Note: Descriptions are shown in the official language in which they were submitted.
WO92/07132 PCT/GBi91/01792
~'
:,
SQFT~ G ~ X~
This invention relates to the novel use of
known polymers and prepolymers as softening agents to
improve the handle of both natural and synthetic
;~ fibres.
. Traditionally employed softening agents have
as their basis either fatty acid or reactive siloxane
chemistry. In both cases, the use of such ayents
imparts a degree of hydrophobicity to the treated
fibres. While attempts have been made to overcome
this effect by the incorporation of hydrophil:Lc
~ groups, such as amino, quaternary ammonium and
-~ polyethylene oxide groups, these generally have the
effect of reducing the softness of handle that can be
~ achieved and some hydrophobicity nevertheless remains.
.~ 20 In addition, particularly in the case of fatty amide :.
$ based softening agents, the effects are transitory and
~ tend to be readily removed upon subsequent wet
:~ processing of the treated fibr~s or during domestic
wasbing of the finished product. Conseguently, it has
.~ 2~ been necessary either to re-soften the material by
.~ re-applying a softening agent (which is inefficient
:~ and uneconomic) or to tolerate a reduction in the
~! level of softness following washing of the product.
:~ 9ritish Patent Nos. 1470243 and 1533343
., 30 describe compounds containing aziridine radicals and
their use for reducing the shrinkage and felting of
protein fibres. One of the compounds disclosed is
that sold under the trade name Basolan S~, and which
is marketed as a hydrophilic polymer that is said to
:3 35 achieve a soft hydrophilic finish when applied to
~, synthetic ~ibres.
,`~'~
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W~92/07132 PCT/GB91/01792
; 2 ~ ~3 0 ~ 3 2 2 `
..
The present invention seeks to provids
improved softening agents suitable for use with hoth
natural and synthetic fibres. The polymers and
prepolymers employed for this purpose are the subject
~: 5 of our co-pending European Patent Application No.
9030795l.5.
The present invention relates to the use as
~ a softening agent for natural or synthetic fibres of a :
- compound of any one of ~he following ormulae:-
1 t A ~ m~N (Rl ) n ) r
-~~
:j 15.
! which may be expressed more simply as: ~
:~ ~t N (Rl~ n ~ r '
(II3
~ or
:~ ii) structure involving crosslinking or bridging of
the above groups (I) or ~II): :
[(Rl)nNlEA~z~A~mN(Rl)
!
;1 .
,~ (III) . .
~. 3o which may be expressed more simply as: :~
[ER1)nN~J~N(R1)~
1 35
~. :
, .
WO92/07l32 2 ~ 9 Z~ 3 3 2 PCT/GB91/01792
: - 3
.
or
: iii) a low molecular weight polymeric structure foxmed
from the above groups (I) or (II):
(K)~(B)y~X
(~)
. wherein
Z represents a residue of a polyol, preferably
a di or trivalent polyol;
A represents a polyalkylene oxide residue,
. that is a polyether chain produced by polymerisation
:: of, for example, ethylene, propylene or butyl~ne
: oxides or tetrahydrofuran;
B is the residue created by bi- or
polyfunctional reaction between any polyfunctional
t reactlve group and the parent amine of the title
i compounds (formula (I) where R1 is hydrogen in all
~ cases)~ or is the residue of a reactive amino-acrylic
i polymer (e.g. of the type described in EP-A-0129322)
or a reactive polyamide polymer (e.g. of the type
described in EP-A-0260017A or a Hercosett polymer),
and may be taken, for example, to represent
Z a group
-E-(R3)pN-lD]-N(R3)
l (VI)
:Z
~l a group
., .
N~N - ~
N~1~ ~:
. 35 (VI~)
.,
~Z '.'
''Z ~ ' .... ' '
WO92/07l32 PCT/GB91/01792
2 ~
- a group resulting from the reaction of a bi-
or poiyfunctional species capable of reacting with
amino groups, for example: epihalohydrins, alkyl di-
and polyhalides, di- or polycarboxylic acids or their
; 5 acyl halides and anhydrides, dicyandiamide, urea and
formaldehyde,
- a group derived from low molecular weight
reactive resins such as the Bisphenol A type,
or a group derived fxom reaction of a cationic
polymeric reactive species such as .
.. , I6 ~
~ C~2-b ~C~3r- N~ ~ _ N ~ CH2-l~-C82
where R6 and R7 are selected from C1-C5 alkyl and
C2-C5 hydroxyalkyl radicals, .
l 20 Y is selected from C2-C6alkylene radicals,
::~ 2-hydroxy-1,3-propylene radicals, and the radicals:
i . -.
:l -CH2CH2NHCONHCH2CH2- and ~.
-cH2cH2c~2NHcoNHcH2cH~c~2-
I and q is an integer of from 0 to 20, provided
!I that when q is greater than 2, each of the symbols Y
need not necessarily have the same significance;
D represents a straight or branched chain
I hydrocarbon, polysiloxane or polyalkylene oxids
I residue, and which may also either bear functional
groups or may contain functional groups, such as amino
groups, which may in turn either bear one or more
groups R1 or, where B is polyfunctional rather than
bifunctional, may xepresent a further functional
:, .
~ '`
Z ': '
WO92/07132 PCT/GB91/01792
2 0 9 0 3 3 2
; - 5 -
. .,
reaction point of the group ~ with the rest of the
molecular structure;
E represents a group resulting from the
reaction of a bi- or polyfunctional species capable of
: . 5 reacting with amino groups, for example:
epihalohydrins, alkyl di- and polyhalides,
. dicarboxylic acids or their acyl halides and
:; anhydrides, dicyandiamide, urea and formaldehyde;
J represents a residue derived from a
polyfunctional polyether;
. K represents the monofunctional or
polyfunctional residue derived from partial reaction
of the basic prepolymers in formulae (I~ or (II), i.e.
it represents the shaded area in formul~ (III) as
follows:
. '.
, 20 ~
R1 represents a fibre reactive grouping such
as the residue derived from monofunctional reaction of
~ an epihalohydrin, an alkyl or alkyl aryl polyhalide or
~ 25 a methylol grouping derived from monofunetional
.. 1 reaction of formaldehyde~ or is alkyl, hydroxyalkyl or
hydrogen, with the proviso that at least one group R1
.~ per polyoxyalXyleneamine residue, and preferably at
least one for each nitrogen, retains residual fibre
reactivity;
:? R represents a fibre reactive grouping such
.j 2
as the residue derived from monofunctional reaction of
an epihalohydrin, an alkyl or alkyl axyl polyhalide or
~ is a methylol grouping derived from monofunctional .
4, 35 reaction of formaldehyde, or alkyl, hydroxyalkyl or
hydrogen~ ~;
'':'' . .' ": '
W09~07132 P~T/~91/01792
._
209~332- 6 - -.
R3 represents hydrogen or C1-C4 alkyl or
hydroxyalkyl;
: R~ represents halogen or ~ :
a gro~lp
~ER2)nN~J~N(R2);~
n ~VIII)
. or one of alkylamino, hydroxyalkylamino,
.i~ alkoxy, alkylarylamino or
a group -(R3)pN-lD]-R5
~ or a functional reaction point of the group
:.~ 15 B with the rest of the molecular structure, where B is .
polyfunctional rather than bifunct.ional;
~ ,
R5 represents hydrogen or
:~j a group -N(R2)n or -N(R3)n;
.3 20
.1 m is between 4 and 50; :;
~ n is 2 or 3, with the proviso that, where n is
-~ 3, the nitrogen atom involved also bears a formal
;'! 25 positive charge; .
p is 1 or 2, with the proviso that, where p is
2, the nitrog0n atom involved also bears a formal
~ positive charge;
;i! 30
r equals the functionality of group Z;
~1 .
: ~ t is a number representing the functionality of
~I reaction of the residue B;
l 35
, s is a number between 1 and r~
:~ J
, . :
. , ~
WO92/07132 PCT/GB91/01792
2l~9~332
: - 7 -
: x is between 2 and 30; ancl
{
y is from x to x,
t-1
. with the general proviso that, in any given instance,
i.~ the significance of a particular group z, A, B, R, J
. or K in any given structure shall not be dictated by
the significance of any other such group in the same
~ 10 formula, and further, wherever a formal positive
:.~ charge is present in the structure, then an
appropriate counter anion is taken to be present, for
:'~ example chloride ion.
The term "fibre reactive grvuping" as used
:3 15 herein is to be understood as meaning a group having
residual chemlcal reactivity such that it wlll be
capable of causing a molecule to be bound to the
~ surface of a fibre in such a way as not to ba readily
;~ removable therefrom. Examples include the fibre
reactive dyes in which a variety of reactive halogen
:~ groupings are sited on the molecule and which, during
dyeing, react with hydroxy or amino functlonalities on
the fibre surface to produce a chemical bond. It will
~ be understood that electrical bonding forces, rather
: ~5 than chemical forces, could be involved and that a
"reaction'l as such need not occur. The terminology
. further includes species which will be attracted to a
fibxe surface and bind themselves thereto by means of ~:
.~ cross-linking mechanisms. ~ :
:! 3o The term ~polyfunctional reactive group" as .
~ . used herein is to be understood as meaning a group
;~ which is capable of reacting with the amino
~ functional~ty of compounds of formula I or II. The
i reactivity of group B needs to be complimentary to
i 35 that of group R1 in those compounds.
;~ It will be understood that the polymers and
l .
WO92/07132 PCT/~GB~1/01792
'J'f~ 3~
8 --
prepolymers may be derlved from mixtures of one or more
polyoxyalkyleneamines and that these may be joined by
bridging groups. The bridging groups serve to link the
polyoxyalkyleneamines and some examples of suitable
groups were mentioned above. The bridging groups
themselves could, of course, bear rsactive species
capable of reacting with fibres. It will also be
' appreciated that the bridging group B could be
incorporated into the molecular structure, whilst the
10 prepolymer is being applied to the fibre, as a separate
reactive crosslinking agent.
The present invention further provides a
method for the treatment of natural or synthetic
, fibres so as to impart a softer handle and which
15 comprises treating the fibres with a polymer or
prepolymer compound o the aforementioned type.
~ The softening agsnts and method of this
f~ invention may be applied to all types of natural and
synthetic fibres, including nylon and acrylic. They
f 20 are particularly suited to use with wool and cotton,
-i including 100% cotton terry loop towelling, and to
, cotton or wool blends with synthetic fibres.
¦ The æoftening agents of the invention may b~
AI presented for use in solution in a non aqueous
'' 25 sol~ent, such 2S perchloroethylene. More preferably,
f however, they are in the form of an aqueous solution,
f optionally with the addition of suitable dispersing
agents to reduce the viscosity of the solution. The
l total amount of polymer solids applied to the fibres is
j 3o generally fxom 0.005 to 10.0% by weight, most
preferably from 0.05 to 2.0%.
~, The method of this invention can be
performed as either a batch or continuous process
j,' using conventional equipment. For sxample, the
.f 35 softeninfg agent may be applied aqueously by exhaustion
I on to the goods in a traditional long bath
. ' . .
.i .
.~ '~ . .
.~. , .
WO92/07132 2 O 9 a 3 3 2 PCT/GB91/01792
: _ 9 _
method using suitable machinery, or may be padded onto
fabric continuously or appli.ed in foam or by suction-
slot techniques. Irs addition, the agent may be
applied to piece goods or fabr.ic from a solvent such
as perchloroethylene in suitable machinery.
If desired, the softening agents may be
applied in combination with other resins, further
softening agents, emulsifiers, pigments, binders
fluorescent whitening agents or other materials to
~0 confer additional properties or benefits to the
~ material.
-~ It has surprisingly and advantageously been
found that the use of polymers and prepolymers of this
type as softening agents imparts rather different, and
improved, properties to the treated fibres compared
'l with conventional softeners. Not only is a very soft
:. handle achieved, but the finish is also extremely
`~ hydrophilic and substantially more durable to
subsequent washi~g or wet processing. The durable
20 softness thus imparted results also in dimensional ~-
retention and elasticity in knit cotton structures
i without recourse to conventional cotton resin finishes.
As will be appreciated, this results in considerable
benefits for both manufacturers and users of, for ~-~
i 25 example, cotton towelling, bathrobes, underwear and
; leisurewear.
A further advantage of the softening agents
i of this invention arises from their extreme water
i dispersibility. Conventionally employed softening
agents are emulsions which create problems of shear
instability in such high shear situations as jet
dyeing machiness, suction slot evacuators, and
filtration problems when treating yarn in package
dyeing mac~ines, when filtration effects can cause
i 35 difficulties. These problems are reduced, or totally ~:
;s avoided, with the present softening agents.
:,
. .,;- :
wo g~/07132 ~ 3 ~ 2 PCT/GB91tOl792
A still further surprising aspect of the
invention is that these softening agents, when used in
combination with one or more conventional softening
` agents, can result in finishes with considerably
superior handle and performance than may be expected.
Wash durability, handle and fuming during fabric heat
setting, for example, are much improved. In some cases
the improvement may be up to or above the levels
achieved with either material alone, indicating a
synergistic action. Examples of suitable
~ "conventional" fabric softening agents include:
; oxidised polyethylene wax emulsions; silicone
emulsions, especially emulsions of reactive
organofunctional silicones, and more especially
' 15 amonosilicones; fatty amide emulsions; and
quaternised fatty amine emulsions.
, The present invention will now be
; illustrated by the following Examples.
l .
~ 20
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. ,,~ '~
, ~ '. :.
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- 35
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WO 92t07132 pcr/Gs9l/ol792
21~90332
Examplè 1
solution was prepared contalnlng 881 g of a blsaminopropyl
` polytetrahydrof uran of ~tructur~
~2N ~2 . C~2 . C112 ~ O ( CH~ ) 4 ~ o CH2 0 Cl~2 . ~2 ~H2
(where ~ 1~ approxirnat~ly 28 ~rerage~ ln ~418 g of a mlxtur~ o~
70~ l~opropanol ln wa~erO To thie ~olutic~n w~ a~ded 155.3g o~
eplchloro~ ydrin wlth efflcient ~tirring at roona cem~ratur~ ln ~
reaction flask fitted wlth a water cooled xeflux conden3erO The
mixtur4 wa-~ then haaS~d to boillng and reflux a~slnt~in~ for
approximatsly 4 hours or untll a cl~ar or ~llghtly turbld
homogeneou~ solutlon i~ produce~l wh9n 5 cm3 o~ the r~act:ion mix
i9 mlxed with 30 cm3 water. The reac'clon ~nixture wa~ then
allowed to cool ~nd u~ed ln subsequen~ experiment~.
~^ Example 2
ttarlous textlle sample3 were treated wlth the product of example
.~ 1 a~ follow~: Bcoured good~ Were placea in ~ blank bZLt~ ~t a
ll~uo~ ratlo of ~0:1 and tha bath ~et to pR 6,5 lto 't.0 ~t 25~'C,
~he ~qui~ed amount o~ so~ten~r wa~ adde~ to t!he, bath ln
pr~llluted ~orso, 1:~,0 wlth wat~r~ The bath wa~ d to 3SC
and th~n allowe,d tc~ exhau~t, a~ indlcat~l by tho dl~appearance
o~ ths ~l~ght turbidlty fr~, th~ bath, whlch u~3ually took
between 15 ~nd 30 ,r~l~ute~,. Th~ goot913 were then re~ao~ed,
3 hydroaxtracted ~nd ~Srle~d ln a tu~ ~er at betwe,eTl 70 an~l
'~ 1 C10C,.
1, lhe re~ult~ of th~ te3t~ are pre~erted ln ~a~l~ to
,
ExamE2le 3
(a~ Formulatlon
A formulation~ wa~ produced oontaining 20 part3 pro~luct from
E~xarnple 1, 20 parta nonyl phenol 8 moIe et!loxylate and 1 0 part~
nonyl phenol fi mole ethoxylate .
~b) ~~lcation 1
A Bowe P421 dry cleanlng machin~ wa3 loaids~ wlth 30 kg of 60~
r~ercerlse~ Cotton 40~ nylon predyed snen~i ~ocks~ Then 130 litre~ : .
of ~erchlorethylena wa~ char~e~ to the machlne ~nd the goods
tumble~ ln ~olv~nt for 1 m~nll~e to wet out. 1.95 kS~ o~ ~che ~ :
abov~3 formulatl~n wa~i then z~dd~d to the machln~ vla the bu~ton
~raD and the goods tumbla~l for 5 ml nute3, then the ~olverlt
d~alrled to the i'C~ d. centrifugQd to 100~ expre~isie~n, thien
tu~ ried.
A~3llcation 2
~he a~e was x~ated5 but u31ng 1.~13 kg of the aboYe
mlxture ~na 1~,9~ )cg wat~r placed ln the button trap.
, :
3, -
:-,1 .
..
.,
WO~2/07132 ~al~33'~ PCr/1;~91/01792
..
- l2
(d ) Re~ult3
Example Wett1 ng t~ me~ Handle ~an~le ater 7xHLCC5
3b 8 siec very ~o~t ~oft
3c 1 ~eic ~ery ~oft 00f~
In addi~lon to thQ a~ov~ ? the change~ lrn later~ r~chlng o$
the sock a~t~r wa~hlng were ~a~asured ~ d compared with an
untreated ~oc~.
" .
~i ~ercent ch~n~e in later2lL ~tr-~tch
i
-, . oot RnXl~s leg welt
Ex~mpl~ 3c-';2 o 8 -2 ~ 2 ~1 . 3 -1 . 3
Untreated -8 ~ 9 -8 . 5 -7 . 5 -2 . 3
Thl8 further indilcate~ r~tentlorl of ~oft~:nes~ ancl ~pringness o~
th~ knitted structurs elft-r washing,
'`,1
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"'~, .''"
q '
., .
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I~ .
.,.
.
~ ~ ,
'.,~
,~ '
''~ ' .
~,1 . ~ ' ' ' ' , . ,. . ' ' ; ~ . . ' ' i
WO 9~/07132 2 D 9 D 3 3 2 PC~r/GB91/01792
- l3
I~
.
~rticle A~nt o Wettir~ dle Washiny ~andle
ated Pro~l~t of t~t ~ t ~ after
~? Was~lng
(o~
'~00~ ttc~n
ten:y lo~ 1073~ instantax~ ~ery sc~t 7 ~a~s very scd~t
y to }~XS
60~ tton 3,46% ~ se~nd~s ~ry sot 10 ~9~ y saEt
40~ Dylcn ~ ~
inta~sla in73S~S 3 ~ 3 soft ~oft
~ ,
~
- -- ~
60~ ~n
4~ nyl~ 3.4~ not ~ sct 10 wa~ vesy saft
p
J 1~0% C~
1.73P~ 3 ~ ~lary s~t î~ y ~Et
~iC 3.46Dd 5 8~0~ ~ ~ ~5~re~y ~~
. j
.
* time WcE~ 0.1 Q3 d~p ssf ~aater to sink ~to the fa~ric
** in a Wascator ~ 7 acoor~ o ~ ering Oonsultatl~ ~uncil
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W092/07132 2 ~ ~ o 3 3 2 PCT/GBgl/0l792
,,~
- 14 -
.
Example 4
The product of Example 1 can bs prepared as an aqueous ~olution
by distilling out the i~opropanol and replacin~ it with water,
thereby miniml~in~ fire ha~ard. 79~ part:~ of the product of
~xample 1 ~ distllled at atmospheric pressure until 391 parts
of an isopropanol: water ~lstillate Ig collected~ Then, 7~0
parts of water ~nd ~0 part~ monoethyl~ne glycol i3 added to the
fla~k and stirred. The rssulting product contains about 20~ w/w
active ~olid~ and only 4~5~ lsopropanol,
The product wa~ applied to wool and acryllc ~ocks by an
~xhaustion method as in Example 2. Excellent handle and good
durablllty was a~hieved.
,
.
.
, :
;~
~xam~l~ 5
The s~ftenlng agent can b~ m~xed with con~entional fatty
quaternary ammonium-type soften2rs ~o gi~e a product which has
, excellent handle, good durability and superlor hydrophlllc~ty to
;~ conventlonal softeners. Such a product i~ particularly u~eful
1 for softening cotton/nylon ~ocka.
~, a) Formulatlon
~ 797 parts o~ the product .... ~ ~xample t were dl~tilled at
i atmospharic pressure untll 391 parts of an isopropanol: water
~ distillate were collected. 391 parts o~ water were added to
:, th1s, stlrred and this product blended with 341 parts of a
, commerclal fatty ~uaternary aTnmonlum softener (PPT ~td).
:~! b~ APpllcatlon
The perfor~ance of th~s softener wa~ compared against
. conventional types on cotton/nylon ~ocks~ The Gofteners were
applled as descr~ed in ~xample 2. ~he resu~ts are presented in
~ablo Z.
~` ' .
' `-1
. ,~ . .
,~
., .
Wog~/07132 2 0 9 Q 3 3 2 PCT/GB9l/01792
- 15 -
.
Table 2 Softener~- appl~ed to cotton/nylon ~oak~
Handle
APplicatlon ~ettlnq ~afore wa~h ~ x MSB III
2~ Example 5 13 sec 3
2~ Ceranin~ pNpl1~0 sec 4 4
Permavel R235 ~ec 1 3
~ PermaYel ~ 270 sec 2 2
Scour only 60 seo 5 5
1. Fatty amide ~obætener, Sando~ Product~ Ltd.
2~ Durable ~illco~ne softener~, PPT Ltd, prepared a~ described
ln Europe~ ~a~nt Applloatlon No. 89312306.7.
. ~ ',
1 . - . ~
. ;~
e 6
~:. A 3t~bl~ product can be formulated by t~X.~.ng 1~0 parts of the
: product o~ ~xa~pile 4 and blending thls w~th 30 parts of a
sillcone emulsl ~. (eg Finish VP1445E, Wack~r Chamlcal~ Ltd).
Thl8 product ~a~s co~pared for handl~ on knltted lambswool
. I ~watches ~gainst a sillcone softe~er ~Wacker VP1445E). The
o~teners w~re ap~plie~ ~y exhaustlon, ~9 ~e~cribQd ~n Example 2
u81ng 1-2S produc~ on we~ght o~ wool. The ne~ ~oftener gave a
supsr-soft handl~, le~s ~lippy and more natural than wlth the
illcone. The hy~rophillclty was al~o noticeably uperlor.
. . :~ .
:! :
, , ~
... l
: :1
. ~ .
, :1
::
WO92/07132 pcr/GB9l/ol792
~ 209~3~2 - l6 - ~
.,
!
.
Ex~mple 7
a) To a solution of 254g bisaminopropyl polytetrahydrofuran (of
the ~tructure ln Example 1~ ln 700g t~f a mlxture of 70%
isopropanol in water wa~ added 39g DER732 (Dow ChemLcal Cv.) and
7.8g eplchlorohydrin. ~he mixture was refluxed Eor 4 hour~ or
until a clear or ~lightly turbid ~olution lwa~ obtalned when Scm3
~, of the product was added to 30cm3 of water~
b) A solutlon contalning :238g bisaminopropyl
polytetrahydrofuran ~of the ~tructure irl ~xa~ple 1~ in 712g
~sopropanol was preparedO To this was added 27g DER732 (Dow
Chemlcal CoO3, 16.6g Tego OF3010 (Th. Goldschmldt Ltd! and 7.3g
epichlorohydr~n. The ~ixture was refluxed for 4 hour3 or until
a homogeneous, but ~urbld, solution wa~ obtalned wh~n 5cm3 of
the product was added ~o 30cm3 o~ water.
:,
.
~ ~ .
,
.
~ Exam~le 8
i The products o~ Example 4 and Example~ 7a and 7b were applied to
a varlsty of knitted cotton abr~c~ (dou~le ~ersey, slngle
l ~er~y, loopback interlock and plque). Tha softener~ were
applled by a) padding: the ~o~teners were applied wet-on-wet to
th~ ~abrlcs from a ~olution contalnlng 25g/1 produc~, pH7, 2SC
~, at 100~ plc~-up and b~ exhaustlon: as given ln Exampl~ ; uslng
2.5% o.w.g. pr~duct. ~he fabric~ were stenter dried and
comm~rcla~ly finlshed then col~parsd for handle and durabillty to
washing again~t a ~tandard ~atty amide soft~ner. A co-applied
~ mlxt~re 4~ th~ product of Example 4 and a polyethylene wax
`I ~mu}3ion ~Brad~yn ~, ~ick~on & W~lch ~td) was al~o ~valuated.
~he relatl~e handl~ and durabll~ty asye~sMent~ wer~ a~ follow~.
jlj In gan~ralt the handle be~or~ and after wa~h was superlor when
3 soften~r i wexe applled by a pad~ng teehnlque compared with
1 exha~tlo~. Before washlng the softener~ were comparable ln
i ~oftnQ~3 to the ~tandard silicone sot~ner ~dunlne S~, ICI
Colours ~ Fine Chemicals); after wash, ~3 x H~CC4), the ~tandard
~oft~ner could b~ re~dlly dis~ln~u~hed by ~t~ har~her handl2.
i The ~xample 4/polyethylene wax mixture perform~d particularly
~ well on all fabrlc types, giv~ng a cool, ~oft handle and
:j exoellent ~rape.
W092/07132 PCT/GB91/01792
2~0332
- 17 -
Exam~le 9
The ~oftenln~ agents of the lnvention are partlcularly ~uited to
u~e on towels and to~elling fabr~c a~ a consequence of the~r
~uperlor hydrophlliclty~ The product3 were applled by a wet-on-
wet continuous pad treatment at 80% plck-up, from ~olutlon
containlng 20-40g/l softener to Egyptian comb~d cotton
towelllng. The fabrics were tumble t~l~d and finl~hed a~
towel~. A war~, soft handle is achlev~d with excellent
rewettability, as compared with sillcone- and fatty amlde-type
softeners, Ths new ~oftener~ lmpart a f~ller, ~ors luxurious
feel to towelling and a ~ ier handle. ~he durability of the ~ .
softeners wa~ assessed by ~ub~ectlng the towels to seven
:i domestlc wa~he~, wlthout addltional fabrlc condltioner and l~ne
dried, The towel~ txeated w~th the new ~oftener~ retain thelr
origlnal appearancr,, wlth ~ full, ~oft handle.
1 :
ii
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:1 .
Example 10
i The product of ~xample 4 was co~pared ~or yellowing at hlgh
' te~peratures agaln~t standard silicone- and fatty amlde-type
:' ~o~tener~, The products were applied to 50/S0 polyesterlcotton
I by pa~din~ ~rom solutions containlng 1 g/l wettlng agent
l ~ullwet PPT ~td~ and 10-40 g~l so~tener. The ~abrlcs were
padded to 100~ plck-up ~hen dried~ Yellowlng of th~ fabrlcs wa~
a~se~ed ~y heating th~ fabr~c~ on an electrically-heated press
for up to 3 mi~ute~. .
', Temperature Co~ment~
., 180C Llttle diff~rencs bet~een products
:~ 200C ~xampl~ 4 ~howed no yellowLng at 1~2,3 min~
i at all level~. Other pro~uct~ yellowed
lightly,
~ 220C 511ght yellowln~ of ~xample 4. Oth~r
~ product~ w~re mark0dly yellowed.
~ . ~
i ,~
: l .
~.1
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