Process for producing urethane resin particles for slush molding
US9273188B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Dec 2, 2014 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Dec 2, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is urethane resin particles (C) for slush mold which contain a urethane resin (D) and an additive (N), wherein the particles have a shape factor SF1 of 101 to 200, a shape factor SF2 of 120 to 240, and a central particle diameter of 20 to 500 μm. It is preferred that the urethane resin (D) has a concentration of urea groups of 0.5 to 10% by weight, a total of the concentration of urethane groups and that of the urea groups of 4 to 20% by weight, a melting point of 160 to 260° C. and a glass transition temperature of −65 to 0° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.