The present invention relates to a polymer latex obtained from the emulsion polymerization in aqueous medium of a mixture of ethylenically unsaturated monomers comprising:

(a) more than 60 wt. % to 75 wt. % of at least one aliphatic conjugated diene
(b) 10 wt. % to 30 wt. % of at least one vinyl aromatic compound; and
(c) 0.5 to 5 wt. % of at least one ethylenically unsaturated silane bearing at least one silicon bonded hydrolysable group;
(d) 0.1 to 8 wt. % of at least one ethylenically unsaturated acid; and
(e) 0 to 20 wt. % of at least one further ethylenically unsaturated compound different from any of compounds (a) to (d),
the weight percentages being based on the total amount of monomers and add up to 100 wt. %, to a binder comprising said polymer latex and to a fiber structure fortified by said binder.

The present invention relates to a polymer latex obtained from the emulsion polymerization in aqueous medium of a mixture of ethylenically unsaturated monomers comprising:

(a) more than 60 wt. % to 75 wt. % of at least one aliphatic conjugated diene
(b) 10 wt. % to 30 wt. % of at least one vinyl aromatic compound; and
(c) 0.5 to 5 wt. % of at least one ethylenically unsaturated silane bearing at least one silicon bonded hydrolysable group;
(d) 0.1 to 8 wt. % of at least one ethylenically unsaturated acid; and
(e) 0 to 20 wt. % of at least one further ethylenically unsaturated compound different from any of compounds (a) to (d),
the weight percentages being based on the total amount of monomers and add up to 100 wt. %, to a binder comprising said polymer latex and to a fiber structure fortified by said binder.

Provided herein are processes for the generation of composite polymer materials utilizing a single resin. The processes utilize diffusion between a region undergoing a polymerization reaction preferentially polymerizing one monomer component and an unreactive region. Diffusion and subsequent/concurrent polymerization results in a higher concentration of the more reactive monomer component in the reacting region and a higher concentration of the less reactive monomer components in the unreactive region. The unreactive region may be later polymerized. In embodiments, photopolymerization is used and the regions are generated by a mask or other mechanism to pattern the light.

Provided herein are processes for the generation of composite polymer materials utilizing a single resin. The processes utilize diffusion between a region undergoing a polymerization reaction preferentially polymerizing one monomer component and an unreactive region. Diffusion and subsequent/concurrent polymerization results in a higher concentration of the more reactive monomer component in the reacting region and a higher concentration of the less reactive monomer components in the unreactive region. The unreactive region may be later polymerized. In embodiments, photopolymerization is used and the regions are generated by a mask or other mechanism to pattern the light.

Acrylic rubber bale excellent in storage stability and processability, a method for producing the same, a rubber mixture obtained by mixing the acrylic rubber bale, and a cross-linked product of the rubber mixture are provided. The acrylic rubber bale includes an acrylic rubber having a reactive group and a weight average molecular weight (Mw) of 100,000 to 5,000,000, wherein an amount of gel insoluble in methyl ethyl ketone is 50% by weight or less, and a specific gravity is 0.8 or more.

Acrylic rubber bale excellent in storage stability and processability, a method for producing the same, a rubber mixture obtained by mixing the acrylic rubber bale, and a cross-linked product of the rubber mixture are provided. The acrylic rubber bale includes an acrylic rubber having a reactive group and a weight average molecular weight (Mw) of 100,000 to 5,000,000, wherein an amount of gel insoluble in methyl ethyl ketone is 50% by weight or less, and a specific gravity is 0.8 or more.

An acrylic copolymer is provided. The acrylic copolymer includes: a main monomer-derived repeating unit; and a chain transfer agent-derived part, wherein the main monomer-derived repeating unit includes a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinking monomer-derived repeating unit, the chain transfer agent-derived part is derived from a chain transfer agent having a carbonothioylthio group, and the chain transfer agent-derived part is included in an amount of 0.03 parts by weight to 0.08 parts by weight with respect to 100 parts by weight of the main monomer-derived repeating unit. A method of preparing the same, and an acrylic copolymer composition including the same is also provided.

An acrylic copolymer is provided. The acrylic copolymer includes: a main monomer-derived repeating unit; and a chain transfer agent-derived part, wherein the main monomer-derived repeating unit includes a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinking monomer-derived repeating unit, the chain transfer agent-derived part is derived from a chain transfer agent having a carbonothioylthio group, and the chain transfer agent-derived part is included in an amount of 0.03 parts by weight to 0.08 parts by weight with respect to 100 parts by weight of the main monomer-derived repeating unit. A method of preparing the same, and an acrylic copolymer composition including the same is also provided.

Acrylic rubber bale excellent in storage stability and processability, a method for producing the same, a rubber mixture obtained by mixing the acrylic rubber bale, and a cross-linked product of the rubber mixture are provided. The acrylic rubber bale includes an acrylic rubber having a reactive group and a weight average molecular weight (Mw) of 100,000 to 5,000,000, wherein an amount of gel insoluble in methyl ethyl ketone is 60% by weight or less, and a specific gravity is 0.8 or more.

Acrylic rubber bale excellent in storage stability and processability, a method for producing the same, a rubber mixture obtained by mixing the acrylic rubber bale, and a cross-linked product of the rubber mixture are provided. The acrylic rubber bale includes an acrylic rubber having a reactive group and a weight average molecular weight (Mw) of 100,000 to 5,000,000, wherein an amount of gel insoluble in methyl ethyl ketone is 60% by weight or less, and a specific gravity is 0.8 or more.