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Title: Diorganosilacetylene-alt-diorganosilvinylene polymers and a process of preparation

The present invention provides linear organosilicon polymers including acetylene and vinylene moieties, and a process for their preparation. These diorganosilacetylene-alt-diorganosilvinylene linear polymers can be represented by the formula: --[--(R.sup.1)(R.sup.2)Si--C.tbd.C--(R.sup.3)(R.sup.4)Si--CH.dbd.CH--].sub .n --, wherein n.gtoreq.2; and each R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently selected from the group consisting of hydrogen, halogen, alkyl, alkenyl, aryl, and aralkyl radicals. The polymers are soluble in organic solvents, air stable, and can be pulled into fibers or cast into films. They can be thermally converted into silicon carbide ceramic materials.
Inventors:
 [1];  [1];  [1]
  1. (Ames, IA)
Issue Date:
OSTI Identifier:
870109
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA) AMES
Patent Number(s):
US 5457074
Application Number:
08/202,936
Contract Number:
W-7405-ENG-82
Research Org:
Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
Country of Publication:
United States
Language:
English
Subject:
diorganosilacetylene-alt-diorganosilvinylene; polymers; process; preparation; provides; linear; organosilicon; including; acetylene; vinylene; moieties; represented; formula; si-c; tbd; c-; si-ch; dbd; ch-; gtoreq; independently; selected; consisting; hydrogen; halogen; alkyl; alkenyl; aryl; aralkyl; radicals; soluble; organic; solvents; air; stable; pulled; fibers; cast; films; thermally; converted; silicon; carbide; ceramic; materials; linear polymers; provides linear; organic solvents; independently selected; ceramic material; organic solvent; silicon carbide; ceramic materials; polymers including; vinylene moieties; carbide ceramic; aralkyl radicals; air stable; organosilicon polymers; thermally converted; linear organosilicon; diorganosilacetylene-alt-diorganosilvinylene polymers; including acetylene; organosilicon polymer; alkyl radical; ceramic mater; /501/525/526/