A water-based acrylic resin and a method for producing the same are provided. The water-based acrylic resin includes a polymerizable composition. The polymerizable composition includes deionized water, a reactive emulsifier, a first acrylic monomer, a second acrylic monomer, a third acrylic monomer, a fourth acrylic monomer, and an acrylic polyol. The reactive emulsifier is a nonylphenyl-free reactive emulsifier. The first acrylic monomer is an alkyl-containing (meth)acrylate. The second acrylic monomer is a hydroxyl-containing (meth)acrylate. The third acrylic monomer is a carboxyl-containing (meth)acrylate. The fourth acrylic monomer is an ethylenically-unsaturated-functional-groups-containing (meth)acrylate. The acrylic polyol is one or both of a hydroxyl-containing polyester acrylic polyol and a hydroxyl-containing polyether acrylic polyol.

A hair fixative composition comprising a film forming polymer that is prepared from monomers comprising (a) 10-30% by weight of one or more copolymerizable comonomers selected from the group consisting of N-alkyl (meth)acrylamide wherein the alkyl group thereof contains from 2 to 12 carbon atoms, wherein for at least one of said copolymerizable comonomers the alkyl group contains from 5 to 12 carbon atoms; (b) 14-21% by weight of copolymerizable comonomers comprising acrylic acid and optionally one or more acidic copolymerizable comonomers selected from the group consisting of methacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, and the (C.sub.1-C.sub.4)alkyl half esters of maleic and fumaric acids; and (c) 40-76% by weight two or more copolymerizable comonomers selected from the group consisting of (C.sub.1-C.sub.12)alkyl(meth)acrylates, wherein at least one of said two or more copolymerizable comonomers is a (C.sub.1-C.sub.2)alkyl(meth)acrylate; said film forming polymer being optionally completely or partially neutralized with a basic reagent.

A hair fixative composition comprising a film forming polymer that is prepared from monomers comprising (a) 10-30% by weight of one or more copolymerizable comonomers selected from the group consisting of N-alkyl (meth)acrylamide wherein the alkyl group thereof contains from 2 to 12 carbon atoms, wherein for at least one of said copolymerizable comonomers the alkyl group contains from 5 to 12 carbon atoms; (b) 14-21% by weight of copolymerizable comonomers comprising acrylic acid and optionally one or more acidic copolymerizable comonomers selected from the group consisting of methacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, and the (C.sub.1-C.sub.4)alkyl half esters of maleic and fumaric acids; and (c) 40-76% by weight two or more copolymerizable comonomers selected from the group consisting of (C.sub.1-C.sub.12)alkyl(meth)acrylates, wherein at least one of said two or more copolymerizable comonomers is a (C.sub.1-C.sub.2)alkyl(meth)acrylate; said film forming polymer being optionally completely or partially neutralized with a basic reagent.

The present invention relates to a copolymer (A) having a glass transition temperature T.sub.g of at least −30° C. obtainable by copolymerization of a mixture of olefinically unsaturated monomers (a) in at least one organic solvent and in the presence of at least one initiator, where the mixture of monomers (a) to be polymerized comprises (a1) 10 to 60 mol % of at least one monomer of the formula (I) below

##STR00001## where R.sub.1=C.sub.1 to C.sub.4 alkoxy, R.sub.2=C.sub.1 to C.sub.4 alkyl, and m=0 to 2, and (a2) 40 to 90 mol % of at least one olefinically unsaturated monomer selected from the group consisting of monomers of the formulae H.sub.2C═CH.sub.2—(C═O)—O—R.sub.x, H.sub.2C═CH(CH.sub.3)—(C═O)—O—R.sub.x, and H.sub.2C═CH.sub.2—O—(C═O)—R.sub.x, where R.sub.x is an alkyl radical having 1 to 20 carbon atoms,
and where the sum total of the molar fractions of the monomers (a1) and (a2), based on the total molar amount of monomers (a) used, is at least 90 mol %, and where the copolymerization is carried out at a temperature from 60 to 200° C. and at a pressure of at least 2 bar.

The present invention relates to a copolymer (A) having a glass transition temperature T.sub.g of at least −30° C. obtainable by copolymerization of a mixture of olefinically unsaturated monomers (a) in at least one organic solvent and in the presence of at least one initiator, where the mixture of monomers (a) to be polymerized comprises (a1) 10 to 60 mol % of at least one monomer of the formula (I) below

##STR00001## where R.sub.1=C.sub.1 to C.sub.4 alkoxy, R.sub.2=C.sub.1 to C.sub.4 alkyl, and m=0 to 2, and (a2) 40 to 90 mol % of at least one olefinically unsaturated monomer selected from the group consisting of monomers of the formulae H.sub.2C═CH.sub.2—(C═O)—O—R.sub.x, H.sub.2C═CH(CH.sub.3)—(C═O)—O—R.sub.x, and H.sub.2C═CH.sub.2—O—(C═O)—R.sub.x, where R.sub.x is an alkyl radical having 1 to 20 carbon atoms,
and where the sum total of the molar fractions of the monomers (a1) and (a2), based on the total molar amount of monomers (a) used, is at least 90 mol %, and where the copolymerization is carried out at a temperature from 60 to 200° C. and at a pressure of at least 2 bar.

The present invention relates to a copolymer (A) having a glass transition temperature T.sub.g of at least −30° C. obtainable by copolymerization of a mixture of olefinically unsaturated monomers (a) in at least one organic solvent and in the presence of at least one initiator, where the mixture of monomers (a) to be polymerized comprises (a1) 10 to 60 mol % of at least one monomer of the formula (I) below

##STR00001## where R.sub.1=C.sub.1 to C.sub.4 alkoxy, R.sub.2=C.sub.1 to C.sub.4 alkyl, and m=0 to 2, and (a2) 40 to 90 mol % of at least one olefinically unsaturated monomer selected from the group consisting of monomers of the formulae H.sub.2C═CH.sub.2—(C═O)—O—R.sub.x, H.sub.2C═CH(CH.sub.3)—(C═O)—O—R.sub.x, and H.sub.2C═CH.sub.2—O—(C═O)—R.sub.x, where R.sub.x is an alkyl radical having 1 to 20 carbon atoms,
and where the sum total of the molar fractions of the monomers (a1) and (a2), based on the total molar amount of monomers (a) used, is at least 90 mol %, and where the copolymerization is carried out at a temperature from 60 to 200° C. and at a pressure of at least 2 bar.

The present invention relates to a process for impregnating a fibrous substrate consisting of long fibers by a liquid (meth)acrylic mixture mainly containing methacrylic and/or acrylic components. The invention also relates to such a (meth)acrylic mixture and its composition, said (meth)acrylic mixture comprising a (meth)acrylic syrup and an aqueous dispersion of radical initiator. The invention also relates to a process for manufacturing mechanical parts or structured elements or articles made of composite material by impregnating the fibrous substrate with the (meth)acrylic mixture then polymerizing said (meth)acrylic mixture, and also such parts obtained according to said manufacturing process and used in varied fields such as the automotive industry, aeronautics, or else construction.

The present invention relates to a process for impregnating a fibrous substrate consisting of long fibers by a liquid (meth)acrylic mixture mainly containing methacrylic and/or acrylic components. The invention also relates to such a (meth)acrylic mixture and its composition, said (meth)acrylic mixture comprising a (meth)acrylic syrup and an aqueous dispersion of radical initiator. The invention also relates to a process for manufacturing mechanical parts or structured elements or articles made of composite material by impregnating the fibrous substrate with the (meth)acrylic mixture then polymerizing said (meth)acrylic mixture, and also such parts obtained according to said manufacturing process and used in varied fields such as the automotive industry, aeronautics, or else construction.

The present invention relates to a polymer composition comprising a (meth)acrylic polymer and a multistage polymer. In particular the present invention it relates to polymer composition comprising a (meth)acrylic polymer and a multistage polymer that can be used as a masterbatch. More particularly the present invention relates also to a process for preparing a polymer composition comprising a (meth)acrylic polymer and a multistage polymer by spray drying or coagulation.

The present invention relates to a polymer composition comprising a (meth)acrylic polymer and a multistage polymer. In particular the present invention it relates to polymer composition comprising a (meth)acrylic polymer and a multistage polymer that can be used as a masterbatch. More particularly the present invention relates also to a process for preparing a polymer composition comprising a (meth)acrylic polymer and a multistage polymer by spray drying or coagulation.