Acrylate-containing polymer blends

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 53/02 (2006.01) C08L 33/06 (2006.01)

Patent

CA 2224237

A polymer blend comprising (a) a modified block copolymer comprising (i) a polystyrene block and (ii) a polydiene block or a hydrogenated polydiene block, said polydiene block or hydrogenated polydiene block being modified to contain an average of one or more carboxyl groups; and (b) a polymer comprising a polymerization reaction product (i) at least one acrylic or methacrylic acid ester of a non- tertiary alcohol having 1 to 14 carbon atoms, inclusive, (ii) at least one monomer having carboxylic acid functionality which is present in an amount ranging from about 1 to about 15 parts by weight, based on 100 parts by weight of polymer (b); and (iii) a titanate selected from the group consisting of (ethanol,2,2',2"-nitrilotris-titanium(4+) salt); titanium bis(ethyl-3-oxobutanolato-O103)bis2-propanolato; a reaction product of tetraalkyltitanate with a.beta.-diketone and an alkanolamine; and tetrabutyltitanate (1-butanol,titanium(4+) salt).

L'invention porte sur un mélange de polymères comprenant: (a) un copolymère bloc modifié constitué par (i), un bloc polystyrène et (ii) un bloc polydiène ou un bloc polydiène hydrogéné modifiés pour inclure une moyenne d'un ou plusieurs groupes carboxyliques; et (b) un polymère comprenant un produit de réaction de polymérisation consistant en: (i) au moins un ester d'acide acrylique ou méthacrylique d'un alcool non tertiaire à 1 à 14 atomes de carbone, inclusivement, (ii) au moins un monomère à fonction d'acide carboxylique représentant entre 1 et 15 parties en poids sur 100 parties en poids du polymère (b); et (iii) un titanate choisi dans un groupe consistant en un (sel d'éthanol,2,2',2''-nitrilotris-titane(4+)), en titane bis(éthyl-3-oxobutanolato-O<1>O<3>), et en un produit de réaction du tétraalkyltitanate avec une beta -dicétone et une alcanolamine; et du tétrabutyltitanate (sel de 1-butanol,titane(4+)).

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