Patent US4089833A successfully refreshed from Google Patents.
US4089833A
Expired / Lapsed
US
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Process aids for fluorosilicone polymers
Assignee: General Electric Co
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Filing: 1977-05-02
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Granted: 1978-05-16
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Expires: 1997-05-02
Abstract
Abstract A process aid for fluorosilicone compositions and polymers to prevent such polymers in the uncured state from sticking or partitioning on processing equipment comprising adding to the fluorosilicone polymer composition from 2 to 25% by weight of a non-halogenated process aid which is a diorganopolysiloxane polymer having a viscosity varying from 100,000 to 10,000,000 centipoise at 25° C. The organo groups in such a polymer are selected from alkyl radicals, vinyl radicals, phenyl radicals and mixtures thereof wherein the vinyl concentration varies from 5 to 25% by weight. In the alternative that may be utlizied at the same concentration a non-halogenated process aid which is a polysiloxane composed of R 2 SiO units and R SiO 3/2 units wherein the polyme has a viscosity in the range of 5 and 10,000 centipose at 25° C and its silanol content varying from .1 to 5% by weight and R is a monovalent hydrocarbon radical.
Inventors
- 👤 Verne G. Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:33
CPC Classifications
F; F03; F03B; F03B13/00; F03B13/12; F03B13/14; F03B13/141; F03B13/142; C; C08; C08G; C08G77/00; C08G77/04; C08L; C08L83/00; C08L83/04; C08L83/08; Y; Y02; Y02E; Y02E10/00; Y02E10/30
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
128 words
A fluorosilicone composition that has superior resistance to sticking to processing equipment, comprising a base diorganopolysiloxane polymer having a viscosity in the range of 500,000 to 200,000,000 centipoise at 25° C wherein the organo groups are selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, vinyl radicals, phenyl radicals and 3,3,3 trifluoropropyl radicals and mixtures thereof wherein the concentrations of the trifluoroproyl radical varies from 5 to 50 mole percent and consisting of non-halogenated process aids, one of which must be a diorganopolysiloxane having a viscosity varying from 100,000 to 10,000,000 centipoise at 25° C wherein the organo groups are selected from alkyl radicals, vinyl radicals, phenyl radicals and mixtures thereof and wherein the vinyl unsaturation varies from 5 to 25 weight percent.
Claim 2
Dependent Claim
128 words
A fluorosilicone composition that has superior resistance to sticking to processing equipment, comprising a base diorganopolysiloxane polymer having a viscosity in the range of 500,000 to 200,000,000 centipoise at 25° C wherein the organo groups are selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, vinyl radicals, phenyl radicals and 3,3,3 trifluoropropyl radicals and mixtures thereof wherein the concentrations of the trifluoroproyl radical varies from 5 to 50 mole percent and consisting of non-halogenated process aids, one of which must be a diorganopolysiloxane having a viscosity varying from 100,000 to 10,000,000 centipoise at 25° C wherein the organo groups are selected from alkyl radicals, vinyl radicals, phenyl radicals and mixtures thereof and wherein the vinyl unsaturation varies from 5 to 25 weight percent.
Claim 3
Dependent Claim
25 words
The composition of claim 1 wherein said process aid is present at a concentration of 2 to 25% by weight based on the base polymer.
Claim 4
Dependent Claim
27 words
The composition of claim 1 wherein in said process aid the vinyl concentration is present only on silicone atoms in the internal portion of the polymer chain.
Claim 5
Dependent Claim
20 words
The composition of claim 3 wherein the vinyl concentration in said process aid varies from 8 to 16% by weight.
Claim 6
Dependent Claim
14 words
The composition of claim 1 wherein therein is additionally present a peroxide curing catalyst.
Claim 7
Dependent Claim
20 words
The composition of claim 1 wherein in said base polymer has a vinyl concentration of 0.01 to 4 mole percent.
Claim 8
Dependent Claim
33 words
The composition of claim 6 wherein there is additionally present a hydride polysiloxane and an effective amount of a platinum catalyst and filler selected from the class consisting of reinforcing and extending fillers.
Claim 9
Dependent Claim
22 words
The composition of claim 5 wherein there is additionally present a filler selected from the class consisting of reinforcing and extending fillers.
Claim 10
Dependent Claim
74 words
A process for improving the processability of fluorosilicone polymers comprising adding to such fluorosilicone polymers from 2 to 25% by weight of a non-halogenated process aid which is a diorganopolysiloxane polymer having a viscosity varying from 100,000 to 10,000,000 centipoise at 25° C wherein the organo groups are selected from alkyl radicals, vinyl radicals, phenyl radicals and mixtures thereof and wherein the vinyl concentration in said polymer varies from 2 to 25% by weight.
Claim 11
Dependent Claim
74 words
A process for improving the processability of fluorosilicone polymers comprising adding to such fluorosilicone polymers from 2 to 25% by weight of a non-halogenated process aid which is a diorganopolysiloxane polymer having a viscosity varying from 100,000 to 10,000,000 centipoise at 25° C wherein the organo groups are selected from alkyl radicals, vinyl radicals, phenyl radicals and mixtures thereof and wherein the vinyl concentration in said polymer varies from 2 to 25% by weight.
Claim 12
Dependent Claim
72 words
The process of claim 9 wherein said fluorosilicone polymer comprises a base diorganopolysiloxane polymer having a viscosity in the range of 500,000 to 200,000,000 centipoise at 25° C wherein the organo groups are selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, vinyl radicals, phenyl radicals and 3,3,3 trifluoropropyl radicals and mixtures thereof wherein the concentration of said trifluoropropyl radicals vary from 5 to 50 mole percent.
Claim 13
Dependent Claim
28 words
The process of claim 10 wherein in said process aid the vinyl concentration is present only on the silicone atoms in the internal portion of the polymer chain.
Claim 14
Dependent Claim
20 words
The process of claim 1 wherein the vinyl concentration in said process aid varies from 8 to 16% by weight.
Claim 15
Dependent Claim
14 words
The process of claim 10 wherein there is additionally present a peroxide curing catalyst.
Claim 16
Dependent Claim
19 words
The process of claim 10 wherein said base polymer has a vinyl concentration of 0.01 to 4 mole percent.
Claim 17
Dependent Claim
29 words
The process of claim 14 wherein there is additionally present a hydride polysiloxane, an effective amount of a platinum catalyst and a filler selected from reinforcing and extending fillers.
Claim 18
Dependent Claim
22 words
The process of claim 13 wherein there is additionally present a filler selected from the class consisting of reinforcing and extending fillers.
Claim 19
Dependent Claim
145 words
A fluorosilicone composition that has superior resistance to sticking to processing equipment comprising a base diorganopolysiloxane polymer having a viscosity in the range of 500,000 to 200,000,000 centipoise at 25° C wherein the organo groups are selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, vinyl radicals, phenyl radicals and 3,3,3 trifluoropropyl radicals and the concentration of said fluoropropyl radicals varies from 5 to 50 mole percent and consisting of non-halogenated process aids, one of which must be a polysiloxane composed of R 2 SiO and R SiO 3/2 units and having a viscosity in the range of 5 to 10,000 centipoise at 25° C, and a silanol content varying from 0.1 to 5% by weight and where R is selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, phenyl and vinyl and mixtures thereof.
Claim 20
Dependent Claim
145 words
A fluorosilicone composition that has superior resistance to sticking to processing equipment comprising a base diorganopolysiloxane polymer having a viscosity in the range of 500,000 to 200,000,000 centipoise at 25° C wherein the organo groups are selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, vinyl radicals, phenyl radicals and 3,3,3 trifluoropropyl radicals and the concentration of said fluoropropyl radicals varies from 5 to 50 mole percent and consisting of non-halogenated process aids, one of which must be a polysiloxane composed of R 2 SiO and R SiO 3/2 units and having a viscosity in the range of 5 to 10,000 centipoise at 25° C, and a silanol content varying from 0.1 to 5% by weight and where R is selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, phenyl and vinyl and mixtures thereof.
Claim 21
Dependent Claim
23 words
The composition of claim 17 wherein the concentration of RSiO 3/2 units in said process aid varies from 4 to 15% by weight.
Claim 22
Dependent Claim
9 words
The composition of claim 18 wherein R is methyl.
Claim 23
Dependent Claim
25 words
The composition of claim 17 wherein said process aid is present at a concentration of 2 to 25% by weight based on the base polymer.
Claim 24
Dependent Claim
23 words
The composition of claim 18 wherein the concentration of RSiO 3/2 units in said process aid varies from 5 to 10% by weight.
Claim 25
Dependent Claim
14 words
The composition of claim 17 wherein therein is additionally present a peroxide curing catalyst.
Claim 26
Dependent Claim
19 words
The composition of claim 17 wherein said base polymer has a vinyl concentration of 0.01 to 4 mole percent.
Claim 27
Dependent Claim
34 words
The composition of claim 23 wherein there is additionally present a hydride polysiloxane and an effective amount of a platinum catalyst and a filler selected from the class consisting of reinforcing and extending fillers.
Claim 28
Dependent Claim
22 words
The composition of claim 22 wherein there is additionally present a filler selected from the class consisting of reinforcing and extending fillers.
Claim 29
Dependent Claim
92 words
A process for improving the processability of fluorosilicone polymers comprising adding to said fluorosilicone polymer from 2 to 25% by weight of non-halogenated process aids, one of which must be a polysiloxane composed of R 2 SiO units and RSiO 3/2 units and having a viscosity in the range of 5 to 10,000 centipoise at 25° C and a silanol content varying from 0.1 to 5% by weight and where R is selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, phenyl and vinyl and mixtures thereof.
Claim 30
Dependent Claim
92 words
A process for improving the processability of fluorosilicone polymers comprising adding to said fluorosilicone polymer from 2 to 25% by weight of non-halogenated process aids, one of which must be a polysiloxane composed of R 2 SiO units and RSiO 3/2 units and having a viscosity in the range of 5 to 10,000 centipoise at 25° C and a silanol content varying from 0.1 to 5% by weight and where R is selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, phenyl and vinyl and mixtures thereof.
Claim 31
Dependent Claim
23 words
The process of claim 26 wherein the concentration of RSiO 3/2 units in said process aid varies from 4 to 15% by weight.
Claim 32
Dependent Claim
9 words
The process of claim 27 wherein R is methyl.
Claim 33
Dependent Claim
69 words
The process of claim 26 wherein said fluorosilicone polymer comprises a base diorganopolysiloxane polymer having a viscosity in the range of 500,000 to 200,000,000 centipoise at 25° C wherein the organo groups are selected from the class consisting of alkyl radicals of 1 to 3 carbon atoms, vinyl radicals, phenyl radicals and 3,3,3 trifluoropropyl radicals and the concentration of the trifluoropropyl radicals vary from 5 to 50 mole percent.
Claim 34
Dependent Claim
25 words
The process of claim 26 wherein said process aid is present at a concentration of 2 to 10% by weight based on the base polymer.
Claim 35
Dependent Claim
23 words
The process of claim 27 wherein the concentration of RSiO 3/2 units in said process aid varies from 5 to 10% by weight.
Claim 36
Dependent Claim
14 words
The process of claim 26 wherein there is additionally present a peroxide curing catalyst.
Claim 37
Dependent Claim
19 words
The process of claim 29 wherein said base polymer has a vinyl concentration of 0.01 to 4 mole percent.
Claim 38
Dependent Claim
34 words
The process of claim 33 wherein there is additionally present a hydride polysiloxane and an effective amount of a platinum catalyst and a filler selected from the class consisting of reinforcing and extending fillers.
Claim 39
Dependent Claim
22 words
The process of claim 32 wherein there is additionally present a filler selected from the class consisting of reinforcing and extending fillers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |