Novel polyisocyanurate catalyst

Details Novel polyisocyanurate catalyst Novel polyisocyanurate catalyst

1980-12-15

1982-01-12

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 528 49, 528 52, C08G 1816

Patent

active

043106340

ABSTRACT:
Polyisocyanurate catalysts are disclosed which have the formula: ##STR1## where R.sub.1 and R.sub.2 are independently selected from alkyl groups of less than about 3 carbon atoms or where R.sub.1 and R.sub.2 together comprise cycloalkyl or morpholino groups and where R.sub.3 is hydrogen or alkyl groups containing less than about 3 carbon atoms. Said catalysts are useful in promoting the reaction between a polyol and an aromatic polyisocyanate to prepare a polymer containing recurring isocyanurate and urethane linkages.

REFERENCES:
patent: 3050475 (1962-08-01), Muller et al.
patent: 3516950 (1970-06-01), Haggis
patent: 3580868 (1971-05-01), Diehr et al.
patent: 3620986 (1971-11-01), Diehr et al.
patent: 3625872 (1971-12-01), Ashida
patent: 3635848 (1972-01-01), Rambosek
patent: 3725319 (1973-04-01), Frisch
patent: 3745133 (1973-07-01), Comunale et al.
patent: 4009307 (1977-02-01), Erikson et al.
Condon et al., J. Am. Chem. Soc., 92, 1970, pp. 6625-6630.

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