Patent ID: 11932761
Assignee: COVESTRO LLC
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. An isocyanate-reactive composition, comprising:
(a) a polyol blend comprising 1 to 20% by weight, based on the total weight of the polyol blend, of an alkanolamine-initiated polyether polyol having an OH number of at least 500 mg KOH/g and a functionality of 2.5 to 4, in which the alkanolamine-initiated polyether polyol is a reaction product of an alkanolamine-initiator compound and an alkylene oxide, with the proviso that the alkylene oxide does not include ethylene oxide;
(b) a blowing agent composition comprising:
(1) a hydrochlorofluoroolefin; and
(2) a carbon dioxide generating chemical blowing agent; and

(c) a catalyst composition comprising:
(1) a gel catalyst comprising an arylalkyl tertiary amine, an aryl tertiary amine, or a mixture thereof that is present in an amount of at least 1% by weight, based on the total weight of the polyol blend; and
(2) a blow catalyst, wherein the blow catalyst and gel catalyst are present in a relative ratio, by weight, of at least 1:1.