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US4393190A
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Carbonate copolymers prepared from imide reactants
Assignee: General Electric Co
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Filing: 1981-09-21
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Granted: 1983-07-12
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Expires: 2001-09-21
Abstract
Abstract Novel carbonate polymers comprised of the reaction product of a dihydric phenol, a carbonate precursor, and at least one imide selected from the group of compounds represented by the formulae ##STR1##
Inventors
- 👤 John A. Tyrell
- 👤 Gary L. Freimiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:27
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/04; C08G64/06; C08G64/08; C08G64/12; C08G64/14
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
115 words
An endcapped polymer composition comprised of the reaction product of: (i) a dihydric phenol; (ii) a carbonate precursor; and (iii) at least one imide selected from the group consisting of imides in chain terminating effective amount represented by the general formula ##STR16## and imides in quantities of from about 1 to about 85 mole percent based on the amount of dihydric phenol represented by the general formula ##STR17## wherein each R is independently selected from hydrogen, alkyl radicals, alkoxy radicals, and halogen radicals, and wherein each R 1 is independently selected from hydrogen, alkyl radicals, alkoxy radicals, and halogen radicals with the proviso that at least one imide compound of the first formula is employed.
Claim 2
Dependent Claim
115 words
An endcapped polymer composition comprised of the reaction product of: (i) a dihydric phenol; (ii) a carbonate precursor; and (iii) at least one imide selected from the group consisting of imides in chain terminating effective amount represented by the general formula ##STR16## and imides in quantities of from about 1 to about 85 mole percent based on the amount of dihydric phenol represented by the general formula ##STR17## wherein each R is independently selected from hydrogen, alkyl radicals, alkoxy radicals, and halogen radicals, and wherein each R 1 is independently selected from hydrogen, alkyl radicals, alkoxy radicals, and halogen radicals with the proviso that at least one imide compound of the first formula is employed.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said carbonate precursor is a carbonyl halide.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said carbonyl halide is carbonyl chloride.
Claim 5
Dependent Claim
17 words
The composition of claim 2 wherein said imide is an imide represented by the general formula ##STR18##
Claim 6
Dependent Claim
12 words
The composition of claim 4 wherein said dihydric phenol is bisphenol A.
Claim 7
Dependent Claim
10 words
The composition of claim 5 wherein each R is hydrogen.
Claim 8
Dependent Claim
17 words
The composition of claim 2 wherein said imide is an imide represented by the general formula ##STR19##
Claim 9
Dependent Claim
12 words
The composition of claim 7 wherein said dihydric phenol is bisphenol A.
Claim 10
Dependent Claim
11 words
The composition of claim 8 wherein each R 1 is hydrogen.
Claim 11
Dependent Claim
32 words
The composition of claim 2 wherein (iii) is a mixture of at least one imide represented by the general formula ##STR20## and at least one imide represented by the general formula ##STR21##
Claim 12
Dependent Claim
106 words
A copolyester-carbonate polymer composition comprised of the reaction product of: (i) a dihydric phenol; (ii) a difunctional aromatic dicarboxylic acid or its reactive derivative; (iii) a carbonate precursor; and (iv) at least one imide selected from the group of imides in chain terminating effective amount represented by the general formula ##STR22## wherein each R is independently selected from hydrogen, alkyl radicals, halogen radicals and alkoxy radicals, and each R 1 is independently selected from hydrogen, alkyl radicals, halogen radicals and alkoxy radicals; the molar ratio of (i) plus the compound of the second formula (iv) to (ii) is in the range of 1.00:0.05 to about 1.00:0.70.
Claim 13
Dependent Claim
106 words
A copolyester-carbonate polymer composition comprised of the reaction product of: (i) a dihydric phenol; (ii) a difunctional aromatic dicarboxylic acid or its reactive derivative; (iii) a carbonate precursor; and (iv) at least one imide selected from the group of imides in chain terminating effective amount represented by the general formula ##STR22## wherein each R is independently selected from hydrogen, alkyl radicals, halogen radicals and alkoxy radicals, and each R 1 is independently selected from hydrogen, alkyl radicals, halogen radicals and alkoxy radicals; the molar ratio of (i) plus the compound of the second formula (iv) to (ii) is in the range of 1.00:0.05 to about 1.00:0.70.
Claim 14
Dependent Claim
13 words
The composition of claim 12 wherein said carbonate precursor is a carbonyl halide.
Claim 15
Dependent Claim
12 words
The composition of claim 12 wherein said carbonyl halide is carbonyl chloride.
Claim 16
Dependent Claim
21 words
The composition of claim 13 wherein said difunctional aromatic carboxylic acid is selected from isophthalic acid, terephthalic acid, and mixtures thereof.
Claim 17
Dependent Claim
25 words
The composition of claim 13 wherein said reactive derivative of said difunctional aromatic carboxylic acid is selected from isophthaloyl halide, terephthaloyl halide, and mixtures thereof.
Claim 18
Dependent Claim
12 words
The composition of claim 14 wherein said dihydric phenol is bisphenol A.
Claim 19
Dependent Claim
12 words
The composition of claim 15 wherein said dihydric phenol is bisphenol A.
Claim 20
Dependent Claim
15 words
The composition of claim 12 wherein said imide is represented by the general formula ##STR23##
Claim 21
Dependent Claim
15 words
The composition of claim 12 wherein said imide is represented by the general formula ##STR24##
Claim 22
Dependent Claim
10 words
The composition of claim 5 wherein each R is hydrogen.
Claim 23
Dependent Claim
10 words
The composition of claim 18 wherein each R is hydrogen.
Claim 24
Dependent Claim
11 words
The composition of claim 19 wherein each R 1 is hydrogen.
References Cited (Backward Citations)
US3536670A
Cited
US3652715A
Cited
US3729446A
Cited
US3770697A
Cited
US3567685A
Cited
US3833681A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
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