US 5,691,442 AGranted

Transparent poly(arylene ether) compositions

AssigneeThe United States of America as represented by the Secretary of the Air Force

InventorsMarilyn R. Unroe, Rakesh K. Gupta, Ram B. Sharma, Neil C. Thiesing

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Abstract

The transparency of poly(arylene ether) homopolymers and copolymers is improved by endcapping the polymer chain with an unsubstituted phenolic-based endcapping agent.

Claims7

Dependent claims

A method for increasing the transparency of poly(arylene ether) homopolymers and copolymers which comprises endcapping the polymeric chain with about 0.5-4 mol % 4-phenylphenol, based on the total dihydric phenolic moieties present.

Dependencies are inferred from the claim text.

Facts

Application: 08/715,135Filed 17 Sep 1996
Granted: 25 Nov 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

C08G 65/48
From hydroxy compounds or their metallic derivatives: polymers modified by chemical after-treatment
C08G 65/4006
From phenols and other compounds , e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group: or containing elements other than carbon,…
C08G 65/4012
From phenols and other compounds , e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group: other compound containing a ketone group,…
C08G
Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds

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No related US applications are recorded in the indexed filing history.

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