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US4959411A
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Preparation of copolymer from carboxy-functionalized polycarbonate and nucleophilic polymer
Assignee: SABIC Global Technologies BV
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Filing: 1988-12-27
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Granted: 1990-09-25
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Expires: 2008-12-27
Abstract
Abstract Carboxy-functionalized polycarbonates are prepared by incorporating a carboxylic acid-substituted phenol, preferably t-butyl p-hydroxybenzoate, as a chainstopper in a polycarbonate-forming reaction. The products are capable of forming copolymers with other polymers such as polyamides and functionalized olefin polymers, by generation of a carboxy group which reacts therewith.
Inventors
- 👤 Ronald J. Gambale
- 👤 Susan J. Hathaway
- 👤 Kathryn L. Longley
- 👤 Timothy J. Ullman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:38
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/024; C08G81/027; C08G64/00; C08G64/02; C08G64/0208; C08G64/0216; C08G64/04; C08G64/06; C08G64/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
A method for forming a copolymer which comprises effecting reaction between an amine-terminated polyamide or epoxy-functionalized olefin polymer and a carboxy-functionalized polycarbonate containing end groups of the formula ##STR10## wherein each R 1 is independently a divalent aliphatic, alicyclic or aromatic radical and A 1 is a carboxylic acid-substituted phenyl group or a functional derivative thereof.
Claim 2
Independent Claim
56 words
A method for forming a copolymer which comprises effecting reaction between an amine-terminated polyamide or epoxy-functionalized olefin polymer and a carboxy-functionalized polycarbonate containing end groups of the formula ##STR10## wherein each R 1 is independently a divalent aliphatic, alicyclic or aromatic radical and A 1 is a carboxylic acid-substituted phenyl group or a functional derivative thereof.
Claim 3
Dependent Claim
16 words
A method according to claim 1 wherein the polycarbonate comprises structural units of the formula ##STR11##
Claim 4
Dependent Claim
21 words
A method according to claim 2 wherein A 1 is a mono- or dicarboxylic acid-substituted phenyl group or functional derivative thereof.
Claim 5
Dependent Claim
23 words
A method according to claim 3 wherein at least about 60% of the total number of R 1 radicals are aromatic hydrocarbon radicals.
Claim 6
Dependent Claim
50 words
A method according to claim 4 wherein each R 1 has the formula --A.sup.2 --Y--A.sup.3 --, (III) wherein each of A 2 and A 3 is a monocyclic divalent aromatic radical and Y is a bridging radical in which one or two atoms separate A 2 from A 3 .
Claim 7
Dependent Claim
16 words
A method according to claim 5 wherein A 1 contains an ester, anhydride or imide group.
Claim 8
Dependent Claim
46 words
A method according to claim 6 wherein A 1 has the formula ##STR12## wherein R 2 is hydrogen, C 1-6 alkyl or phenyl and each X is independently OH, C 1-6 alkoxy or phenoxy or both X radicals taken together are O or N--R 2 .
Claim 9
Dependent Claim
19 words
A method according to claim 7 wherein Y is isopropylidene and A 2 and A 3 are each p-phenylene.
Claim 10
Dependent Claim
28 words
A method according to claim 8 wherein A 1 has formula IV and R 2 is a C 4-6 tertiary alkyl radical containing at least one β-hydrogen atom.
Claim 11
Dependent Claim
22 words
A method according to claim 3 wherein the nucleophilic polymer is a glycidyl methacrylate-grafted copolymer of ethylene, propylene and a non-conjugated diene.
References Cited (Backward Citations)
US4853458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |