EP0499233A2
Expired / Lapsed
EP
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Organopentasiloxane and method for its preparation
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1992-02-12
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Granted: —
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Expires: 2012-02-12
Abstract
Abstract An organopentasiloxane having the formula A-R¹-SiMe₂(OSiMe₂)₃OSiR² (3-n) (OR²) n wherein Me denotes a methyl radical; A is a group selected from the group consisting of methacryloxy, glycidoxy and amino; R¹ is a divalent organic group selected from the group consisting of an alkylene group having at least 2 carbon atoms and an alkyleneoxyalkylene group; R² is independently selected from monovalent hydrocarbon groups free of aliphatically unsaturated bonds; and n is an integer having a value of 1 to 3, and methods for the preparation thereof, are disclosed.
Inventors
- 👤 Tadashi Okawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:22
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C08G77/045
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
78 words
An organopentasiloxane having the formula A-R¹-SiMe₂(OSiMe₂)₃OSiR² (3-n) (OR²) n wherein Me denotes a methyl radical; A is selected from the group consisting of methacryloxy, glycidoxy and amino radicals; R¹ is a divalent organic group selected from the group consisting of an alkylene group having at least 2 carbon atoms and an alkyleneoxyalkylene group; R² is independently selected from monovalent hydrocarbon groups free of aliphatically unsaturated bonds; and n is an integer having a value of 1 to 3.
Claim 2
Independent Claim
137 words
A method for the preparation of an organopentasiloxane having the formula A'-R¹-SiMe₂(OSiMe₂)₃OSiR² (3-n) (OR²) n , wherein Me denotes a methyl radical; A' is selected from the group consisting of methacryloxy and glycidoxy radicals; R¹ is a divalent organic group selected from the group consisting of an alkylene group having at least 2 carbon atoms and an alkyleneoxyalkylene group; R² is independently selected from monovalent hydrocarbon groups free of aliphatically unsaturated bonds; and n is an integer having a value of 1 to 3, which is characterized by an addition reaction, in the presence of a platinum-type catalyst, between an organopentasiloxane having the formula H-SiMe₂(OSiMe₂)₃OSiR² (3-n) (OR²) n , wherein R² and n have their previously defined meanings, and a functional alkene selected from the group consisting of methacryloxy-containing alkene, glycidoxy-containing alkene, methacryloxy-containing alkyleneoxyalkene and glycidoxy-containing alkyleneoxyalkene.
Claim 3
Independent Claim
136 words
A method for the preparation of an organopentasiloxane having the formula A''-R¹-SiMe₂(OSiMe₂)₃OSiR² (3-n) (OR²) n , wherein Me denotes a methyl radical; A'' is an amino group; R¹ is a divalent organic group selected from the group consisting of an alkylene group having at least 2 carbon atoms and an alkyleneoxyalkylene group; R² is independently selected from monovalent hydrocarbon groups free of aliphatically unsaturated bonds; and n is an integer having a value of 1 to 3, which is characterized by an addition reaction, in the presence of a platinum-type catalyst, between an organopentasiloxane having the formula H-SiMe₂(OSiMe₂)₃OSiR² (3-n) (OR²) n , wherein R² and n have their previously defined meanings, and an alkene selected from the group consisting of triorganosilylamino-containing alkene and triorganosilylamino-containing alkyleneoxyalkene and thereafter subjecting the reaction product therefrom to a desilylation reaction.
References Cited (Backward Citations)
No citation records indexed.
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