Claims
- 1. A thermoplastic polyurethane elastomer blend comprising at least about 30 to at most about 40 vol % of a polyurethane component and at least about 60 to at most about 70 vol % of a nitrile rubber component, said blend having a Shore A hardness of about 55 to 70 within added plasticizer; said polyurethane component including at least about 50 wt % polyisocyanate; said nitrile rubber component including about 34 mol % acrylonitrile.
- 2. The thermoplastic polyurethane elastomer blend recited in claim 1 wherein:
- said polyurethane component has a Shore A hardness about 80 to 90, includes about 50% wt. polyisocyanate and comprises about 30 vol % of the blend;
- said nitrile rubber component has a viscosity of M.sub.L 1+4,100.degree. C.=50 and comprises about 67 vol % of the blend; and
- further comprising about 3 vol % of an auxiliary agent, said auxiliary agent including at least one of an anti-ageing agent, an accelerator, and a cross-linking agent.
- 3. The thermoplastic polyurethane elastomer blend recited in claim 2, wherein:
- said anti-ageing agents are pentaerythritol-tetrakis- (3-3', 5'-di-t-butyl-4'-hydroxyphenyl)propionate, 0.6 parts; said accelerator is triallylcyanurate, 0.2 parts; and
- said cross-linking agent is 1,3-bis-(t-butyl-peroxy-isopropyl) benzol, 1.0 part.
- 4. The thermoplastic polyurethane elastomer blend recited in claim 1 wherein:
- said polyurethane component has a Shore A hardness of about 80 to 90, includes about 50% wt. polyisocyanate and comprises about 35 vol % of the blend;
- said nitrile rubber component has a viscosity of M.sub.L 1+4, 100.degree. C.=50 and comprises about 62 vol % of the blend; and
- further comprising about 3 vol % of an auxiliary agent, said auxiliary agent including at least one of an anti-ageing agent, an accelerator, and a cross-linking agent.
- 5. The thermoplastic polyurethane elastomer blend recited is claim 1 further comprising up to about 3 vol % auxiliary agents.
- 6. An injection molded article comprised of the thermoplastic polyurethane elastomer blend of claim 1.
Priority Claims (1)
Number |
Date |
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Kind |
3834103 |
Oct 1988 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/417,881, filed on Oct. 6, 1989, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0012343 |
Jun 1980 |
EPX |
Continuations (1)
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Number |
Date |
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Parent |
417881 |
Oct 1989 |
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