US4590253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosilicon polymer and process for production thereof
Assignee: KUROSAKI REFRACTORIS CO Ltd
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Filing: 1985-01-18
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Granted: 1986-05-20
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Expires: 2005-01-18
Abstract
Abstract An organosilicon polymer whose main-chain skeleton is composed mainly of following structural units (A), (B), (C), (D), (E) and (F) ##STR1## wherein R represents CH 3 or H, said structural units forming linear, branched and cyclic structures, and said main-chain skeleton further having a polysilane skeleton ##STR2## (2≦n≦10). The said organosilicon polymer can be produced by adding at least one anhydrous metal halide to a polysilane having the structure ##STR3## the amount of the metal halide being 0.5 to 10% by weight based on the weight of the polysilane; and heating the mixture in an atmosphere inert to the reaction.
Inventors
- 👤 Yoshio Hasegawa
- 👤 Takeo Kobori
- 👤 Kazushige Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:13
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/60; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956; C01B32/963; C01B32/977; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/571; C01P; C01P2002/00; C01P2002/80; C01P2002/82; C01P2002/84; C01P2002/86; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
An organosilicon polymer which comprises a main chain skeleton consisting of the following structural units (A), (B), (C), (D), (E) and (F): ##STR27## wherein R represents CH 3 or H and wherein each such structural unit is bound through its free valencies with a group or formulae A through F, said structural units forming linear, branched and cyclic structures, said main chain skeleton further having a linear polysilane skeleton of the formula: ##STR28## in which 2≦n≦10 and a cyclic polysilane skeleton of the formula: ##STR29## wherein n is 5, 6 or 7, the infrared absorbtion spectrum of said organosilicon polymer having an absorbtion range of 450 to 300 cm -1 in the far infrared region.
Claim 2
Dependent Claim
115 words
An organosilicon polymer which comprises a main chain skeleton consisting of the following structural units (A), (B), (C), (D), (E) and (F): ##STR27## wherein R represents CH 3 or H and wherein each such structural unit is bound through its free valencies with a group or formulae A through F, said structural units forming linear, branched and cyclic structures, said main chain skeleton further having a linear polysilane skeleton of the formula: ##STR28## in which 2≦n≦10 and a cyclic polysilane skeleton of the formula: ##STR29## wherein n is 5, 6 or 7, the infrared absorbtion spectrum of said organosilicon polymer having an absorbtion range of 450 to 300 cm -1 in the far infrared region.
Claim 3
Dependent Claim
29 words
The organosilicon polymer of claim 1 having an untraviolet spectrum with an absorption end at 340 to 370 nm and a number average molecular weight of 400 to 5,000.
Claim 4
Dependent Claim
27 words
A process for preparing an organosilicon Polymer having a main chain skeleton which consists of the following structural units (A), (B), (C), (D), (E) and (F): ##STR30##
Claim 5
Dependent Claim
27 words
A process for preparing an organosilicon Polymer having a main chain skeleton which consists of the following structural units (A), (B), (C), (D), (E) and (F): ##STR30##
Claim 6
Dependent Claim
122 words
wherein R represents CH 3 or H and wherein each such structural units is bound through its free valencies with a group selected from formula A through F above, said structural units forming linear, branched and cyclic structures, said main chain skeleton further having a linear polysilane skeleton of the formula: ##STR31## in which 2<n<10 and a cyclic polysilane skeleton of the formula: ##STR32## wherein n is 5, 6 or 7, which comprises adding at least one anhydrous metal halide to a polysilane having the structure ##STR33## the amount of the metal halide being 0.5 to 10% by weight based on the weight of the polysilane, and heating the mixture in an atmosphere inert to the reaction at 250 to 450° C.
Claim 7
Dependent Claim
122 words
wherein R represents CH 3 or H and wherein each such structural units is bound through its free valencies with a group selected from formula A through F above, said structural units forming linear, branched and cyclic structures, said main chain skeleton further having a linear polysilane skeleton of the formula: ##STR31## in which 2<n<10 and a cyclic polysilane skeleton of the formula: ##STR32## wherein n is 5, 6 or 7, which comprises adding at least one anhydrous metal halide to a polysilane having the structure ##STR33## the amount of the metal halide being 0.5 to 10% by weight based on the weight of the polysilane, and heating the mixture in an atmosphere inert to the reaction at 250 to 450° C.
Claim 8
Dependent Claim
49 words
The process of claim 3 wherein the metal halide is at least one compound selected from the group consisting of halides of metals of Groups II (alkaline earth metals and zinc-group metals), III, IV (excepting carbon), VIII (iron-group metals), Vb VIb and VIIb, and antimony halides and bismuth halides.
Claim 9
Dependent Claim
98 words
The process of claim 3 wherein the metal halide is selected from the group consisting of BeCl 2 , SrCl 2 , NdCl 3 , ThCl 4 , TiCl 4 , ZrCl 4 , HfCl 4 , VCl 3 , VCl 4 , NbCl 5 , TaCl 5 , CrCl 3 , MnCl 2 , FeCl 3 , CoCl 2 , ZnCl 2 , AlCl 3 , GaCl 3 , TlCl, SiCl 4 , GeCl 4 , SnCl 4 , PbCl 2 , SbCl 5 , SbCl 3 , BiCl 3 , AlBr 3 and GaBr 3 .
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