US4238376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of ethylene-propylene-diene ionic polymers and poly(alpha-methylstyrene)
Assignee: BP Corp North America Inc
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Filing: 1978-12-11
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Granted: 1980-12-09
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Expires: 1998-12-11
Abstract
Abstract Ethylene-propylene-diene ionic polymer compositions useful in injection molding, extrusion and other plastic processing techniques for fabricated products comprising an ionic elastomeric polymer and poly(alpha-methylstyrene).
Inventors
- 👤 Alfred P. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:38
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/26; C08L23/02; C08L23/04; C08L23/08; C08L23/32; C08L25/00; C08L25/02; C08L25/16; Y; Y10; Y10S; Y10S260/00; Y10S260/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
A composition comprising an ethylene-propylene-diene ionic terpolymer comprising from 5 to 200 parts per hundred by weight of resin of poly(alpha-methylstyrene) per 100 parts by weight of terpolymer wherein the ionic group in said terpolymer comprises one member selected from the group consisting of sulfonic groups, carboxylate groups and phosphonate groups and at least some of said ionic groups are neturalized with a neturalizing agent and wherein the molecular weight of said poly(alpha-methylstyrene) is within the range of from about 600 to about 1000.
Claim 2
Dependent Claim
84 words
A composition comprising an ethylene-propylene-diene ionic terpolymer comprising from 5 to 200 parts per hundred by weight of resin of poly(alpha-methylstyrene) per 100 parts by weight of terpolymer wherein the ionic group in said terpolymer comprises one member selected from the group consisting of sulfonic groups, carboxylate groups and phosphonate groups and at least some of said ionic groups are neturalized with a neturalizing agent and wherein the molecular weight of said poly(alpha-methylstyrene) is within the range of from about 600 to about 1000.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the said ionic group is a sulfonic group.
Claim 4
Dependent Claim
57 words
The composition of claim 2 wherein the ionic groups are substantially neutralized by conversion to a salt, the said salts being prepared from at least one of the metals in Group IA, IIA, IB and IIB of the Periodic Table, and lead, tin and antimony, and ammonium derivatives of carboxylic acids of one to 30 carbon atoms.
Claim 5
Dependent Claim
15 words
The composition of claim 3 wherein the ionic groups are converted to a zinc salt.
Claim 6
Dependent Claim
33 words
The composition of claim 1 wherein the said ionic olefinic polymer has a zinc content of about 0.1 to 3 weight percent and a sulfur content of about 1 to 5 weight percent.
Claim 7
Dependent Claim
25 words
The composition of claim 1 wherein the poly-(alpha-methylstyrene) is present within the range of from 50 to 100 parts per hundred by weight of resin.
Claim 8
Dependent Claim
41 words
The composition of claim 1 wherein butylene polymers are present within the range of from about 50 to 150 parts per hundred by weight of resin, the said butylene polymers having a molecular weight range of from about 400 to 1300.
References Cited (Backward Citations)
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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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |