03994867 is referenced by 13 patents and cites 2 patents.

There are provided processes and compositions for obtaining organic polymeric materials having near-zero uniaxial thermal expansion coefficients. According to one embodiment, an organic polymer having a negative uniaxial thermal expansion coefficient is treated by thermal processing under conditions sufficient to cause at least a portion of the polymer chains to become misaligned, thereby decreasing the magnitude of this thermal expansion coefficient to nearly zero. According to a second embodiment, one or more organic polymers having a negative uniaxial thermal expansion coefficient are combined with one or more materials having a positive thermal expansion coefficient to yield a composite material having a uniaxial thermal expansion coefficient which is nearly zero.

Useful in the practice of the invention are polyacetylenes having a negative macroscopic thermal expansion coefficient, which are obtained by the solid-state polymerization of crystalline monomers containing two or more conjugated acetylene groups.

Title
Organic polymers with near-zero uniaxial thermal expansion coefficients
Application Number
5/537488
Publication Number
3994867
Application Date
December 30, 1974
Publication Date
November 30, 1976
Inventor
Kwok Chun Yee
Teaneck
NJ, US
Anthony F Preziosi
Ledgewood
NJ, US
Edith A Turi
Livingston
NJ, US
Ray H Baughman
Morris Plains
NJ, US
Agent
Arthur J Plantamura
David W Collins
Assignee
Allied Chemical Corporation
NJ, US
IPC
G08F 6/26
C08F 6/00
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