US3968075A
Expired / Lapsed
US
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Molding composition and articles molded therefrom
Assignee: Microporous Products LP
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Filing: 1973-07-27
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Granted: 1976-07-06
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Expires: 1993-07-27
Abstract
Abstract Disclosed herein is a molding composition comprising rubber hydrocarbon polymer and a filler of finely divided petroleum coke.
Inventors
- 👤 Edward I. Doucette
- 👤 Robert W. Leiterman
- 👤 Wesley C. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:30
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; H; H01; H01M; H01M50/00; H01M50/10; H01M50/116; H01M50/117; H01M50/121; H01M50/122; H01M50/131; H01M50/134; H01M50/136; H01M50/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
A curable composition for producing a battery container or cover therefor having improved combined properties of surface hardness, impact strength, and flexural modulus, said composition consisting essentially of a mixture of: rubber hydrocarbon polymer selected from the class consisting of natural rubber, copolymers of butadiene styrene or butadiene acrylonitrile, or compatible mixtures of natural rubber and/or said copolymers, the content of said rubber hydrocarbon polymer being about 9% of the composition by weight; a filler consisting of finely divided petroleum coke, said filler making up about 75% of the composition by weight; sulfur in an amount by weight being about 13% of the rubber hydrocarbon polymer content; an accelerator making up about 0.27% of the composition by weight; the remainder of the composition being made up of suitable quantities of activator and plasticizer.
Claim 2
Dependent Claim
133 words
A curable composition for producing a battery container or cover therefor having improved combined properties of surface hardness, impact strength, and flexural modulus, said composition consisting essentially of a mixture of: rubber hydrocarbon polymer selected from the class consisting of natural rubber, copolymers of butadiene styrene or butadiene acrylonitrile, or compatible mixtures of natural rubber and/or said copolymers, the content of said rubber hydrocarbon polymer being about 9% of the composition by weight; a filler consisting of finely divided petroleum coke, said filler making up about 75% of the composition by weight; sulfur in an amount by weight being about 13% of the rubber hydrocarbon polymer content; an accelerator making up about 0.27% of the composition by weight; the remainder of the composition being made up of suitable quantities of activator and plasticizer.
Claim 3
Dependent Claim
151 words
A curable composition for producing a battery container or cover therefor having improved combined properties of surface hardness, impact strength, and flexural modulus, said composition consisting essentially of a mixture of: rubber hydrocarbon polymer selected from the class consisting of natural rubber, copolymers of butadiene styrene or butadiene acrylonitrile, or compatible mixtures of natural rubber and/or said copolymers, the content of said rubber hydrocarbon polymer ranging from about 10.5 to about 11.5% by weight of the composition; a filler consisting of finely divided petroleum coke, said filler making up from about 65 to about 75% of the weight of the composition; sulfur in the amount by weight ranging from about 19 to about 22% of the rubber hydrocarbon polymer content; an accelerator in the range from about 0.25 to about 0.35% of the composition by weight; the remainder of the composition being made up of suitable quantities of activator and plasticizer.
Claim 4
Dependent Claim
151 words
A curable composition for producing a battery container or cover therefor having improved combined properties of surface hardness, impact strength, and flexural modulus, said composition consisting essentially of a mixture of: rubber hydrocarbon polymer selected from the class consisting of natural rubber, copolymers of butadiene styrene or butadiene acrylonitrile, or compatible mixtures of natural rubber and/or said copolymers, the content of said rubber hydrocarbon polymer ranging from about 10.5 to about 11.5% by weight of the composition; a filler consisting of finely divided petroleum coke, said filler making up from about 65 to about 75% of the weight of the composition; sulfur in the amount by weight ranging from about 19 to about 22% of the rubber hydrocarbon polymer content; an accelerator in the range from about 0.25 to about 0.35% of the composition by weight; the remainder of the composition being made up of suitable quantities of activator and plasticizer.
Claim 5
Independent Claim
171 words
The method of producing a battery container or cover therefor having improved combined properties of surface hardness, impact strength, and flexural modulus comprising the steps of forming a curable composition consisting essentially of the following mixture: a. rubber hydrocarbon polymer selected from the class consisting of natural rubber, copolymers of butadiene styrene or butadiene acrylonitrile, or compatible mixtures of natural rubber and/or said copolymers, the content of said rubber hydrocarbon polymer ranging from about 8 to about 25% by weight of the composition; b. a filler consisting of finely divided petroleum coke, said filler making up from about 65 to about 75% of the weight of the composition; c. sulfur in an amount by weight ranging from about 12 to about 22% of the rubber hydrocarbon polymer content; d. an accelerator in an amount by weight ranging from about .25 to about .35% by weight of the composition; e. suitable quantities of activator and plasticizer; and molding said composition under heat and pressure to form said battery container or cover therefor.
Claim 6
Independent Claim
171 words
The method of producing a battery container or cover therefor having improved combined properties of surface hardness, impact strength, and flexural modulus comprising the steps of forming a curable composition consisting essentially of the following mixture: a. rubber hydrocarbon polymer selected from the class consisting of natural rubber, copolymers of butadiene styrene or butadiene acrylonitrile, or compatible mixtures of natural rubber and/or said copolymers, the content of said rubber hydrocarbon polymer ranging from about 8 to about 25% by weight of the composition; b. a filler consisting of finely divided petroleum coke, said filler making up from about 65 to about 75% of the weight of the composition; c. sulfur in an amount by weight ranging from about 12 to about 22% of the rubber hydrocarbon polymer content; d. an accelerator in an amount by weight ranging from about .25 to about .35% by weight of the composition; e. suitable quantities of activator and plasticizer; and molding said composition under heat and pressure to form said battery container or cover therefor.
Claim 7
Dependent Claim
11 words
The cured molded battery container or cover therefor of claim 3.
Claim 8
Dependent Claim
37 words
The invention of claim 4 wherein the battery container or cover therefor has a hardness of about 59 Shore D, an impact strength of at least 5 units, and a flexural modulus of at least 5 units.
Claim 9
Dependent Claim
137 words
A curable composition for producing a battery container or cover therefor having improved combined properties of surface hardness, impact strength and flexural modulus, said composition consisting essentially of a mixture of: rubber hydrocarbon polymer selected from the class consisting of natural rubber, copolymers of butadiene styrene or butadiene acrylonitrile, or compatible mixtures of natural rubber and/or said copolymers; the content of said rubber hydrocarbon polymer being about 8-25% by weight of the composition; a filler consisting of finely divided petroleum coke making up from about 65-75% of the weight of the composition; sulfur in an amount by weight ranging from about 12-22% of the rubber hydrocarbon content; and an accelerator in an amount ranging from about .25-.35% of the composition by weight; the remainder of the composition being made up of suitable quantities of activator and plasticizer.
Claim 10
Dependent Claim
137 words
A curable composition for producing a battery container or cover therefor having improved combined properties of surface hardness, impact strength and flexural modulus, said composition consisting essentially of a mixture of: rubber hydrocarbon polymer selected from the class consisting of natural rubber, copolymers of butadiene styrene or butadiene acrylonitrile, or compatible mixtures of natural rubber and/or said copolymers; the content of said rubber hydrocarbon polymer being about 8-25% by weight of the composition; a filler consisting of finely divided petroleum coke making up from about 65-75% of the weight of the composition; sulfur in an amount by weight ranging from about 12-22% of the rubber hydrocarbon content; and an accelerator in an amount ranging from about .25-.35% of the composition by weight; the remainder of the composition being made up of suitable quantities of activator and plasticizer.
Claim 11
Dependent Claim
14 words
A battery container or cover therefor molded from the curable composition of claim 6.
Claim 12
Dependent Claim
16 words
The invention defined in claim 6 wherein said accelerator is of the aldehyde-amine type or diphenylguanidine.
Claim 13
Dependent Claim
29 words
The invention defined in claim 6 wherein about 95% of said finely divided petroleum coke passes through a 200 mesh screen and about 85% through a 325 mesh screen.
References Cited (Backward Citations)
US2883358A
Cited
US3359229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |