US4158617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation cured and monomer modified silicon elastomers
Assignee: Motors Liquidation Co
•
Filing: 1976-03-08
•
Granted: 1979-06-19
•
Expires: 1996-03-08
Abstract
Abstract In accordance with a preferred embodiment of this invention, a tear resistant silicone elastomer, which has improved elongation properties, is produced. This elastomer is the radiation induced reaction product of a noncured methyl vinyl silicone resin (VMQ) and uniformly dispersed therein a blend of a polyfunctional acrylic crosslinking monomer and a filler.
Inventors
- 👤 Roger J. Eldred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:27
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/12; C08F283/124
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
93 words
An elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ), from about 2 to about 8 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylates and a filler, said monomer and filler being thoroughly blended prior to the preparation of said uniform mixture, said elastomer having a "cure factor" of less than 45.
Claim 2
Dependent Claim
93 words
An elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ), from about 2 to about 8 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylates and a filler, said monomer and filler being thoroughly blended prior to the preparation of said uniform mixture, said elastomer having a "cure factor" of less than 45.
Claim 3
Dependent Claim
102 words
A tear resistant elastomer having improved elongation properties, said elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylates and a filler, said monomer and filler being thoroughly blended prior to the preparation of said uniform mixture, said elastomer having a "cure factor" less than about 20.
Claim 4
Dependent Claim
102 words
A tear resistant elastomer having improved elongation properties, said elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylates and a filler, said monomer and filler being thoroughly blended prior to the preparation of said uniform mixture, said elastomer having a "cure factor" less than about 20.
Claim 5
Dependent Claim
111 words
A tear resistant silicone elastomer being improved elongation properties, said elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ), and about 10 to 60 parts by weight of a reinforcing filler, said filler being blended with from about 2 to about 6 parts by weight of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylates prior to the preparation of said uniform mixture, said elastomer having a "cure factor" less than about 20.
Claim 6
Dependent Claim
111 words
A tear resistant silicone elastomer being improved elongation properties, said elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ), and about 10 to 60 parts by weight of a reinforcing filler, said filler being blended with from about 2 to about 6 parts by weight of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylates prior to the preparation of said uniform mixture, said elastomer having a "cure factor" less than about 20.
Claim 7
Dependent Claim
108 words
A tear resistant elastomer having improved elongation properties, said elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 50 to about 300 parts of a semi-reinforcing filler, said filler being blended with from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylates prior to the preparation of said uniform mixture, said elastomer having a "cure factor" less than about 20.
Claim 8
Dependent Claim
108 words
A tear resistant elastomer having improved elongation properties, said elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 50 to about 300 parts of a semi-reinforcing filler, said filler being blended with from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylates prior to the preparation of said uniform mixture, said elastomer having a "cure factor" less than about 20.
Claim 9
Dependent Claim
107 words
An article formed from a tear resistant silicone elastomer having improved elongation properties, said elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylate, and a filler, said monomer and filler being thoroughly blended prior to the preparation of said uniform mixture, said elastomer having a "cure factor" less than about 20.
Claim 10
Dependent Claim
107 words
An article formed from a tear resistant silicone elastomer having improved elongation properties, said elastomer comprising the high energy electron beam radiation induced reaction product of a uniform mixture comprising about 100 parts by weight of a silicone elastomer selected from the group consisting of methyl vinyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylate, and a filler, said monomer and filler being thoroughly blended prior to the preparation of said uniform mixture, said elastomer having a "cure factor" less than about 20.
Claim 11
Independent Claim
115 words
A method of forming a tear resistant silicone elastomer having improved elongation properties comprising the steps of: (a) forming a uniform mixture comprising by weight, about 100 parts silicone elastomer selected from the group consisting of vinyl methyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylate, which monomer has been previously blended with a filler; and (b) subjecting said mixture to a high energy electron beam radiation dose of from about 2 to about 8 Mrads, and wherein said method, the "cure factor" of said elastomer does not exceed about 20.
Claim 12
Independent Claim
115 words
A method of forming a tear resistant silicone elastomer having improved elongation properties comprising the steps of: (a) forming a uniform mixture comprising by weight, about 100 parts silicone elastomer selected from the group consisting of vinyl methyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylate, which monomer has been previously blended with a filler; and (b) subjecting said mixture to a high energy electron beam radiation dose of from about 2 to about 8 Mrads, and wherein said method, the "cure factor" of said elastomer does not exceed about 20.
Claim 13
Independent Claim
109 words
A method of forming a silicone elastomer comprising the steps of: (a) forming a uniform mixture comprising by weight, about 100 parts silicone elastomer selected from the group consisting of vinyl methyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 2 to about 8 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylate, which monomer has been previously blended with a filler; and (b) subjecting said mixture to a high energy electron beam radiation dose of from about 2 to about 8 Mrads; and wherein said method, the "cure factor" of said elastomer does not exceed about 45.
Claim 14
Independent Claim
109 words
A method of forming a silicone elastomer comprising the steps of: (a) forming a uniform mixture comprising by weight, about 100 parts silicone elastomer selected from the group consisting of vinyl methyl silicone (VMQ) and phenyl vinyl methyl silicone (PVMQ) and from about 2 to about 8 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethylene glycol dimethacrylate, which monomer has been previously blended with a filler; and (b) subjecting said mixture to a high energy electron beam radiation dose of from about 2 to about 8 Mrads; and wherein said method, the "cure factor" of said elastomer does not exceed about 45.
Claim 15
Independent Claim
115 words
A method of forming a tear resistant silicone elastomer having improved elongation properties comprising the steps of: (a) forming a uniform mixture comprising 100 parts of dimethyl methyl vinyl silicone and from about 10 to about 60 parts of a reinforcing silica filler said filler being blended with from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethacrylate and polyethylene glycol dimethacrylates prior to the preparation of said uniform mixture; and (b) subjecting said mixture to a high energy electron beam radiation dose of from about 2 to 10 Mrads, wherein said method, the "cure factor" of said elastomer does not exceed about 20.
Claim 16
Independent Claim
115 words
A method of forming a tear resistant silicone elastomer having improved elongation properties comprising the steps of: (a) forming a uniform mixture comprising 100 parts of dimethyl methyl vinyl silicone and from about 10 to about 60 parts of a reinforcing silica filler said filler being blended with from about 2 to about 6 parts of a polyfunctional acrylic monomer selected from the group consisting of trimethylolpropanetrimethacrylate and polyethacrylate and polyethylene glycol dimethacrylates prior to the preparation of said uniform mixture; and (b) subjecting said mixture to a high energy electron beam radiation dose of from about 2 to 10 Mrads, wherein said method, the "cure factor" of said elastomer does not exceed about 20.
References Cited (Backward Citations)
US2763609A
Cited
US3632399A
Cited
US3627836A
Cited
US3696068A
Cited
US3865588A
Cited
US3916033A
Cited
US3723167A
Cited
US4014851A
Cited
US4026826A
Cited
US4016333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |