US4871830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyestercarbonate containing divalent residue of polymerized alkadiene monomer
Assignee: Individual
•
Filing: 1987-09-08
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Granted: 1989-10-03
•
Expires: 2007-09-08
Abstract
Abstract An aromatic ester carbonate resin comprised of: (i) at least one recurring structural unit represented by the formula ##STR1## (ii) at least one recurring structural unit selected from structural units represented by the formulae ##STR2## or mixtures thereof; and (iii) at least one recurring structural unit represented by the formula ##STR3## (iv) at least one recurring structural unit selected from structural units represented by the formulae ##STR4## or mixtures thereof; wherein R is independently selected from halogen, monovalent hydrocarbon radicals, or monovalent hydrocarbonoxy radicals, W is selected from divalent hydrocarbon radicals, ##STR5## A is the divalent residue of at least one polymerized conjugated alkadiene and has a weight average molecular weight of at least about 600, m is independently selected from integers having a value of from 0 to 4, and b is either zero or one, and wherein B is the divalent residue of an ester precursor.
Inventors
- 👤 Victor Mark, deceased
- 👤 representative by Carol M. Mark
- 👤 representative by Ester H. Mark
- 👤 Edward N. Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:10
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/04; C08G64/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
148 words
An aromatic ester carbonate resin comprised of: (i) at least one recurring structural unit represented by the formula ##STR20## (ii) at least one recurring structural unit selected from structural units represented by the formulae ##STR21## or mixtures thereof; and (iii) at least one recurring structural unit represented by the formula ##STR22## (iv) at least one recurring structural unit selected from structural units represented by the formulae ##STR23## or mixtures thereof; wherein R is independently selected from halogen, monovalent hydrocarbon radicals, or monovalent hydrocarbonoxy radicals, W is selected from divalent hydrocarbon radicals, ##STR24## A is the divalent residue of at least one polymerized conjugated alkadiene and has a weight average molecular weight of at least about 600, m is independently selected from integers having a value of from 0 to 4, and b is either zero or one, and wherein B is the divalent residue of an ester precursor.
Claim 2
Dependent Claim
148 words
An aromatic ester carbonate resin comprised of: (i) at least one recurring structural unit represented by the formula ##STR20## (ii) at least one recurring structural unit selected from structural units represented by the formulae ##STR21## or mixtures thereof; and (iii) at least one recurring structural unit represented by the formula ##STR22## (iv) at least one recurring structural unit selected from structural units represented by the formulae ##STR23## or mixtures thereof; wherein R is independently selected from halogen, monovalent hydrocarbon radicals, or monovalent hydrocarbonoxy radicals, W is selected from divalent hydrocarbon radicals, ##STR24## A is the divalent residue of at least one polymerized conjugated alkadiene and has a weight average molecular weight of at least about 600, m is independently selected from integers having a value of from 0 to 4, and b is either zero or one, and wherein B is the divalent residue of an ester precursor.
Claim 3
Dependent Claim
21 words
The resin of claim 1 wherein said ester precursor is selected from difunctional carboxylic acids or their ester forming reactive derivatives.
Claim 4
Dependent Claim
29 words
The resin of claim 2 wherein said difunctional carboxylic acids or their ester forming reactive derivatives are selected from aromatic difunctional carboxylic acids or their ester forming reactive derivatives.
Claim 5
Dependent Claim
22 words
The resin of claim 3 wherein said aromatic ester forming reactive derivatives are selected from isophthaloyl dichloride, terephthaloyl dichloride, or mixtures thereof.
Claim 6
Dependent Claim
24 words
The resin of claim 1 wherein (ii) and (iv) are present in amounts at least effective to improve the impact properties of said resin.
Claim 7
Dependent Claim
19 words
The resin of claim 1 wherein (iv) is at least one recurring structural unit represented by the formula ##STR25##
Claim 8
Dependent Claim
19 words
The resin of claim 6 wherein (ii) is at least one recurring structural unit represented by the formula ##STR26##
Claim 9
Dependent Claim
27 words
The resin of claim 7 wherein (ii) and (iv) are present in an amount of at least effective to improve of the impact properties of said resin.
Claim 10
Dependent Claim
19 words
The resin of claim 1 wherein (iv) is at least one recurring structural unit represented by the formula ##STR27##
Claim 11
Dependent Claim
19 words
The resin of claim 9 wherein (ii) is at least one recurring structural unit represented by the formula ##STR28##
Claim 12
Dependent Claim
25 words
The resin of claim 10 wherein (ii) and (iv) are present in an amount at least effective to improve the impact properties of said resin.
References Cited (Backward Citations)
US4728716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |