Process for preparing polyurethane with integral skin

Details Process for preparing polyurethane with integral skin Process for preparing polyurethane with integral skin

1977-03-11

1979-04-17

Cookeram, H. S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521121, 521124, 521125, 521128, 521129, 260 18TN, C08G 1814, C08G 1818, C08G 1822, C08G 1826

Patent

active

041502060

ABSTRACT:
A process for preparing polyurethane with integral skin, wherein a composition comprising following ingredients: polyol, polyisocyanate, at most one part by weight of water to 100 parts by weight of polyol and catalyst, is reacted in a mould so that a polyurethane is formed, characterized in that one uses a polyisocyanate the NCO groups of which are not directly bonded to an aromatic group and, as catalyst, at least one of the following four synergistic combinations:

REFERENCES:
patent: 3422036 (1969-01-01), Ellegast et al.
patent: 3476933 (1969-11-01), Mendelsohn
patent: 3645924 (1972-02-01), Fogiel
patent: 3655597 (1972-04-01), Strassel
patent: 3769244 (1973-10-01), Hashimoto et al.
patent: 3814707 (1974-06-01), Moeller et al.
patent: 3993608 (1976-11-01), Wells
patent: 4006124 (1977-01-01), Welte et al.
patent: 4025466 (1977-05-01), Jourquin et al.

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