US5068284A
Expired / Lapsed
US
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Blocked amine terminated polycarbonates and products obtained therefrom
Assignee: General Electric Co
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Filing: 1990-08-03
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Granted: 1991-11-26
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Expires: 2010-08-03
Abstract
Abstract Blocked amine terminated polycarbonate is provided which can be used to form anhydride terminated polycarbonates, or copolymers with various functionalized organic polymers. A blocked amino phenol, such as N-t-butoxycarbonyl tyramine can be used as a chain stopper under interfacial conditions to chain stop polycarbonate. The t-butoxycarbonyl can be removed by melt processing the polycarbonate to yield an amine end group which can be reacted with other polymers or with an organic dianhydride to form anhydride terminated polycarbonate. The anhydride terminated polycarbonates can be used to form copolymers with amine terminated polyamides.
Inventors
- 👤 Timothy J. Ullman
- 👤 Ronald J. Gambale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:13
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/04; C08G64/06; C08G64/14; C08G64/08; C08G64/12; C08G64/18; C08G81/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
25 words
A polycarbonate having terminal groups of the formula, ##STR5## where R is a C.sub.(2-13) divalent organo radical, and R 1 is C.sub.(3-8) branched alkyl radical.
Claim 2
Dependent Claim
25 words
A polycarbonate having terminal groups of the formula, ##STR5## where R is a C.sub.(2-13) divalent organo radical, and R 1 is C.sub.(3-8) branched alkyl radical.
Claim 3
Dependent Claim
19 words
A polycarbonate in accordance with claim 1, having terminal groups where R is phenylene and R 1 is tert-butyl.
Claim 4
Dependent Claim
9 words
A bisphenol A polycarbonate in accordance with claim 1.
Claim 5
Dependent Claim
27 words
A polycarbonate having terminal groups of the formula, ##STR6## where R is a C.sub.(2-13) divalent organo radical and R 4 is a tetravalent C.sub.(2-30) aromatic organic radical.
Claim 6
Dependent Claim
27 words
A polycarbonate having terminal groups of the formula, ##STR6## where R is a C.sub.(2-13) divalent organo radical and R 4 is a tetravalent C.sub.(2-30) aromatic organic radical.
Claim 7
Dependent Claim
20 words
A polycarbonate in accordance with claim 4, where R is a C.sub.(2-13) divalent organo radical and R 4 is ##STR7##
Claim 8
Dependent Claim
85 words
A polycarbonate reaction product comprising the polymeric or copolymeric extrudate obtained from contact under melt extrusion conditions between (A) polycarbonate having terminal groups of the formula, ##STR8## and organic polymer functionalized with epoxy, anhydride or oxazoline groups, or (B) polycarbonate having terminal groups of the formula, ##STR9## and an amine functionalized organic or organic-silicon, polymer, where R is where R is a C.sub.(2-13) divalent organo radical, R 1 is a C.sub.(3-8) branched aklyl radical and R 4 is a tetra valent C.sub.(6-30) aromatic organic radical.
Claim 9
Dependent Claim
85 words
A polycarbonate reaction product comprising the polymeric or copolymeric extrudate obtained from contact under melt extrusion conditions between (A) polycarbonate having terminal groups of the formula, ##STR8## and organic polymer functionalized with epoxy, anhydride or oxazoline groups, or (B) polycarbonate having terminal groups of the formula, ##STR9## and an amine functionalized organic or organic-silicon, polymer, where R is where R is a C.sub.(2-13) divalent organo radical, R 1 is a C.sub.(3-8) branched aklyl radical and R 4 is a tetra valent C.sub.(6-30) aromatic organic radical.
Claim 10
Dependent Claim
23 words
A polycarbonate reaction product in accordance with claim 6, where the functionalized organic polymer of (A) is a trimellitic anhydride functionalized polyphenylene ether.
Claim 11
Dependent Claim
20 words
A polycarbonate reaction product in accordance with claim 6, where the functionalized, organic polymer is a maleic anhydride functionalized polypropylene.
Claim 12
Dependent Claim
20 words
A polycarbonate reaction product in accordance with claim 6, where the functionalized organic polymer is a maleic anhydride functionalized polyethylene.
Claim 13
Dependent Claim
22 words
A polycarbonate reaction product in accordance with claim 6, where the functionalized organic polymer of (A) is maleic anhydride functionalized EPDM rubber.
Claim 14
Dependent Claim
21 words
A polycarbonate reaction product in accordance with claim 6, where the functionalized organic polymer of (A) is an oxazoline functionalized polystyrene.
Claim 15
Dependent Claim
19 words
A polycarbonate reaction product in accordance with claim 6, where the polycarbonate of (B) has terminal pyromellitic dianhydride units.
Claim 16
Dependent Claim
19 words
A polycarbonate reaction product in accordance with claim 6, where the polycarbonate of (B) is contacted with a polyamide.
References Cited (Backward Citations)
US3085992A
Cited
US3399172A
Cited
US4111910A
Cited
US4556704A
Cited
US4792477A
Cited
US4732934A
Cited
US4959411A
Cited
US4940771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |