Shrinkable thermoplastic vulcanizate and method and article
US11186753B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Aug 1, 2017 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Jul 27, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2491/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process of heat shrinking an article is provided. The process includes shaping a thermoplastic vulcanizate (TPV) into an article, the TPV having: a partially vulcanized rubber dispersed in a continuous thermoplastic phase, wherein more than 5 wt % of the rubber is extractable in boiling xylene, and wherein the thermoplastic phase comprises a thermoplastic resin having a Tm>110° C. and a propylene-based elastomer (PBE) having a Tm<110° C.; and heating the article to a temperature between about 100° C. and 250° C. to shrink the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.