Process for preparation of polyurethane foam handle having woodg

Details Process for preparation of polyurethane foam handle having woodg Process for preparation of polyurethane foam handle having woodg

1986-05-27

1988-08-30

Anderson, Philip

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

264 455, 264129, 264DIG83, 521 51, 521137, C08J 934, C08J 940, C08G 1872

Patent

active

047676647

ABSTRACT:
A process for preparing a polyurethane foam handle having a woodgrain finish is disclosed, which comprises injecting a composition comprising a polyol, a polyisocyanate, a crosslinking agent, a catalyst, a foam stabilizer and a blowing agent into a mold having a shape of a handle, blowing and curing the composition and applying a woodgrain finish coating on the formed handle. In this process, a polyol comprising 50 to 100 parts by weight of a polyether polyol having at least two OH groups in the molecule and having a molecular weight of 1,000 to 10,000 and 0 to 50 parts by weight of a polymer polyol having a hydroxyl number of 20 to 50, which is formed by graft-polymerizing a vinyl compound onto a polyether polyol, is used as the polyol, and 10 to 30 parts by weight of a polyol having 2 to 4 OH groups in the molecule and having a hydroxyl number of 800 to 2,000 is used as the crosslinking agent. The polyurethane foam handle having a woodgrain finish, which is prepared according to this process, is excellent in touch and appearance and has high impact resistance and high safety.

REFERENCES:
patent: 3561181 (1971-02-01), Bassett
patent: 3641228 (1972-02-01), Fleck
patent: 4102833 (1978-07-01), Salisbury

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