Latex sealants containing epoxysilanes

Details Latex sealants containing epoxysilanes Latex sealants containing epoxysilanes

C - Chemistry, Metallurgy

09

J

C09J 201/00 (2006.01) C08K 5/54 (2006.01) C08K 5/5435 (2006.01) C08L 33/06 (2006.01) C08L 101/00 (2006.01) C09D 133/06 (2006.01) C09J 11/06 (2006.01) C09J 133/06 (2006.01) C09K 3/10 (2006.01)

Patent

CA 2256206

Sealant compositions comprising a latex polymer and an epoxysilane of the formula (see above formula) in which R1 is a difunctional alkyl bridge with 2 to 6 carbon atoms, each R2 group is the same or different and each is a C1 to C12 alkyl or aryl group, or a C1 to C6 alkoxy group each R3 group is the same or different and each is a C2 to C6 alkyl group, n is 2 or 1, R4, R5, and R6 are each hydrogen or a C1 to C6 alkyl group, R7 is an alkyl group having from one to four carbon atoms, or aralkyl, or an aryl group having six to ten carbon atoms, and c has a value of zero or one; wherein the epoxysilane is added to the polymer neat or as a non-aqueous solution.

Divulgation de composés d'étanchéité comprenant un polymère de latex et un époxysilane de formule (voir la formule ci-dessus) dans laquelle R1 désigne un pont alkyle à deux fonctions ayant de 2 à 6 atomes de carbone, chaque groupe R2 est identique ou différent et est un groupe alkyle ou aryle en C1-C12 ou un groupe alcoxy en C1-C6, chaque groupe R3 est identique ou différent et est un groupe alkyle en C2-C6, n est égal à 2 ou 1, R4, R5 et R6 sont chacun un hydrogène ou un groupe alkyle en C1-C6, R7 est un groupe alkyle en C1-C4 ou un groupe aralkyle ou un groupe aryle en C6-C10, et c est égal à 0 ou 1. L'époxysilane est ajouté au polymère à l'état pur ou en solution non aqueuse.

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