US4701516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolyester-carbonate resin containing recurring divalent units from trimellitic acid derivative
Assignee: General Electric Co
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Filing: 1985-12-30
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Granted: 1987-10-20
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Expires: 2005-12-30
Abstract
Abstract A thermoplastic polyester-carbonate resin containing in the polymer chain, divalent moieties of the formula: ##STR1## wherein R represents aliphatic hydrocarbyl of from 1 to 9 carbon atoms, inclusive, halogen substituted aliphatic hydrocarbyl of 1 to 9 carbon atoms, inclusive, aralkyl of 7 to 10 carbon atoms, inclusive and halogen substituted aralkyl of 7 to 10 carbon atoms, inclusive; a and b are each whole number integers of from 0 to 1; and the sum of a+b is 1 and wherein there are sufficient linkages of formula I to lower the glass transition temperature of the polymer.
Inventors
- 👤 Niles R. Rosenquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:47
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
96 words
A thermoplastic polyester-carbonate resin containing in the polymer chain, divalent moieties of the formula: ##STR18## wherein R represents aliphatic hydrocarbyl of from 1 to 9 carbon atoms, inclusive, halogen substituted aliphatic hydrocarbyl of 1 to 9 carbon atoms, inclusive, aralkyl of 7 to 10 carbon atoms, inclusive or halogen substituted aralkyl of 7 to 10 carbon atoms, inclusive; a and b are each whole number integers of from 0 to 1; and the sum of a+b is 1 and wherein there are sufficient linkages of formula I to lower the glass transition temperature of the polymer.
Claim 2
Dependent Claim
96 words
A thermoplastic polyester-carbonate resin containing in the polymer chain, divalent moieties of the formula: ##STR18## wherein R represents aliphatic hydrocarbyl of from 1 to 9 carbon atoms, inclusive, halogen substituted aliphatic hydrocarbyl of 1 to 9 carbon atoms, inclusive, aralkyl of 7 to 10 carbon atoms, inclusive or halogen substituted aralkyl of 7 to 10 carbon atoms, inclusive; a and b are each whole number integers of from 0 to 1; and the sum of a+b is 1 and wherein there are sufficient linkages of formula I to lower the glass transition temperature of the polymer.
Claim 3
Dependent Claim
23 words
The resin of claim 1 wherein said moiety of formula I comprises at least about 2% of the linkages in the polymer chain.
Claim 4
Dependent Claim
145 words
The resin of claim 1 which contains in the polymer chain repeating units of the formula: ##STR19## wherein R is as defined in claim 1; A is selected from the group consisting of a divalent hydrocarbon radical containing from 1 to about 15 carbon atoms; a halogen substituted divalent hydrocarbon radical containing from 1 to about 15 carbon atoms; ##STR20## and wherein each X is independently selected from the group consisting of halogen, a monovalent hydrocarbon radical of from 1 to about 8 carbon atoms; an aryl group of from 6-18 carbon atoms, an aralkyl group of from 7 to about 14 carbon atoms, an oxyalkyl group of from 1 to about 8 carbon atoms, and an oxyaryl group of from 6 to 18 carbon atoms; and wherein m is zero or 1 and y is a whole number integer of from 0 to 4.
Claim 5
Dependent Claim
19 words
The composition in accordance with claim 1 wherein aliphatic hydrocarbyl is from 1 to about 6 carbon atoms, inclusive.
Claim 6
Dependent Claim
17 words
The resin of claim 1 wherein R represents aliphatic hydrocarbyl of 1 to 6 carbon atoms, inclusive.
Claim 7
Dependent Claim
18 words
The resin of claim 1 wherein R represents halogen substituted hydrocarbyl of 1 to 9 carbon atoms, inclusive.
Claim 8
Dependent Claim
16 words
The resin of claim 1 wherein R represents aralkyl of 7 to 10 carbon atoms, inclusive.
Claim 9
Dependent Claim
18 words
The resin of claim 1 wherein R represents halogen substituted aralkyl of 7 to 10 carbon atoms, inclusive.
Claim 10
Dependent Claim
9 words
The resin of claim 1 wherein R is benzyl.
Claim 11
Dependent Claim
9 words
The resin of claim 1 wherein R is neopentyl.
Claim 12
Dependent Claim
9 words
The resin of claim 1 wherein R is alkyl.
Claim 13
Dependent Claim
9 words
The resin of claim 1 wherein R is cyclohexyl.
Claim 14
Dependent Claim
9 words
The resin of claim 1 wherein R is 4-tert-butylcyclohexyl.
Claim 15
Dependent Claim
9 words
The resin of claim 1 wherein R is trifluoroethyl.
Claim 16
Dependent Claim
9 words
The resin of claim 1 wherein R is methyl.
Claim 17
Dependent Claim
9 words
The resin of claim 1 wherein R is isopropyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |