Appeal No. 96-3933
Application 07/829,899
1. A latex comprising:
(a) 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 C to C alkyl acrylate ester monomer4 12
and mixtures thereof;
(ii) about 0 to about 20 percent by weight of monomer selected from
the group consisting of vinyl esters, C to C esters of (meth)acrylic1 4
acid, styrene, and mixtures thereof;
(iii) about 1 to about 10 percent by weight of polar monomer
copolymerizable with said monomer(s) 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, and wherein the hydrophobic polymer is selected such
that it would not act as a plasticizer ;
(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 weight percentages of (i), (ii), (iii) and (iv) are each based on the
total weight of (i) plus (ii) plus (iii) plus (iv); and
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Last modified: November 3, 2007