SYNTHESIS OF REGULATED STRUCTURE POLYPHENYLETHER-SILOXANE BLOCK COPOLYMERS.

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Abstract:

In an attempt to prepare elastomers stable at high temperatures, polymers with molecular weights estimated to be as high as 100,000 were formed by condensation of p,p-dihydroxydiphenylether with diphenylsilanes. Thermal gravimetric analyses for some of these polymers are reported, and their thermal stability and elastomeric properties are discussed. The preparation of dihydroxy derivatives of diand poly- phenyl ethers by alkaline hydrolysis and by intermolecular dehydration is also described. Author

Author(s):
Macfarlane, Robert, Jr. ; Yankura, Eugene S.
Author Organization(s):
UNITED STATES RUBBER CO NAUGATUCK CONN CHEMICAL DIV
Descriptive Note:
Terminal rept., 1 Jul 61-15 Jan 64,
Annotation:
High-temperature elastomers from pip'-dihydroxy diphenylether block copolymerized with diphenyl silanes.
Pagination:
0034

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DA19 020ORD5507
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*HEAT RESISTANT PLASTICS, *ELASTOMERS, *SILICONE PLASTICS, SILANES, SILANES, SYNTHESIS(CHEMISTRY), BIPHENYL, ETHERS, ALCOHOLS, COPOLYMERIZATION, CONDENSATION REACTIONS, HYDROLYSIS, DEHYDRATION
Report Date:
1964 Mar 01