Patent EP0052469A1 successfully refreshed from Google Patents.
EP0052469A1
Expired / Lapsed
EP
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Thermoplastic elastomer and electrical plug or connector made therewith
Assignee: Uniroyal Chemical Co Inc
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Filing: 1981-11-09
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Granted: —
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Expires: 2001-11-09
Abstract
Abstract A thermoplastic elastomeric, uncured or partially cured, composition of EPDM, polypropylene, extender oil and inorganic filler useful for making electrical cords and fittings.
Inventors
- 👤 Robert S. Drzal
- 👤 Charles D. Shedd
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 21:05
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K5/00; C08K5/04; C08K5/14; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/16; C08L91/00; C08L2312/00; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
146 words
A thermoplastic elastomeric composition suitable for making electrical plugs, connectors and cables or the like comprising a blend of: (a) ethylene-propylene-non-conjugated diene terpolymer rubber having an ethylene content of from 70 to 85 per cent by weight and a gel content of from 10 to 45 per cent by weight measured in cyclohexane at room temperature; (b) an essentially crystalline propylene polymer; (c) a naphthenic or paraffinic extender oil; and (d) an inorganic filler suitable to absorb at least a portion of said extender oil (c); wherein the weight ratio of (a)/(b) is from 90/10 to 25/75, the concentration of (c) is from 20 to 100 parts per 100 parts by weight of (a) plus (b), the concentration of (d) is from 10 to 100 parts per 100 parts by weight of (a) plus (b) , and the weight ratio of (c)/(d) does not exceed 2.5/1.
Claim 2
Dependent Claim
146 words
A thermoplastic elastomeric composition suitable for making electrical plugs, connectors and cables or the like comprising a blend of: (a) ethylene-propylene-non-conjugated diene terpolymer rubber having an ethylene content of from 70 to 85 per cent by weight and a gel content of from 10 to 45 per cent by weight measured in cyclohexane at room temperature; (b) an essentially crystalline propylene polymer; (c) a naphthenic or paraffinic extender oil; and (d) an inorganic filler suitable to absorb at least a portion of said extender oil (c); wherein the weight ratio of (a)/(b) is from 90/10 to 25/75, the concentration of (c) is from 20 to 100 parts per 100 parts by weight of (a) plus (b), the concentration of (d) is from 10 to 100 parts per 100 parts by weight of (a) plus (b) , and the weight ratio of (c)/(d) does not exceed 2.5/1.
Claim 3
Dependent Claim
16 words
A composition as claimed in claim 1 in which the said extender oil (c) is paraffinic.
Claim 4
Dependent Claim
19 words
A composition as claimed in claim 1 or claim 2 in which the said propylene polymer (b) is polypropylene.
Claim 5
Dependent Claim
24 words
A composition as claimed in any one of the preceding claims wherein the weight ratio of (a) to (b) is from 80/20 to 40/60.
Claim 6
Dependent Claim
19 words
A composition as claimed in any one of the preceding claims in which the said filler (d) is talc.
Claim 7
Dependent Claim
20 words
A composition as claimed in any one of the preceding claims in which the said filler (d) is calcium carbonate.
Claim 8
Dependent Claim
16 words
A composition as claimed in any one of the preceding claims, the composition being partially cured.
Claim 9
Dependent Claim
25 words
An electrical plug or connector made from a composition according to any one of claims 1 to 5, wherein the said filler (d) is talc.
Claim 10
Dependent Claim
27 words
An electrical cord or cable jacketing made from a composition according to any one of claims 1 to 5, wherein the said filler (d) is calcium carbonate.
References Cited (Backward Citations)
US3470127A
Cited
FR2323734A1
Cited
US4130535A
Cited
GB1550207A
Cited
FR2365601A1
Cited
US4272431A
Cited
FR2374355A1
Cited
US4148780A
Cited
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