C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 33/08 (2006.01) B05D 3/00 (2006.01) B32B 7/12 (2006.01) C08F 220/18 (2006.01) C09J 7/02 (2006.01) C09J 133/08 (2006.01) G02B 5/128 (2006.01)
Patent
CA 2088120
The present invention relates to a latex comprising: (a) a copolymer mixture comprising about 40 to about 70 weight percent of a solid phase, said solid phase comprising the reaction product of: (i) about 70 to about 98.5 percent by weight of monomer selected from the group consisting of C4 to C12 alkyl acrylate ester monomer and mixtures thereof; (ii) about 0 to about 20 percent by weight of monomer selected from the group consisting of vinyl esters, C1 to C4 esters of (meth)acrylic acid, styrene, and mixtures thereof; (iii) about 1 to about 10 percent by weight of polar monomer copolymerizable with said monomer of element (a)(i) and element (a)(ii); (iv) about 0.5 to about 20 percent by weight of a hydrophobic polymer which is incapable of reaction with said monomers of elements (a)(i), (a)(ii), and (a)(iii), wherein said hydrophobic polymer has a number average molecular weight ranging from about 400 to about 50,000; (v) about 0.01 to about 1 percent by weight of an initiator; (vi) about 1 to about 10 percent by weight of an ionic copolymerizable surfactant; (vii) about 0 to 1 percent by weight of a chain transfer agent; and (viii) about 0 to 5 percent by weight of a crosslinking agent; wherein the percentages of (v), (vi), (vii), and (viii) are each based on the total weight of (i) plus (ii) plus (iii) plus (iv) and wherein the percentages of (i), (ii), (iii) and (iv) are each based on the total weight of (i) plus (ii) plus (iii) plus (iv); and (b) about 30 to about 60 percent by weight of an aqueous phase; wherein said weight percentages of (a) and (b) are each based on the total weight of said latex.
Crandall Michael D.
Koppes Robert D.
Lu Ying-Yuh
Minnesota Mining And Manufacturing Company
Smart & Biggar
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