Method for preparing and applying a sprayable, light stable poly

Details Method for preparing and applying a sprayable, light stable poly Method for preparing and applying a sprayable, light stable poly

1995-06-07

1997-08-12

Seidleck, James J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521127, 521 475, 528 44, 528 49, 528 52, 528 58, 528 65, 427421, 427426, C08J 900

Patent

active

056566778

ABSTRACT:
A method for preparing a light stable polyurethane, sprayable by means of a spray pistol, wherein use is made of an active hydrogen containing compound, wherein the functional groups consist for at least 50% of an active CH.sub.2 OH, NH and/or NH.sub.2 group, the functionality of which varies from 2 to 8 and the equivalent weight of which is comprised between 100 and 3500, together with 2 to 300 parts, per 100 parts of said compounds of a chain extender and/or a cross-linker, the functional groups of which are OH groups, at least 50% of which are primary OH groups, the equivalent weight of which is less than 100 and the functionality of which varies from 2 to 6, and with a catalytic system which comprises at least an organic lead, bismuth and/or tin (IV) compound and at least an amine initiator, having a functionality of 2 to 6, an equivalent weight lower than or equal to 200, and at least one aliphatic NH.sub.2 or NH group.

REFERENCES:
patent: 3772218 (1973-11-01), Lamplugh et al.
patent: 4150206 (1979-04-01), Jourquin et al.
patent: 4292411 (1981-09-01), Jourquin et al.
patent: 4517313 (1985-05-01), Nakatani
patent: 4581387 (1986-04-01), Werner et al.
patent: 4695618 (1987-09-01), Mowrer
patent: 4748192 (1988-05-01), Smith

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