Patent US3960804A successfully refreshed from Google Patents.
US3960804A
Expired / Lapsed
US
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Method of making silicone polymer with fillers dispersed therein and using same to make silicone rubber
Assignee: Individual
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Filing: 1974-09-25
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Granted: 1976-06-01
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Expires: 1994-09-25
Abstract
Abstract A silicone polymer and fillers are mixed in a high-intensity mixer until the fillers are dispersed in the silicone polymer, and the resulting dispersion is then compounded with other compounding ingredients to obtain a silicone rubber having improved physical properties.
Inventors
- 👤 Maurice A. Minuto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:00
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/203; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
A process for producing a homogeneous mass of silicone polymer having filler particles dispersed therein, which process comprises mixing said silicone polymer with said filler at elevated temperatures between about 0°F. and about 350°F., in a high-intensity mixer, said mixing being carried out for a period of time sufficient to disperse said filler particles in said silicone polymer such that said polymer becomes a continuous phase with said filler particles dispersed therethrough as the discontinuous phase.
Claim 2
Dependent Claim
76 words
A process for producing a homogeneous mass of silicone polymer having filler particles dispersed therein, which process comprises mixing said silicone polymer with said filler at elevated temperatures between about 0°F. and about 350°F., in a high-intensity mixer, said mixing being carried out for a period of time sufficient to disperse said filler particles in said silicone polymer such that said polymer becomes a continuous phase with said filler particles dispersed therethrough as the discontinuous phase.
Claim 3
Dependent Claim
13 words
A process as in claim 1 wherein said silicone polymer is an organopolysiloxane.
Claim 4
Dependent Claim
13 words
A process as in claim 2 wherein said organopolysiloxane is a hologenated dimethylpolysiloxane.
Claim 5
Dependent Claim
77 words
A process for producing a homogeneous mass of silicone polymer having filler particles dispersed therein, which process comprises mixing said silicone polymer with said filler at elevated temperatures between about 0°F. and about 350°F., in a high-intensity mixer, said mixing being carried out for a period of time sufficient to disperse said filler particles in said silicone polymer such that said silicone polymer becomes a continuous phase with said filler particles dispersed therethrough as the discontinuous phase.
Claim 6
Dependent Claim
77 words
A process for producing a homogeneous mass of silicone polymer having filler particles dispersed therein, which process comprises mixing said silicone polymer with said filler at elevated temperatures between about 0°F. and about 350°F., in a high-intensity mixer, said mixing being carried out for a period of time sufficient to disperse said filler particles in said silicone polymer such that said silicone polymer becomes a continuous phase with said filler particles dispersed therethrough as the discontinuous phase.
Claim 7
Dependent Claim
13 words
A process as in claim 4 wherein said silicone polymer is an organopolysiloxane.
Claim 8
Dependent Claim
13 words
A process as in claim 5 wherein said organopolysiloxane is a halogenated dimethylpolysiloxane.
Claim 9
Dependent Claim
104 words
A process for making silicone rubber compound having improved physical properties which process comprises (a) mixing, in a high-intensity mixer, and at elevated temperatures between about 0°F. and 350°F., a silicone polymer with from about 10 to about 100 parts of a reinforcing filler, and from about 15 to about 500 parts of an extending filler, per part of said silicone polymer, said mixing being carried out for a period of time sufficient to disperse said reinforcing filler and said extending filler in said silicone polymer such that said silicone polymer becomes a continuous phase with said fillers dispersed therethrough as discontinuous particulate matters.
Claim 10
Dependent Claim
104 words
A process for making silicone rubber compound having improved physical properties which process comprises (a) mixing, in a high-intensity mixer, and at elevated temperatures between about 0°F. and 350°F., a silicone polymer with from about 10 to about 100 parts of a reinforcing filler, and from about 15 to about 500 parts of an extending filler, per part of said silicone polymer, said mixing being carried out for a period of time sufficient to disperse said reinforcing filler and said extending filler in said silicone polymer such that said silicone polymer becomes a continuous phase with said fillers dispersed therethrough as discontinuous particulate matters.
Claim 11
Dependent Claim
13 words
A process as in claim 7 wherein said silicone polymer is an organopolysiloxane.
Claim 12
Dependent Claim
13 words
A process as in claim 8 wherein said organopolysiloxane is a halogenated dimethylpolysiloxane.
References Cited (Backward Citations)
US3839280A
Cited
US3824208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |