US4814418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorosilicone polymer, processes for the production thereof and composition containing it
Assignee: AGC Inc
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Filing: 1987-08-07
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Granted: 1989-03-21
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Expires: 2007-08-07
Abstract
Abstract A fluorosilicone polymer comprising from 30 to 99.95 mol % of units of a cyclic trisiloxane of the formula (a) -RfCH2CH2(R1)SiO-3, from 0.05 to 10 mol % of units of a cyclic siloxane of the formula (b) -R2R3SiO-m, and from 0 to 69.95 mol % of units of a cyclic siloxane of the formula (c) -R4R5SiO-n, wherein each of R1, R3, R4 and R5 is a monovalent organic group, Rf is a perfluoroalkyl group having from 4 to 6 carbon atoms, R2 is an alkenyl group, and each of m and n is an integer of from 3 to 6.
Inventors
- 👤 Haruhisa Miyake
- 👤 Seiji Shin-ya
- 👤 Yutaka Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:43
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/24; C08G77/06; C08G77/08; C08G77/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
A fluorosilicone polymer, comprising: the polymerization reaction product of from 30 to 99.95 mol % of a cyclic trisiloxane of the formula (a) --R f CH 2 CH 2 (R 1 )SiO] 3 , from 0.05 to 10 mol % of a cyclic siloxane of the formula (b) 'R 2 R 3 SiO] m , and from 5 to 69.95 mol % of a cyclic siloxane of the formula (c) --CF 3 CH 2 CH 2 (R 4 )SiO] n , wherein each of R 1 , R 3 and R 4 is a monovalent organic group, R f is a perfluoroalkyl group having from 4 to 6 carbon atoms, R 2 is an alkenyl group and each of m and n is an integer of from 3 to 6.
Claim 2
Dependent Claim
130 words
A fluorosilicone polymer, comprising: the polymerization reaction product of from 30 to 99.95 mol % of a cyclic trisiloxane of the formula (a) --R f CH 2 CH 2 (R 1 )SiO] 3 , from 0.05 to 10 mol % of a cyclic siloxane of the formula (b) 'R 2 R 3 SiO] m , and from 5 to 69.95 mol % of a cyclic siloxane of the formula (c) --CF 3 CH 2 CH 2 (R 4 )SiO] n , wherein each of R 1 , R 3 and R 4 is a monovalent organic group, R f is a perfluoroalkyl group having from 4 to 6 carbon atoms, R 2 is an alkenyl group and each of m and n is an integer of from 3 to 6.
Claim 3
Dependent Claim
19 words
The fluorosilicone polymer according to claim 1, which has a viscosity of at least 1,000,000 centipoise at 25° C.
Claim 4
Dependent Claim
29 words
The fluorosilicone polymer according to claim 1, wherein each of R 1 , R 3 and R 4 is a methyl group, an ethyl group or a phenyl group.
Claim 5
Dependent Claim
14 words
The fluorosilicone polymer according to claim 1, wherein R 2 is a vinyl group.
Claim 6
Dependent Claim
34 words
The fluorosilicone polymer according to claim 1, wherein the proportion of the units of a cyclic siloxane the formula (b) R 2 R 3 SiO m , is from 0.1 to 5 mol %.
Claim 7
Dependent Claim
15 words
The fluorosilicone polymer according to claim 1, wherein each of m and n is 3.
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