Synergistic amine chain-extenders in polyurea spray elastomers

Details Synergistic amine chain-extenders in polyurea spray elastomers Synergistic amine chain-extenders in polyurea spray elastomers

C - Chemistry, Metallurgy

08

G

C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/66 (2006.01) C09D 175/02 (2006.01)

Patent

CA 2449369

Disclosed are derivatives of isophorone diamine exhibiting a synergistic relationship with other commonly employed chain extenders offering enhanced efficacy with regard to slowing of the polyurea elastomer cure profile, and processes employing their use. According to the invention, extensions of the gel-free and tack-free times are more readily achieved at lower loading levels for these chain extender blends than are afforded through the sole use of the individual molecules.

La présente invention concerne des dérivés de diamine d'isophorone présentant une relation synergique avec d'autres extendeurs de chaîne communément utilisés, offrant une efficacité améliorée en ce qui concerne le ralentissement du profil de durcissement de l'élastomère à base de polyurée, et des procédés faisant appel à leur utilisation. Selon l'invention, des extensions des temps hors-gel et hors-poisse sont obtenues plus rapidement à des niveaux de charge inférieurs pour lesdits mélanges d'extendeurs de chaîne par rapport aux temps conférés par la seule utilisation des molécules individuelles.

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