Canadian Patents Database / Patent 2845415 Summary

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(12) Patent: (11) CA 2845415
(54) English Title: SOLVENT FORMULATIONS COMPRISING AN ACETIC ACID ALKYL ESTER AND A CARBONATE ESTER, AND OPTIONALLY A BENZENE-CONTAINING COMPOUND
(54) French Title: FORMULES DE SOLVANT COMPORTANT UN ESTER ALKYLE D'ACIDE ACETIQUE ET UN ESTER CARBONATE ET, FACULTATIVEMENT, UN COMPOSE CONTENANT DU BENZENE
(51) International Patent Classification (IPC):
  • B01F 1/00 (2006.01)
  • A61K 8/33 (2006.01)
  • A61K 8/37 (2006.01)
  • A61Q 3/04 (2006.01)
  • C08J 3/09 (2006.01)
  • C11D 7/50 (2006.01)
(72) Inventors (Country):
  • PASIN, DAVID ANTHONY (Canada)
  • LOPEZ-ARIAS, DIEGO (Canada)
(73) Owners (Country):
  • TBF ENVIRONMENTAL TECHNOLOGY INC. (Canada)
(71) Applicants (Country):
  • TBF ENVIRONMENTAL TECHNOLOGY INC. (Canada)
(74) Agent: CHATTERJEE, ALAKANANDA
(45) Issued: 2016-01-26
(22) Filed Date: 2014-03-07
(41) Open to Public Inspection: 2014-05-21
Examination requested: 2014-03-07
(30) Availability of licence: N/A
(30) Language of filing: English

(30) Application Priority Data:
Application No. Country Date
61/775,339 United States of America 2013-03-08
14/172,578 United States of America 2014-02-04

English Abstract

The present disclosure provides, in part, a solvent composition including an an acetic acid alkyl (C1-C4) ester (e.g., methyl acetate (MA), ethyl acetate (EA), or tert-butyl acetate (TBAc)) and a carbonate ester (e.g., dimethyl carbonate, or propylene carbonate), and optionally, a benzene-containing compound.


French Abstract

La présente invention décrit, dune part, une composition de solvants, y compris un ester alkyle dacide acétique (C1-C4) (p. ex., du méthylacétate [MA], de lacétate déthyle [EA] ou de lacétate tert-butyle [TBAc]) et un ester de carbonate (p. ex., du carbonate déthane ou du carbonate de propylène) et, optionnellement, un composé contenant du benzène.


Note: Claims are shown in the official language in which they were submitted.

WHAT IS CLAIMED IS:
1. A solvent composition comprising:
(a) an acetate ester in an amount between about 40% v/v and about 90% v/v,
wherein the acetate ester is an acetic acid alkyl (C1-C4) ester;
(b) a carbonate ester in an amount between about 5% v/v and about 55% v/v;
and
(c) a benzene-containing compound in an amount between about 5% v/v and
about 15%
v/v.
2. The solvent composition of claim 1 wherein:
(a) the acetate ester is present in an amount between about 65% v/v and
about 75%
v/v;
(b) the carbonate ester is present in an amount between about 10% v/v and
about
30% v/v; and
(c) the benzene-containing compound is present in an amount between about
5%
v/v and about 10% v/v.
3. The solvent composition of claim 1 or 2 wherein the acetate ester is
methyl acetate
(MA) or tert-butyl acetate (TBAc).
4. The solvent composition of any one of claims 1 to 3 wherein the
carbonate ester is
dimethyl carbonate (DMC) or propylene carbonate (PC).
5. The solvent composition of any one of claims 1 to 4 wherein the benzene-
containing
compound is benzyl alcohol (BA).
27

6. The solvent composition of claim 1, comprising:
(a) the acetate ester in an amount between about 65% v/v and about 80% v/v,

wherein the acetate ester is methyl acetate (MA);
(b) the carbonate ester in an amount between about 15% v/v and about 25%
v/v,
wherein the carbonate ester is dimethyl carbonate (DMC); and
(c) the benzene-containing compound in an amount between about 5% v/v and
10%
v/v, wherein the benzene-containing compound is benzyl alcohol (BA).
7. The solvent composition of claim 6 consisting essentially of:
(a) MA in an amount of about 72% v/v;
(b) DMC in an amount of about 20% v/v; and
(c) BA in an amount of about 8% v/v.
8. The solvent composition of claim 6 consisting of:
(a) MA in an amount of about 72% v/v;
(b) DMC in an amount of about 20% v/v; and
(c) BA in an amount of about 8% v/v.
9. The solvent composition of any one of claims 6 to 8, wherein the
evaporation rate of the
solvent composition is about 3.62.
10. The solvent composition of claim 1, comprising:
(a) the acetate ester in an amount between about 65% v/v and about 80% v/v,

wherein the acetate ester is tert-butyl acetate (TBAc);
(b) the carbonate ester in an amount between about 15% v/v and about 25%
v/v,
wherein the carbonate ester is dimethyl carbonate (DMC); and
(c) the benzene-containing compound in an amount between about 5% v/v and
10%
v/v, wherein the benzene-containing compound is benzyl alcohol (BA).
28

11. The solvent composition of claim 1 consisting essentially of:
(a) the acetate ester in an amount of about 40% v/v, wherein the acetate
ester is tert-
butyl acetate (TBAc);
(b) the carbonate ester in an amount of about 52% v/v, wherein the
carbonate ester
is dimethyl carbonate (DMC); and
(c) the benzene-containing compound in an amount of about 8% v/v, wherein
the
benzene-containing compound is benzyl alcohol (BA).
12. A solvent composition comprising:
(a) an acetate ester in an amount between about 65% v/v and about 90% v/v,
wherein the acetate ester is an acetic acid alkyl (C1-C4) ester and is VOC-
exempt; and
(b) a carbonate ester in an amount between about 10% v/v and about 35% v/v.
13. The solvent composition of claim 12, wherein the acetate ester is
methyl acetate (MA)
and the carbonate ester is dimethyl carbonate (DMC).
14. The solvent composition of claim 13 consisting essentially of:
(a) MA in an amount of about 75% v/v; and
(b) DMC in an amount of about 25% v/v.
15. The solvent composition of claim 13 consisting of:
(a) MA in an amount of about 75% v/v; and
(b) DMC in an amount of about 25% v/v.
16. The solvent composition of claim 12, wherein the acetate ester is
methyl acetate (MA);
and the carbonate ester is propylene carbonate (PC).
17. The solvent composition of claim 16, consisting essentially of:
(a) MA in an amount of about 70% v/v; and
(b) PC in an amount of about 30% v/v.
29

18. The solvent composition of claim 12, wherein the acetate ester is tert-
butyl acetate
(TBAc) and the carbonate ester is propylene carbonate (PC).
19. The solvent composition of claim 18 consisting essentially of:
(a) TBAc in an amount of about 65% v/v; and
(b) PC in an amount of about 35% v/v.
20. The solvent composition of claim 18 consisting essentially of:
(a) TBAc in an amount of about 75% v/v and
(b) PC in an amount of about 25% v/v.
21. The solvent composition of any one of claims 1 to 20, wherein the
solvent composition
contains less than 0.02 wt% water or less than 550 ppm water.
22. A kit comprising the solvent composition as claimed in any one of
claims 1 to 21
together with instructions for use as a methyl ethyl ketone replacement,
acetone replacement, or
both.
23. The solvent composition of any one of claims 1 to 21, wherein the
solvent composition
is for use as a methyl ethyl ketone replacement, acetone replacement, or both.
24. The solvent composition of any one of claims 6 to 9 for use in paints,
varnish, fiberglass
and gelcoat manufacturing, paint and varnish removers, coatings, inks,
adhesives, hard surface
cleaners, household dyes, tints, insecticides, laundry starches, lubricating
greases and oils,
automotive chemicals, markers, nail polish and polish remover, shoe polish,
undercoats,
waterproofing compounds, particleboard, surface preparation, general and heavy
duty
degreasing, laboratory and equipment wipe solvent, general purpose surface
wipe cleaner, paint
gun and paint line cleaner, or a combination thereof

25. The solvent composition of claim 7 or 8 for use in dissolution and
processing of acrylic
polymers, the production of resins, formulation or removal of nail polish,
fiberglass
manufacturing, gelcoat manufacturing, or waterproofing compounds.
26. The solvent composition of claim 25 wherein the resins are acrylic
resins, urethane
resins, alkyd resins, phenolic resins, polyaspartic urethane resins, epoxy
resins, saturated
polyester resins or unsaturated polyester resins.
27. The solvent composition of claim 25 wherein the nail polish is a
nitrocellulose-based
nail polish, methacrylated monomer-based nail polish, oligonucleotide
("ligomer")-based nail
polish, a UV cure nail polish or a LED cure nail polish.
28. The solvent composition of claim 14 or 15 for use in cleaning wax,
cleaning paint,
cleaning varnish, cleaning coatings, removing wax, removing paint, removing
varnish,
removing coatings, cleaning fiberglass, cleaning gelcoat, cleaning inks,
cleaning markers,
removing inks, removing markers, cleaning dyes, removing dyes, cleaning excess
oils, cleaning
grease, cleaning nail polish, cleaning shoe polish, cleaning brakes, cleaning
contacts, cleaning
adhesives, removing adhesives, removing paint formulations, cleaning
adhesives, cleaning
paint formulations, ink formulations, marker formulations, cleaning inks,
cleaning markers,
lubricating greases, lubricating oils, automotive chemicals, nail polish, nail
polish remover,
precision cleaning applications, surface preparation, cleaning hard surfaces,
laboratory wipe
solvents, equipment wipe solvents, aerospace cleaning applications, general
cleaning, general
degreasing, or a combination thereof.
31

29. A method of making a methyl ethyl ketone replacement composition, the
method
comprising:
(i) providing:
(a) an acetate ester in an amount between about 40% v/v and about 90% v/v,
wherein the acetate ester is an acetic acid alkyl (C1-C4) ester;
(b) a carbonate ester in an amount between about 5% v/v and about 55% v/v;
and
(c) a benzene-containing compound in an amount between about 5% v/v and
about
15% v/v; and
(ii) combining the acetate ester, carbonate ester and benzene-containing
compound to form
a homogeneous blend.
30. The method of claim 29 wherein the acetate ester is methyl acetate in
an amount of
about 72% v/v, the carbonate ester is dimethyl carbonate in an amount of about
20% v/v; and
the benzene-containing compound is benzyl alcohol in an amount of about 8%
v/v.
31. A method of making an acetone replacement composition, the method
comprising:
providing:
(a) an acetate ester in an amount between about 65% v/v and about 90% v/v,
wherein the acetate ester is an acetic acid alkyl (C1-C4) ester and is VOC-
exempt; and
(b) a carbonate ester in an amount between about 10% v/v and about 35% v/v
and
(ii) combining the acetate ester and carbonate ester to form a homogeneous
blend.
32. The method of claim 31 wherein the acetate ester is methyl acetate (MA)
in an amount
of about 75% v/v and the carbonate ester is dimethyl carbonate (DMC) in an
amount of about
25% v/v.
32


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Admin Status

Title Date
(22) Filed 2014-03-07
Examination Requested 2014-03-07
(41) Open to Public Inspection 2014-05-21
(45) Issued 2016-01-26

Maintenance Fee

Description Date Amount
Last Payment 2017-01-06 $100.00
Next Payment if small entity fee 2018-03-07 $50.00
Next Payment if standard fee 2018-03-07 $100.00

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Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Request for Examination $800.00 2014-03-07
Registration of Documents $100.00 2014-03-07
Registration of Documents $100.00 2014-03-07
Filing $400.00 2014-03-07
Final $300.00 2015-11-17
Maintenance Fee - Application - New Act 2 2016-03-07 $100.00 2015-11-17
Maintenance Fee - Patent - New Act 3 2017-03-07 $100.00 2017-01-06

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