EP0095938A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Aromatic polyesters and high strength filaments thereof
Assignee: EIDP Inc
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Filing: 1983-06-01
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Granted: —
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Expires: 2003-06-01
Abstract
Abstract Filaments, films or moldings are prepared from meltable polyesters derived from chloro- or methyl-hydroquinone, terephthalic acid, a member of the group consisting of 4,4'-dihydroxybiphenyl, and 4-carboxy-4'-hydroxybiphenyl and a member of the group consisting of isophthalic acid, resorcinol and 1,3-hydroxybenzoic acid. As-spun filaments from these polymers can be heat treated while free from tension to increase their tenacity.
Inventors
- 👤 Roger Keith Siemionko
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 21:44
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/78; D01F6/84; C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/193; C08G63/60; C08G63/605; C08G63/68; C08G63/682; C08G63/6824; C08G63/6826
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
A polyester consisting essentially of units having structural formulas as follows: and where X is chloro or methyl; Y is either carbonyl or oxy and each Z is independently selected from the group consisting of oxy and carbonyl; unit I is present in the amount of from about 30 to 45 mol percent, unit II is present in the amount of from about 30 to 50 mol %, unit III is present in the amount of from about 5 to 20 mol percent and unit IV is present in the amount of from about 2 to 15 mol percent with the total dioxy aryl units and the total dicarbonyl aryl units being present in substantially equimolar amounts.
Claim 2
Dependent Claim
117 words
A polyester consisting essentially of units having structural formulas as follows: and where X is chloro or methyl; Y is either carbonyl or oxy and each Z is independently selected from the group consisting of oxy and carbonyl; unit I is present in the amount of from about 30 to 45 mol percent, unit II is present in the amount of from about 30 to 50 mol %, unit III is present in the amount of from about 5 to 20 mol percent and unit IV is present in the amount of from about 2 to 15 mol percent with the total dioxy aryl units and the total dicarbonyl aryl units being present in substantially equimolar amounts.
Claim 3
Dependent Claim
64 words
A polyester according to Claim 1 wherein unit I is present in the amount of from about 35-45 mol %, unit II is present in the amount of from about 35-50 mol %, unit III is present in the amount of from about 5 to 15 mol % and unit IV is present in the amount of from about 3 to 15 mol %.
Claim 4
Dependent Claim
20 words
A polyester according to Claim 1 or claim 2 where X is chloro, Y is oxy and Z is oxy.
Claim 5
Dependent Claim
20 words
A polyester according to Claim 1 or claim 2 where X is chloro, Y is oxy and Z is carbonyl.
Claim 6
Dependent Claim
20 words
A polyester according to Claim 1 or claim 2 where X is chloro, Y is carbonyl and Z is oxy.
Claim 7
Dependent Claim
14 words
A filament of a polyester according to any one of claims 1 - 5.
Claim 8
Dependent Claim
13 words
A film of a polyester according to any one of claims.1 - 5.
Claim 9
Dependent Claim
15 words
A molded article of a polyester according to any one of claims 1 - 5.
References Cited (Backward Citations)
No citation records indexed.
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