US5204436A
Expired / Lapsed
US
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Curable silicone composition and its cured product
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1991-08-02
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Granted: 1993-04-20
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Expires: 2011-08-02
Abstract
Abstract A curable silicone composition comprising: (A) an alkenyl group-containing organopolysiloxane containing silicon-bonded alkenyl groups and a silicon-bonded fluorine-containing substituent having the general formula (1): Rf--O--Y-- (1) wherein Rf is a perfluoroalkenyl group having 5 to 10 carbon atoms, and Y represents a divalent organic group, (B) an organohydrogenpolysiloxane, and (C) a catalyst for addition reaction between components (A) and (B). This composition can form a cured coating which adheres firmly to various substrates and has good release properties, stability in the release properties, water- and oil-repellency, and solvent resistance. The coating exhibits good release properties even against pressure sensitive adhesives comprising a dimetylpolysiloxane.
Inventors
- 👤 Hirofumi Kishita
- 👤 Kouichi Yamaguchi
- 👤 Kouji Takano
- 👤 Shuji Suganuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:42
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/08; C09; C09D; C09D183/00; C09D183/04; C09D183/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
137 words
A curable silicone composition comprising: (A) An alkenyl group-containing organopolysiloxane containing at least two silicon-bonded alkenyl groups and at least one silicon-bonded fluorine-containing substituent having the general formula (1): Rf--O--Y-- (1) wherein Rf is a perfluoroalkenyl group having 5 to 10 carbon atoms, and Y represents a divalent organic group selected from the group consisting of alkylene groups, arylene groups and alkylene-arylene groups, the total amount of said fluorine-containing substituent being 0.5 mol % or more based on all of the organic groups bonded to silicon atoms, (B) an organohydrogenpolysiloxane containing at least two silicon-bonded hydrogen atoms, and (C) a catalyst for addition reaction between silicon-bonded alkenyl groups and silicon-bonded hydrogen atoms, the molar ratio of the silicon-bonded hydrogen atoms of said component (B) to the silicon-bonded alkenyl groups of said component (A) being 0.5 or more.
Claim 2
Dependent Claim
137 words
A curable silicone composition comprising: (A) An alkenyl group-containing organopolysiloxane containing at least two silicon-bonded alkenyl groups and at least one silicon-bonded fluorine-containing substituent having the general formula (1): Rf--O--Y-- (1) wherein Rf is a perfluoroalkenyl group having 5 to 10 carbon atoms, and Y represents a divalent organic group selected from the group consisting of alkylene groups, arylene groups and alkylene-arylene groups, the total amount of said fluorine-containing substituent being 0.5 mol % or more based on all of the organic groups bonded to silicon atoms, (B) an organohydrogenpolysiloxane containing at least two silicon-bonded hydrogen atoms, and (C) a catalyst for addition reaction between silicon-bonded alkenyl groups and silicon-bonded hydrogen atoms, the molar ratio of the silicon-bonded hydrogen atoms of said component (B) to the silicon-bonded alkenyl groups of said component (A) being 0.5 or more.
Claim 3
Dependent Claim
105 words
The composition according to claim 1, wherein the alkenyl group-containing organopolysiloxane (A) is represented by the general formula (2): ##STR16## wherein R 1 is C 2 to C 5 alkenyl group, R 2 may be the same or different and are each a hydrogen atom, A C 1 to C 8 alkyl group or a phenyl group, Rf is a perfluoroalkenyl group having 5 to 10 carbon atoms and Y represents a divalent organic group selected from the group consisting of alkylene groups, arylene groups and alkylene-arylene groups, and a, x, y and z are an integer of 0≦a≦3, x≧0, y≧0 and z ≧1, respectively.
Claim 4
Dependent Claim
40 words
The composition according to claim 2, wherein in the general formula (2), a is an integer of 1 to 3, x and y are each an integer of 5 to 10,000, and z is an integer of 1 to 3,000.
Claim 5
Dependent Claim
44 words
The composition according to claim 1, wherein Rf contained in the general formula (1) is C n F 2n-1 where n is an integer of 5 to 10, and Y is a group selected from the group consisting of alkylene, arylene and alkylene-arylene groups.
Claim 6
Dependent Claim
36 words
The composition according to claim 1, wherein the amount of said fluorine-containing substituent in component (A) is at least 2 mol % based on all of the organic groups bonded to silicon atoms in component (A).
Claim 7
Dependent Claim
42 words
The composition according to claim 1, wherein the organohydrogenpolysiloxane (B) contains in its molecule at least 3 mol % of the fluorine-containing substituent of the general formula (1) based on all of the organic groups bonded to silicon atoms in component (B).
Claim 8
Dependent Claim
94 words
The composition according to claim 1, wherein the organohydrogenpolysiloxane (B) is represented by the general formula (3): ##STR17## wherein R 2 may be the same or different and are each a hydrogen atom, a C 1 to C 8 alkyl group or a phenyl group, R 3 represents a C 1 -C 8 alkyl group, phenyl group or a fluorine-containing substituent; b is an integer of 1 or more selected so that the number of silicon-bonded hydrogen atoms in the molecule is 2 or more; and C is an integer of 0 or more.
Claim 9
Dependent Claim
30 words
The composition according to claim 1, wherein the ratio of the silicon-bonded alkenyl groups in component (A) to the silicon-bonded hydrogen atoms in component (B) is from 1:0.5 to 1:10.
Claim 10
Dependent Claim
21 words
The composition according to claim 1, wherein the catalyst (C) is platinum, rhodium, ruthenium or iridium, or a compound of these.
Claim 11
Dependent Claim
15 words
A cured product obtained by curing the curable silicone composition as claimed in claim 1.
Claim 12
Dependent Claim
24 words
The composition according to claim 1, wherein Y is selected from the group consisting of --CH 2l --, --CH 2 CH 2 --, ##STR18##
References Cited (Backward Citations)
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