Crosslinked organometallic block copolymers and process for prod

Details Crosslinked organometallic block copolymers and process for prod Crosslinked organometallic block copolymers and process for prod

1980-06-18

1982-08-31

Higel, Floyd D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

2604293, 2604295, 528 10, 528 17, 528 31, 528 33, 528 35, 528 39, 528 14, 556431, 556435, 20415913, C08G 7760, C08G 7754

Patent

active

043473474

ABSTRACT:
A process for producing an organometallic copolymer composed of a polycarbosilane portion and a polymetallosiloxane portion crosslinked with each other, which comprises reacting (1) a polycarbosilane having a main chain skeleton composed mainly of carbosilane units of the formula --Si-CH.sub.2 --, with (2) a polymetallosiloxane having a main chain skeleton composed of metalloxane units of the formula --M-O-- wherein M represents Ti or Zr and siloxane units of the formula --Si-O--, in an organic solvent in an inert atmosphere thereby to bond at least some of the silicon atoms of said polycarbosilane to at least some of the metal atoms M and/or silicon atoms of said polymetallosiloxane through an oxygen atom; and the organometallic copolymer obtained by the aforesaid process.

REFERENCES:
patent: 2680723 (1954-06-01), Kronstein
patent: 2716656 (1955-08-01), Boyd
patent: 3057822 (1962-10-01), Rust et al.
patent: 3625934 (1971-12-01), Rinse
patent: 3814730 (1974-06-01), Karstedt
patent: 4072655 (1978-02-01), Louis et al.
patent: 4151344 (1979-04-01), Doss et al.
patent: 4159259 (1979-06-01), Yajima et al.

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