Polyether urethanes containing one reactive silane group and...

C - Chemistry – Metallurgy – 08 – G

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C08G 18/10 (2006.01) C08G 18/28 (2006.01) C08G 18/48 (2006.01) C09J 175/04 (2006.01)

Patent

CA 2542944

The present invention relates to a polyether urethane containing one reactive silane group and one or more polyether segments having a number average molecular weight of 1000 to 15,000, wherein the reactive silane groups are incorporated by the reaction of an isocyanate group with a compound corresponding to the formula (I) wherein X represents identical or different organic groups which are inert to isocyanate groups below 100~C, provided that at least two of these groups are alkoxy or acyloxy groups, Y represents a linear or branched alkylene group containing 1 to 8 carbon atoms and R1, represents an organic group which is inert to isocyanate groups at a temperature of 100~C or less.

L'invention concerne un uréthanne de polyéther qui contient un groupe silane réactif et un ou plusieurs segments de polyéther ayant une masse moléculaire moyenne en nombre comprise entre 1 000 et 15 000, les groupes silane réactifs étant incorporés par la réaction entre un groupe isocyanate et un composé de formule (I). Dans cette formule, X représente des groupes organiques identiques ou différents, inertes vis-à-vis des groupes isocyanate en dessous de 100 ·C, à condition qu'au moins deux de ces groupes soient des groupes alcoxy ou acyloxy, Y est un groupe alkylène linéaire ou ramifié qui contient entre 1 et 8 atomes de carbone, et R¿1 ?est un groupe organique inerte vis-à-vis des groupes isocyanate à une température égale ou inférieure à 100 ·C.

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