US4469852A
Expired / Lapsed
US
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Composition comprising graft polycarbonates
Assignee: General Electric Co
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Filing: 1983-06-15
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Granted: 1984-09-04
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Expires: 2003-06-15
Abstract
Abstract This invention relates to novel thermoplastic compositions that are based on an aromatic polycarbonate in admixture with impact modifying quantities of a modified aromatic polycarbonate to which are grafted polymers of a long chain alkenyl compound.
Inventors
- 👤 John A. Tyrell
- 👤 Omar M. Boutni
- 👤 Gary L. Freimiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:41
CPC Classifications
C; C08; C08L; C08L69/00; C08F; C08F283/00; C08F283/02; C08L69/005
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
152 words
A composition which comprises an aromatic polycarbonate in admixture with an impact improving effective amount of a resin that has units of the formulas: wherein R 1 , R 2 , R 3 and R 4 are the same or different and are hydrogen or (lower) alkyl or phenyl; R 5 and R 6 are (lower) alkenyl; Ph is phenyl; n is at least 30 and m is at least 1; r and s are 0, 1, 2, or 3 provided that r and s are not zero at the same time; Z is carbon and Z taken together with R 1 and R 2 or Z taken together with R 3 and R 4 are S, ##STR3## to which is grafted a polymer of a compound of the formula: ##STR4## wherein R 7 is hydrogen, methyl or ethyl and R 8 is alkyl of from 3 to about 20 carbon atoms.
Claim 2
Dependent Claim
152 words
A composition which comprises an aromatic polycarbonate in admixture with an impact improving effective amount of a resin that has units of the formulas: wherein R 1 , R 2 , R 3 and R 4 are the same or different and are hydrogen or (lower) alkyl or phenyl; R 5 and R 6 are (lower) alkenyl; Ph is phenyl; n is at least 30 and m is at least 1; r and s are 0, 1, 2, or 3 provided that r and s are not zero at the same time; Z is carbon and Z taken together with R 1 and R 2 or Z taken together with R 3 and R 4 are S, ##STR3## to which is grafted a polymer of a compound of the formula: ##STR4## wherein R 7 is hydrogen, methyl or ethyl and R 8 is alkyl of from 3 to about 20 carbon atoms.
Claim 3
Dependent Claim
24 words
A composition in accordance with claim 1 wherein the aromatic polycarbonate is from about 70 to 99 parts by weight of the resinous components.
Claim 4
Dependent Claim
24 words
A composition in accordance with claim 2 wherein the aromatic polycarbonate is from about 75 to 90 parts by weight of the resinous components.
Claim 5
Dependent Claim
15 words
A composition in accordance with claim 3 wherein R 5 and R 6 are allyl.
Claim 6
Dependent Claim
19 words
A composition in accordance with claim 4 wherein Z and R 3 and R 4 taken together are ##STR5##
Claim 7
Dependent Claim
16 words
A composition in accordance with claim 4 wherein the aromatic polycarbonate is derived from bisphenol A.
Claim 8
Dependent Claim
16 words
A composition in accordance with claim 1 wherein the aromatic polycarbonate is derived from bisphenol A.
Claim 9
Dependent Claim
19 words
A composition in accordance with claim 2 wherein R 8 is from about 6 to about 20 carbon atoms.
Claim 10
Dependent Claim
17 words
A composition in accordance with claim 8 wherein R 8 is 2-ethylhexyl and R 7 is hydrogen.
References Cited (Backward Citations)
US3124554A
Cited
US3462515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |