US 11,505,636 B2 · Binder compositions and methods of preparing and using the same

Abstract

The present disclosure relates to compositions comprising a copolymer derived from a vinyl aromatic monomer, a (meth)acrylate monomer, an acid monomer, and a copolymerizable surfactant and compositions comprising the same. The (meth)acrylate monomer can be selected from a monomer having a theoretical glass transition temperature (Tg) for its corresponding homopolymer of 0° C. or less or a hydrophobic (meth)acrylate monomer. In some embodiments, the copolymer is further derived from an organosilane. The copolymers can have a theoretical glass transition temperature (Tg) from −60° C. to 80° C. and a number average particle size of 250 nm or less. The compositions can be used to prepare compositions such as coatings that have improved water resistance, blush resistance, and/or resistance to hydrostatic pressures. Methods of making the copolymers are also provided.

Claims14

Dependent claims

A composition, comprising:

a copolymer derived from monomers comprising
50 to 55% by weight of styrene;
40 to 45% by weight of butyl acrylate,
1% to 3% by weight of an acid monomer which is a mixture of itaconic acid and acrylic acid;
0.75 to 2% by weight of an additional monomer which is (meth)acrylamide, or
a mixture of (meth)acrylamide and an organosilane;
and
0.1 to 0.75% by weight of a copolymerizable surfactant which is according to Formula IIIa:
wherein R1is C9-C15 alkyl or C7-C11 alkyl-phenyl, X is H, SO3NH4 and/or SO3N4, and m is 3 to 50;
and
wherein the copolymer has a theoretical glass transition temperature (Tg) from −10° C. to 50° C. and
wherein the copolymer has a number average particle size of 200 nm or less.

9 more elements

Dependencies are inferred from the claim text.

Binder compositions and methods of preparing and using the same

Life of this patent

Binder compositions and methods of preparing and using the same

Life of this patent

Abstract

Claims14