Modified polyisocyanate and production process thereof

Details Modified polyisocyanate and production process thereof Modified polyisocyanate and production process thereof

C - Chemistry, Metallurgy

07

C

C07C 271/20 (2006.01) C07C 265/14 (2006.01) C07C 271/24 (2006.01) C07F 7/10 (2006.01) C08G 18/28 (2006.01) C08G 18/62 (2006.01) C08G 18/70 (2006.01)

Patent

CA 2270735

To obtain a modified polyisocyanate which has a high emulsifying/dispersing ability in aqueous resin compositions (solution or dispersion) and can be used advantageously as a curing agent or cross-linking agent. The modified polyisocyanate is comprised of a reaction product of a polyisocyanate (an aliphatic or alicyclic polyisocyanate such as 1,6-diisocyanate hexane or a derivative thereof) with one of the following components (1) to (3): (1) a nonionic emulsifying agent which contains active hydrogen atoms reactive with isocyanate group, has a hydrophile-lipophile balance (HLB) value of 17 or less and contains 15 to 35 in average of ethylene oxide units in one molecule, (2) a polyoxyalkylene alkylaryl ether which contains active hydrogen atoms, has an HLB value of from 5 to 17 and contains ethylene oxide unit and (3) a nonionic emulsifying agent which contains active hydrogen atoms and a coupling agent (e.g., a mercapto group-containing silane coupling agent) which contains active hydrogen atoms and has a hydrolysis condensing group.

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