Chain extenders

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/10 (2006.01) C08G 18/50 (2006.01) C08G 18/75 (2006.01)

Patent

CA 2649230

This invention provides chain extender compositions. These compositions comprise (i) an aliphatic secondary diamine, and (ii) a component selected from the group consisting of: (a) a cycloaliphatic primary diamine; (b) an aliphatic secondary diamine; (c) an aliphatic secondary diamine and an aliphatic primary diamine; (d) an aliphatic diimine; and (e) a combination of any two or more of (a) through (d), with the proviso that when (ii) is (a), (i) is a noncyclic aliphatic secondary diamine. Processes for producing polyurethanes, polyureas, and polyurea-urethanes are also provided.

La présente invention concerne des compositions d'agent d'allongement de chaîne. Ces compositions comprennent (i) une diamine secondaire aliphatique, et (ii) un composant choisi dans le groupe constitué par : (a) une diamine primaire cycloaliphatique ; (b) une diamine secondaire aliphatique ; (c) une diamine secondaire aliphatique et une diamine primaire aliphatique ; (d) un diimine aliphatique ; et (e) une combinaison de deux ou plusieurs des composants (a) à (d), à condition que lorsque (ii) est (a), (i) est une diamine secondaire aliphatique acyclique. La présente invention concerne également des procédés de production de polyuréthanes, de polyurées et de polyurée-uréthanes.

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