US4381358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolyester-carbonates containing aliphatic diol co-monomers
Assignee: General Electric Co
•
Filing: 1981-10-16
•
Granted: 1983-04-26
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Expires: 2001-10-16
Abstract
Abstract Copolyester-carbonate resins, and articles molded therefrom, exhibiting improved processability comprising the reaction product of; (i) at least one dihydric phenol; (ii) a carbonyl halide carbonate precursor; (iii) at least one difunctional carboxylic acid or a reactive derivative thereof; and (iv) at least one bishaloformate represented by the general formula ##STR1## wherein X represents a halogen radical and R represents an alkylene radical, said bishaloformate being present in an amount effective to improve the processability of said resin.
Inventors
- 👤 Niles R. Rosenquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
74 words
A copolyester-carbonate resin composition exhibiting improved processability comprised of the polymerized reaction product of: (i) at least one dihydric phenol; (ii) a carbonyl halide carbonate precursor; (iii) at least one difunctional carboxylic acid or a reactive derivative thereof; and (iv) a processability improving amount of at least one bishaloformate represented by the formula ##STR12## wherein X represents a halide radical and R represents an alkylene radical containing from 2 to about 20 carbon atoms.
Claim 2
Dependent Claim
74 words
A copolyester-carbonate resin composition exhibiting improved processability comprised of the polymerized reaction product of: (i) at least one dihydric phenol; (ii) a carbonyl halide carbonate precursor; (iii) at least one difunctional carboxylic acid or a reactive derivative thereof; and (iv) a processability improving amount of at least one bishaloformate represented by the formula ##STR12## wherein X represents a halide radical and R represents an alkylene radical containing from 2 to about 20 carbon atoms.
Claim 3
Dependent Claim
30 words
The composition of claim 1 wherein said bishaloformate is present in an amount of from about One to about 10 mole percent, based on the amount of dihydric phenol present.
Claim 4
Dependent Claim
15 words
The composition of claim 2 wherein said alkylene radical is a straight chain alkylene radical.
Claim 5
Dependent Claim
15 words
The composition of claim 2 wherein said alkylene radical is a branched chain alkylene radical.
Claim 6
Dependent Claim
18 words
The composition of claim 4 wherein branching occurs at the beta carbon atom of said branched alkylene radical.
Claim 7
Dependent Claim
15 words
The composition of claim 2 wherein said difunctional carboxylic acid is an aromatic dicarboxylic acid.
Claim 8
Dependent Claim
22 words
The composition of claim 2 wherein said reactive derivative of said carboxylic acid is the diacid halide of an aromatic dicarboxylic acid.
Claim 9
Dependent Claim
13 words
The composition of claim 7 wherein said diacid halide is a diacid chloride.
Claim 10
Dependent Claim
11 words
The composition of claim 2 wherein said carbonyl halide is phosgene.
Claim 11
Dependent Claim
11 words
The composition of claim 8 wherein said carbonyl halide is phosgene.
Claim 12
Dependent Claim
12 words
The composition of claim 10 wherein said dihydric phenol is bisphenol A.
Claim 13
Dependent Claim
18 words
The composition of claim 11 wherein said diacid chloride is a mixture of terephthaloyl chloride and isophthaloyl chloride.
Claim 14
Dependent Claim
15 words
The composition of claim 12 wherein said alkylene radical is a beta branched alkylene radical.
Claim 15
Dependent Claim
12 words
The composition of claim 13 which further contains a phosphite color stabilizer.
Claim 16
Dependent Claim
12 words
The composition of claim 14 which further contains a epoxide hydrolytic stabilizer.
Claim 17
Dependent Claim
11 words
The composition of claim 15 which further contains a flame retardant.
Claim 18
Dependent Claim
19 words
The composition of claim 2 which further contains a flame retardant amount of at least one flame retardant compound.
Claim 19
Dependent Claim
13 words
The composition of claim 1 wherein said halide radical is the chloride radical.
Claim 20
Dependent Claim
14 words
The composition of claim 18 wherein said alkylene radical is a branched chain radical.
Claim 21
Dependent Claim
17 words
The composition of claim 19 wherein said branched chain alkylene radical is a beta branched alkylene radical.
Claim 22
Dependent Claim
11 words
The composition of claim 20 wherein said carbonyl halide is phosgene.
Claim 23
Dependent Claim
12 words
The composition of claim 21 wherein said dihydric phenol is bisphenol A.
Claim 24
Dependent Claim
20 words
The composition of claim 22 wherein said difunctional carboxylic acid is selected from isophthalic acid, terephthalic acid, and mixtures thereof.
Claim 25
Dependent Claim
19 words
The composition of claim 23 wherein said difunctional carboxylic acid is a mixture of isophthalic acid and terephthalic acid.
Claim 26
Dependent Claim
24 words
The composition of claim 22 wherein said reactive derivative of said difunctional carboxylic acid is selected from isophthaloyl chloride, terephthaloyl chloride, and mixtures thereof.
Claim 27
Dependent Claim
23 words
The composition of claim 25 wherein said reactive derivative of said difunctional carboxylic acid is a mixture of isophthaloyl chloride and terephthaloyl chloride.
Claim 28
Dependent Claim
22 words
The composition of claim 26 wherein said composition contains a stabilizing amount of a phosphite color stabilizer and a epoxide hydrolytic stabilizer.
Claim 29
Dependent Claim
18 words
The composition of claim 27 wherein said composition contains a flame retardant amount of a flame retardant compound.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |