Some of the information on this Web page has been provided by external sources. The Government of Canada is not responsible for the accuracy, reliability or currency of the information supplied by external sources. Users wishing to rely upon this information should consult directly with the source of the information. Content provided by external sources is not subject to official languages, privacy and accessibility requirements.
Any discrepancies in the text and image of the Claims and Abstract are due to differing posting times. Text of the Claims and Abstract are posted:
(12) Patent: | (11) CA 2464339 |
---|---|
(54) English Title: | CURABLE CYANATE COMPOSITIONS |
(54) French Title: | COMPOSITIONS DE CYANATE DURCISSABLES |
Status: | Expired and beyond the Period of Reversal |
(51) International Patent Classification (IPC): |
|
---|---|
(72) Inventors : |
|
(73) Owners : |
|
(71) Applicants : |
|
(74) Agent: | BERESKIN & PARR LLP/S.E.N.C.R.L.,S.R.L. |
(74) Associate agent: | |
(45) Issued: | 2010-09-21 |
(86) PCT Filing Date: | 2002-10-18 |
(87) Open to Public Inspection: | 2003-05-01 |
Examination requested: | 2007-07-26 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
---|---|
(86) PCT Filing Number: | PCT/EP2002/011662 |
(87) International Publication Number: | EP2002011662 |
(85) National Entry: | 2004-04-16 |
(30) Application Priority Data: | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Disclosed are hardenable compositions based on bifunctional or polyfunctional
aromatic
cyanates. Said compositions comprise: a) 10 - 100 wt. %, in relation to the
sum of components
(a) and (b), of a bi- or polyfunctional aromatic cyanate or prepolymer
consisting of at least one
bifunctional or polyfunctional aromatic cyanate or a mixture of the
abovementioned cyanates
and/or prepolymers; b) b) 0 - 90 wt %, in relation to the sum of components
(a) and (b), of
monofunctional, bifunctional or polyfunctional epoxy resin; c) 0.5 - 30 wt. %,
in relation to the
sum of components (a) and (b), of monofunctional or polyfunctional aromatic
amine and d)
0 - 5 wt. %, in relation to the sum of components (a) and (b), of a catalyst
from the group consisting
of transitional metal compounds and bortirhalogenides. After hardening, the
inventive
compositions provide duroplastics which have a high glass transition
temperature and which are
especially suitable for use in the production of high-temperature-resistant
molded items for
electrical appliances or the automobile and aviation construction industry.
La présente invention concerne des compositions durcissables à base de cyanates aromatiques bifonctionnels ou polyfonctionnels. Ces compositions comprennent au moins (a) de 10 à 100 % en poids, par rapport à la somme des composants (a) et (b), d'un cyanate aromatique bifonctionnel ou polyfonctionnel ou d'un prépolymère constitué d'au moins un cyanate aromatique bifonctionnel ou polyfonctionnel ou d'un mélange des cyanates et/ou des prépolymères susmentionnés, (b) de 0 à 90 % en poids, par rapport à la somme des composants (a) et (b), d'une résine époxy monofonctionnelle, bifonctionnelle ou polyfonctionnelle, (c) de 0,5 à 30 % en poids, par rapport à la somme des composants (a) et (b), d'une amine aromatique monofonctionnelle ou polyfonctionnelle et (d) de 0 à 5 % en poids, par rapport à la somme des composants (a) et (b), d'un catalyseur choisi dans le groupe formé par des composés à base de métal de transition et des trihalogénures de bore. Les compositions selon cette invention donnent, après durcissement, des plastiques thermodurcissables qui présentent une température de transition vitreuse élevée et qui conviennent notamment à la production de pièces moulées résistantes aux températures élevées, utilisées dans des appareils électroniques ou dans le domaine de la construction automobile et aéronautique.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 2464339 was not found.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Event History , Maintenance Fee and Payment History should be consulted.
Description | Date |
---|---|
Common Representative Appointed | 2019-10-30 |
Common Representative Appointed | 2019-10-30 |
Time Limit for Reversal Expired | 2019-10-18 |
Revocation of Agent Requirements Determined Compliant | 2019-03-25 |
Appointment of Agent Requirements Determined Compliant | 2019-03-25 |
Revocation of Agent Request | 2019-02-27 |
Appointment of Agent Request | 2019-02-27 |
Letter Sent | 2018-10-18 |
Maintenance Request Received | 2016-08-31 |
Maintenance Request Received | 2015-08-11 |
Maintenance Request Received | 2014-09-22 |
Maintenance Request Received | 2013-09-19 |
Grant by Issuance | 2010-09-21 |
Inactive: Cover page published | 2010-09-20 |
Amendment After Allowance (AAA) Received | 2010-07-07 |
Pre-grant | 2010-06-30 |
Inactive: Final fee received | 2010-06-30 |
Letter Sent | 2010-01-06 |
Notice of Allowance is Issued | 2010-01-06 |
Notice of Allowance is Issued | 2010-01-06 |
Inactive: Approved for allowance (AFA) | 2010-01-04 |
Amendment Received - Voluntary Amendment | 2009-10-29 |
Inactive: S.30(2) Rules - Examiner requisition | 2009-05-01 |
Letter Sent | 2007-09-06 |
Request for Examination Received | 2007-07-26 |
Request for Examination Requirements Determined Compliant | 2007-07-26 |
All Requirements for Examination Determined Compliant | 2007-07-26 |
Letter Sent | 2005-01-11 |
Inactive: Single transfer | 2004-11-30 |
Inactive: Courtesy letter - Evidence | 2004-06-15 |
Inactive: Cover page published | 2004-06-15 |
Inactive: First IPC assigned | 2004-06-13 |
Inactive: Notice - National entry - No RFE | 2004-06-11 |
Application Received - PCT | 2004-05-19 |
National Entry Requirements Determined Compliant | 2004-04-16 |
Application Published (Open to Public Inspection) | 2003-05-01 |
There is no abandonment history.
The last payment was received on 2010-08-12
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Patent fees are adjusted on the 1st of January every year. The amounts above are the current amounts if received by December 31 of the current year.
Please refer to the CIPO
Patent Fees
web page to see all current fee amounts.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
---|
LONZA AG |
Past Owners on Record |
---|
ALESSANDRO FALCHETTO |
SAJAL DAS |
ULRICH DAUM |