Accession Number : ADD011780

Title :   Synthesis of Arylene Siloxanylene Polymers and Copolymers.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Rosenberg,H ; Tsai,T T

Report Date : 21 May 1985

Pagination or Media Count : 11

Abstract : This invention is directed to the preparation of certain arylene bis-silanols in highly purified form and to the preparation of five new arylene bis-silanols in particular, along with a procedure for ploymerizing these and other arylene-type bis-silanols using phosgene as a polymerization promotor or catalyst, to obtain highly purified, high molecular weight arylenesiloxanylene polymers. Preferred polymers are those which, when laminated to polycarbonate sheets or glass maintain their transparency, stability and adherence to said substrates at temperatures of up to and including 400 F. Such polymers are useful for the formulation of high temperature interlayers for windshields and canopies for aircraft and related aerospace vehicles.

Descriptors :   *PATENTS, *SYNTHESIS(CHEMISTRY), *COPOLYMERS, *POLYMERS, POLYMERIZATION, ARYL RADICALS, SILOXANES, POLYCARBONATES, MOLECULAR WEIGHT, MOLECULAR STRUCTURE, ALKYL RADICALS, SHEETS, WINDSHIELDS, INVENTIONS, AIRCRAFT, LAYERS, AEROSPACE CRAFT

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE