Patent US4612362A successfully refreshed from Google Patents.
US4612362A
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Thermotropic polyester-carbonates containing 2,2-dimethyl-1,3-propanediol
Assignee: Honeywell International Inc
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Filing: 1985-03-27
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Granted: 1986-09-16
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Expires: 2005-03-27
Abstract
Abstract A thermotropic polyester carbonate containing aromatic diacyl moieties, aromatic dihydroxy moieties and carbonate moieties, wherein up to 50 mole percent of the aromatic dioxy moieties are replaced with aliphatic dihydroxy moiety, such as 2,2-dimethyl-1,3-propanediol.
Inventors
- 👤 Yu-Chin Lai
- 👤 Bruce T. DeBona
- 👤 Dusan C. Prevorsek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:06
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
97 words
A poly(ester carbonate) polymer comprising aromatic diacyl moieties, cyclic and aliphatic dioxy moieties and carbonate moieties, from about 10 to about 50 mole percent of said dioxy moieties are aliphatic moieties of the formula: ##STR3## wherein: R 1 , R 2 , R 5 and R 6 are the same or different and are hydrogen or alkyl; and R 3 and R 4 are the same or different and are alkyl; and the remainder of said dioxy moieties are cyclic moieties and said aliphatic and cyclic dioxy moieties in amounts such that said polymer exhibits thermotropic properties.
Claim 2
Dependent Claim
97 words
A poly(ester carbonate) polymer comprising aromatic diacyl moieties, cyclic and aliphatic dioxy moieties and carbonate moieties, from about 10 to about 50 mole percent of said dioxy moieties are aliphatic moieties of the formula: ##STR3## wherein: R 1 , R 2 , R 5 and R 6 are the same or different and are hydrogen or alkyl; and R 3 and R 4 are the same or different and are alkyl; and the remainder of said dioxy moieties are cyclic moieties and said aliphatic and cyclic dioxy moieties in amounts such that said polymer exhibits thermotropic properties.
Claim 3
Dependent Claim
58 words
A polymer according to claim 1 wherein: R 1 , R 2 , R 5 and R 6 are the same or different and are hydrogen or alkyl having from 1 to about 7 carbon atoms; and R 3 and R 4 are the same or different and are alkyl having from 1 to about 7 carbon atoms.
Claim 4
Dependent Claim
57 words
A polymer according to claim 2 wherein: R 1 , R 2 , R 5 and R 6 are the same or different and are hydrogen or alkyl having from 1 to about 4 carbon atoms; and R 3 and R 4 are the same or different and are alkyl having 1 to about 4 carbon atoms.
Claim 5
Dependent Claim
42 words
A polymer according to claim 3 wherein: R 1 , R 2 , R 5 and R 6 are hydrogen; and R 3 and R 4 are the same or different and are alkyl having from 1 to about 4 carbon atoms.
Claim 6
Dependent Claim
28 words
A polymer according to claim 4 wherein: R 1 , R 2 , R 5 and R 6 are hydrogen; and R 3 and R 4 are methyl.
Claim 7
Dependent Claim
21 words
A polymer according to claim 1 wherein from about 10 to about 50 mole percent of said dioxy moieties are aliphatic.
Claim 8
Dependent Claim
21 words
A polymer according to claim 6 wherein from about 15 to about 45 mole percent of said dioxy moieties are aliphatic.
Claim 9
Dependent Claim
21 words
A polymer according to claim 7 wherein from about 25 to about 40 mole percent of said dioxy moieties are aliphatic.
Claim 10
Dependent Claim
13 words
A polymer according to claim 1 wherein said cyclic dioxy moieties are aromatic.
Claim 11
Dependent Claim
46 words
A polymer according to claim 9 wherein all or a portion of said aromatic dioxy moieties are derived from hydroquinone monomer selected from the group consisting of substituted and unsubstituted hydroquinone wherein permissible substituents are selected from the group consisting of halo, alkyl, alkoxy, and phenyl.
Claim 12
Dependent Claim
21 words
A polymer according to claim 10 wherein all or a portion of said aromatic dioxy moieties are derived from substituted hydroquinone.
Claim 13
Dependent Claim
25 words
A polymer according to claim 1 wherein said aromatic dihydroxy moieties are derived from hydroquinone monomers selected from the group consisting of alkyl substituted hydroquinone.
Claim 14
Dependent Claim
18 words
A polymer according to claim 12 wherein said aromatic dihydroxy moieties are derived from t-butylhydroquinone monomer or methylhydroquinone.
Claim 15
Dependent Claim
26 words
A polymer according to claim 1 wherein said cyclic moieties are a mixture of aromatic dioxy moieties which includes moieties which are derived from substituted hydroquinone.
Claim 16
Dependent Claim
25 words
A polymer according to claim 1 wherein said acyl moieties are selected from the group consisting of terephthaloyl, isophthaloyl, 2,6-diacylnaphthalene, 1,4-cyclohexane dicarbonyl and 1,3-cyclohexane dicarbonyl.
Claim 17
Dependent Claim
20 words
A polymer according to claim 15 wherein said acyl moieties are selected from the group consisting of terephthaloyl and isophthaloyl.
Claim 18
Dependent Claim
12 words
A polymer according to claim 16 wherein said acyl moieties are terephthaloyl.
References Cited (Backward Citations)
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