Polyurethane foams made with blowing catalyst compositions containing primary hydroxyl groups and high ethylenediamine backbones
AssigneeAir Products and Chemicals, Inc.
InventorsJuan Jesus Burdeniuc, Douglas P. Freyberger
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Abstract
A method is provided for preparing polyurethane foams, which comprises contacting at least one organic isocyanate compound, at least one polyol, at least one blowing agent, and a tertiary amine catalyst composition. The catalyst composition has the general formula wherein R1, R2, and Y are, independently, an alkyl group having from one to three carbon atoms or —CH2CH2OH; Z is —CH2CH2OH; and n is an integer from 3 to 7, inclusive. Also provided is a method for catalyzing the reaction between at least one isocyanate compound and at least one active hydrogen-containing compound, such as a polyol and/or a blowing agent.
Claims37
A method to produce a foamed polyurethane comprising:
- contacting
- (a) at least one organic isocyanate compound having an NCO index of about 100 to about 120;
- (b) at least one polymer polyol having a hydroxyl number of about 28-35;
- (c) a blowing agent consisting essentially of water, and (d) a catalyst comprising a blowing catalyst comprising N-(2-hydroxyethyl)-N, N′, N″, N′″, N′″ pentamethyltriethylenetetramine and at least one gelling catalyst;
- and,
- under conditions sufficient for the catalyst to promote a gelling reaction with the isocyanate and a reaction of water with the isocyanate to release carbon dioxide, and wherein the foamed polyurethane comprises a flexible open celled foam.
A method to produce a foamed polyurethane comprising:
- contacting
- (a) at least one organic isocyanate compound;
- (b) at least one base polyol and at least one polymer polyol;
- (c) a blowing agent consisting essentially of water, and
- (d) a catalyst comprising at least one blowing catalyst, at least one gelling catalyst, the reaction product of triethylenetetramine and propylene oxide, and N-(2-hydroxyethyl)-N, N′, N″,N′″, N′″ pentamethyltriethylenetetramine and wherein the foamed polyurethane comprises a flexible open celled polyurethane foam.
A method to produce a foamed polyurethane comprising:
- contacting
- (a) at least one organic isocyanate compound;
- (b) at least one polymer polyol;
- (c) at least one blowing agent consisting essentially of water, and
- (d) a catalyst comprising N-(2-hydroxyethyl)-N, N′,N″,N′″,N′″ pentamethyltriethylenetetramine and at least one N,N-dimethylaminoalkyl urea;
- under conditions sufficient to produce a flexible open celled polyurethane foam.
A foamed polyurethane production method comprising contacting:
- (a) at least one organic isocyanate compound;
- with a pre-mix comprising:
- (b) at least one polymer polyol having a hydroxyl number of about 28-35;
- (c) at least one blowing agent consisting essentially of water,
- (d) at least one gelling catalyst,
- (e) at least one blowing catalyst, and
- (f) at least one catalyst comprising a compound having a formula
- wherein R1 and R2 are methyl groups, Y is a methyl group or —CH2CH2OH;
- Z is —CH2CH2OH;
- and
- n is an integer from 3 to 7, inclusive;
- and wherein the foamed polyurethane comprises an open celled flexible foam.
A foamed polyurethane production method comprising contacting:
- (a) at least one organic isocyanate compound;
- with a pre-mix comprising:
- (b) at least one polymer polyol;
- (c) at least one blowing agent consisting essentially of water, and
- (d) at least one catalyst comprising a compound having a formula
- wherein R1 and R2 are methyl groups, Y is a methyl group or —CH2CH2OH;
- Z is —CH2CH2OH;
- and
- n is an integer from 3 to 7, inclusive;
- and wherein the foamed polyurethane comprises an open celled flexible foam.
Dependencies are inferred from the claim text.