Reactive amine catalysts for polyurethane foam

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/18 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01) C08G 18/76 (2006.01)

Patent

CA 2689510

Polyurethanes made using compounds of formula A: Q-(R6) -M-(R7)-NR3R4 where Q is OH or NR1R2; M is O or NR5 where R5 is R1 or H; R1 is alkyl or an alkylene alcohol of from 1 to 6 carbons, especially CH3, CH2CH3, or CH2CH2OH; R2 is alkyl or an alkylene alcohol of from 1 to 6 carbons, especially CH3, CH2CH3, or -CH2CH2OH; R3 is hydrogen or alkyl of from 1 to 6 carbons, especially H, CH3 or CH2CH3; R4 is hydrogen; where R6 is an alkylene group of from 2 to 5 carbons; and wherein R7 is an alkylene group of from 2 to 5 carbons. Illustrative catalysts of this invention include but are not limited to N,N,N'-trimethylbis(aminoethyl)ether, dimethylaminoethoxypropylamine, and (3-aminopropy!)(2- hydroxyethyl)methylamine.

La présente invention concerne des polyuréthanes fabriqués en utilisant des composés de formule A : Q-(R6)-M-(R7)-NR3R4, Q représentant OH ou NR1R2 ; M représentant O ou NR5, R5 représentant R1 ou H ; R1 représentant un alkyle ou un alcool d'alkylène ayant de 1 à 6 carbones, en particulier CH3, CH2CH3, ou CH2CH2OH ; R2 représentant un alkyle ou un alcool d'alkylène ayant de 1 à 6 carbones, en particulier CH3, CH2CH3, ou -CH2CH2OH ; R3 représentant un hydrogène ou un alkyle ayant de 1 à 6 carbones, en particulier H, CH3 ou CH2CH3 ; R4 représentant un hydrogène ; R6 représentant un groupe alkylène ayant de 2 à 5 carbones ; et R7 représentant un groupe alkylène ayant de 2 à 5 carbones. Des catalyseurs servant d'illustration à cette invention comprennent mais ne sont pas limités au N,N,N'-triméthylbis(aminoéthyl)éther, la diméthylaminoéthoxypropylamine, et la (3-aminopropyl)(2-hydroxyéthyl)méthylamine.

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