Abstract: The invention relates to aqueous uretdione group-containing compositions comprising or consisting of (A) at least one uretdione group-containing curing agent based on aliphatic, cycloaliphatic, araliphatic, and/or aromatic polyisocyanates which do not contain chemically bonded hydrophilating groups; (B) at least one hydroxy group-containing polyol which contains at least one chemically bonded carboxylic acid group; (C) optionally solvents; and (D) optionally auxiliary agents and additives; wherein the quantity ratio of the components (A) and (B) is measured such that the molar ratio of the NCO groups of the curing agent (A), said groups being provided in the form of uretdione, to the NCO reactive groups of the polyol (B) equals 3.0:0.5 to 0.5:3.0, and A and B are provided as a physical mixture.

Abstract: The invention relates to aqueous uretdione group-containing compositions comprising or consisting of (A) at least one uretdione group-containing curing agent based on aliphatic, cycloaliphatic, aliphatic and/or aromatic polyisocyanates which do not contain chemically bonded hydrophilating groups; (B) at least one polyacrylate copolymer; (C) optionally solvents; and (D) optionally auxiliary agents and additives; wherein the quantity ratio of the components (A) and (B) is measured such that the molar ratio of the NCO groups of the curing agent (A), said groups being provided in the form of uretdione, to the NCO reactive groups of the polyacrylate copolymer (B) equals 3.0:0.5 to 0.5:3.0, and A and B are provided as a physical mixture.

Abstract: A deformable film has a decorative surface featuring a completely matt appearance. For this purpose, the deformable film has a decorative surface provided with at least one coating comprising the following constituents: (a) an aqueous dispersion of a hydroxy-functional prepolymer, obtainable by conversion of at least one of the following components: (i) a component having hydroxyl groups, (ii) a polyester polyol having hydroxyl groups, (iii) a polyisocyanate having isocyanate groups, (iv) a compound having at least two groups reactive toward isocyanate groups and at least one group capable of anion formation, (v) water, where components (i) to (iii) and the ratio of components (i) to (iii) are selected such that an excess of hydroxyl groups is present relative to the isocyanate groups, and (b) nanoparticles having a number-average particle size of 1 to 1000 nm and (c) a crosslinker having at least two groups reactive toward hydroxyl groups.

Abstract: The present invention relates to an aqueous secondary copolymer dispersion comprising a copolymer (P) synthesized from a mixture of free-radically polymerizable monomers (M) comprising (M1) cycloaliphatic esters of acrylic and/or methylacrylic acid; (M2) vinyl esters of aliphatic carboxylic acids; (M3) hydroxy-functional, free-radically polymerizable monomers; (M4) carboxyl-functional, free-radically polymerizable monomers and (M5) hydroxyl- and carboxyl-free (meth)acrylic esters having C1 to C12 hydrocarbon radicals in the alcohol moiety and/or vinylaromatics. The mixture further comprises glycidyl esters of aliphatic carboxylic acids. The invention also relates to a method for the production of such a dispersion, to the use of the dispersion as a coating and as a binder in 2K polyurethane coatings.

Abstract: The present invention relates to aqueous secondary copolymer dispersion comprising a copolymer (P) synthesized from a mixture of free-radically polymerizable monomers (M) comprising: (M1) cycloaliphatic esters of acrylic and/or methylacrylic acid; (M3) hydroxy-functional, free-radically polymerizable monomers; (M4) carboxyl-functional, free-radically polymerizable monomers and (M5) hydroxyl- and carboxyl-free (meth)acrylic esters having C1 to C12 hydrocarbon radicals in the alcohol moiety and/or vinylaromatics, wherein the mixture further comprises polyols (PO) selected from the group of polyester polyols and/or polycarbonate polyols, the polyols having an average hydroxyl group functionality of at least 2. The invention also relates to a method for the production of such a dispersion, to the use of the dispersion as a coating and as a binder in 2K polyurethane coatings.

Abstract: The present invention relates to a coating composition that is suitable in particular for the production of coatings that can be matted. The coating composition comprises a) an aqueous dispersion of a hydroxy-functional prepolymer, obtainable by reaction of at least the following components: i) a component comprising hydroxy groups, ii) a polyester polyol comprising hydroxy groups, iii) a polyisocyanate comprising isocyanate groups, iv) a compound which comprises at least two groups reactive towards isocyanate groups and at least one group capable of anion formation, v) water, wherein components i)-iii) and the ratio of components i)-iii) are so chosen that an excess of hydroxy groups is present relative to the isocyanate groups, b) nanoparticles having a number-average particle size of from 1 to 1000 nm, and c) a crosslinker comprising at least two groups reactive towards hydroxy groups.

Abstract: A deformable film has a decorative surface featuring a completely matt appearance. For this purpose, the deformable film has a decorative surface provided with at least one coating comprising the following constituents: (a) an aqueous dispersion of a hydroxy-functional prepolymer, obtainable by conversion of at least one of the following components: (i) a component having hydroxyl groups, (ii) a polyester polyol having hydroxyl groups, (iii) a polyisocyanate having isocyanate groups, (iv) a compound having at least two groups reactive toward isocyanate groups and at least one group capable of anion formation, (v) water, where components (i) to (iii) and the ratio of components (i) to (iii) are selected such that an excess of hydroxyl groups is present relative to the isocyanate groups, and (b) nanoparticles having a number-average particle size of 1 to 1000 nm and (c) a crosslinker having at least two groups reactive toward hydroxyl groups.

Abstract: The present invention relates to aqueous secondary copolymer dispersion comprising a copolymer (P) synthesized from a mixture of free-radically polymerizable monomers (M) comprising: (M1) cycloaliphatic esters of acrylic and/or methylacrylic acid; (M3) hydroxy-functional, free-radically polymerizable monomers; (M4) carboxyl-functional, free-radically polymerizable monomers and (M5) hydroxyl- and carboxyl-free (meth)acrylic esters having C1 to C12 hydrocarbon radicals in the alcohol moiety and/or vinylaromatics, wherein the mixture further comprises polyols (PO) selected from the group of polyester polyols and/or polycarbonate polyols, the polyols having an average hydroxyl group functionality of at least 2. The invention also relates to a method for the production of such a dispersion, to the use of the dispersion as a coating and as a binder in 2K polyurethane coatings.

Abstract: The present invention relates to an aqueous secondary copolymer dispersion comprising a copolymer (P) synthesized from a mixture of free-radically polymerizable monomers (M) comprising (M1) cycloaliphatic esters of acrylic and/or methylacrylic acid; (M2) vinyl esters of aliphatic carboxylic acids; (M3) hydroxy-functional, free-radically polymerizable monomers; (M4) carboxyl-functional, free-radically polymerizable monomers and (M5) hydroxyl- and carboxyl-free (meth)acrylic esters having C1 to C12 hydrocarbon radicals in the alcohol moiety and/or vinylaromatics. The mixture further comprises glycidyl esters of aliphatic carboxylic acids. The invention also relates to a method for the production of such a dispersion, to the use of the dispersion as a coating and as a binder in 2K polyurethane coatings.

Abstract: An aqueous resin composition comprises a polyester-polyurethane resin which is obtained by reacting, in a one-stage process or multi-stage process, a reaction mixture comprising a polyester polyol with a number-average molecular weight Mn of >400 g/mole to <20 000 g/mole, at least one compound containing at least two isocyanate-reactive groups and at least one group capable of forming anions, a polyisocyanate and a dendritic polyol. The dendritic polyol is obtainable from a central initiator molecule or initiator polymer having at least one reactive hydroxyl group (X), which hydroxyl group (X) under formation of an initial tree structure is bonded to a reactive carboxyl group (Y) in a monomeric chain extender having the two reactive groups (X) and (Y), and wherein the chain extender has at least one carboxyl group (Y) and at least two hydroxyl groups (X) or hydroxyalkyl substituted hydroxyl groups (X).

Abstract: An aqueous resin composition comprises a polyester-polyurethane resin and a dendritic polyol. The polyester-polyurethane resin is obtained by reacting, in a one-stage process or multi-stage process, a reaction mixture comprising a polyester polyol with a number-average molecular weight Mn of ?400 g/mole to ?6000 g/mole, at least one compound containing at least two isocyanate-reactive groups and at least one group capable of forming anions, and a polyisocyanate. The dendritic polyol is obtainable from a central initiator molecule or initiator polymer having at least one reactive hydroxyl group (X), which hydroxyl group (X) under formation of an initial tree structure is bonded to a reactive carboxyl group (Y) in a monomeric chain extender having the two reactive groups (X) and (Y), and wherein the chain extender has as least one carboxyl group (Y) and at least two hydroxyl groups (X) or hydroxyalkyl substituted hydroxyl groups (X).

Abstract: The present invention relates to an aqueous polyester-polyurethane dispersion comprising a polyester resin, a basic neutralizing agent and water. The invention further relates to a process for the production of these dispersions and to their use. It has been found that by using succinic acid in the formation of the polyester polyol and dimethylol butyric acid in the formation of the polyester-polyurethane no further organic co-solvents such as NMP are necessary to form stable and useful aqueous polymer dispersions.

Abstract: Aqueous polyacrylate dispersions comprising hydrophobic co-solvents are provided. The dispersions are prepared from copolymers P) which are comprised of I) a hydroxy-functional, hydrophobic polymer containing as structural monomers Ia) (meth)acrylic acid esters having from C1- to C18-hydrocarbon radicals in the alcohol part and/or vinyl aromatic compounds and/or vinyl esters and Ib) hydroxy-functional monomers; and II) a hydroxy-functional, hydrophilic polymer containing as structural components IIa) (meth)acrylic acid esters having from C1- to C18-hydrocarbon radicals in the alcohol part and/or vinyl aromatic compounds and/or vinyl esters, IIb) hydroxy-functional monomers and IIc) acid-functional monomers, and as solvents C) one or more solvents selected from the group consisting of hydrophobic, water-immiscible hydrocarbons having an initial boiling point of from 170° C. to 250° C. and a dry point of from 200° C. to 280° C.

Abstract: The invention concerns aqueous secondary polymer dispersions based on special acrylate building blocks, a process for their production and their use as binders for the production of blister-free coatings.

Abstract: Aqueous polyacrylate dispersions comprising hydrophobic co-solvents are provided. The dispersions are prepared from copolymers P) which are comprised of I) a hydroxy-functional, hydrophobic polymer containing as structural monomers Ia) (meth)acrylic acid esters having from C1- to C18-hydrocarbon radicals in the alcohol part and/or vinyl aromatic compounds and/or vinyl esters and Ib) hydroxy-functional monomers; and II) a hydroxy-functional, hydrophilic polymer containing as structural components IIa) (meth)acrylic acid esters having from C1- to C18-hydrocarbon radicals in the alcohol part and/or vinyl aromatic compounds and/or vinyl esters, IIb) hydroxy-functional monomers and IIc) acid-functional monomers, and as solvents C) one or more solvents selected from the group consisting of hydrophobic, water-immiscible hydrocarbons having an initial boiling point of from 170° C. to 250° C. and a dry point of from 200° C. to 280° C.

Abstract: A process for preparing copolymer dispersions that includes subjecting A) one or more vinyl monomer mixtures containing a) OH-free (meth)acrylic esters and/or vinylaromatics, b) hydroxy-functional vinyl monomers and/or hydroxy-functional (meth)acrylic esters, c) ionic and/or potentially ionic monomers capable of free-radical copolymerization, and d)optionally further monomers, other than the compounds of components a)–c), capable of free-radical copolymerization; to free-radical polymerization in the presence of e) compounds according to formula (I) where R1 is an aliphatic, araliphatic or aromatic radical having 1 to 18 carbon atoms, R2 is H or CH3, R3, R4 are identical or different aliphatc radicals having 1 to 7 carbon atoms and n is 1 to 4; and subsequently dispersing the resultant copolymer B) before or after addition of a neutralizing agent C) in water. The resulting dispersions can be used to coat substrates.

Abstract: The present invention relates to a process for preparing aqueous, hydroxy-functional polyester-polyacrylate dispersions having a cosolvent content of 0 to 5% by weight, based on the weight of the dispersion, by preparing a polymer P) in a first step by polymerizing A) a mixture of vinyl monomers that are capable of free-radical copolymerization, in the presence of B) one or more compound(s) of formula (I) wherein R1 is an aliphatic, araliphatic or aromatic radical having 1 to 18 carbon atoms, R2 is H or CH3, R3 and R4 are identical or different aliphatic radicals having 1 to 7 carbon atoms, and n is 1 to 4, and then mixing polymer P) in a second step with C) one or more polyester polyols having a hydroxyl number of 10 to 500 mg KOH/g solids and an acid number of >0.5 to ?30 mg KOH/g solids, and dispersing the resulting polymer mixture in water in a further step, before or after addition of a neutralizing agent.

Abstract: The present invention related to a process for preparing aqueous polyester-polyacrylate dispersions having a cosolvent content of 0 to 5% by weight, based on the weight of the dispersion, by preparing a polymer P) in a first step by polymerizing A) a mixture of vinyl monomers that are capable of free-radical copolymerization, in the presence of B) one or more oligoesters prepared from compounds containing lactone groups and having a hydroxyl number of 145 to 710 mg KOH/g, an acid number of ?0.5 mg KOH/g solids and an average OH functionality of 2.5 to 5 mg KOH/g solids, and then mixing polymer P) in a second step with C) one or more polyester polyols having a hydroxyl number of 10 to 500 mg KOH/g solids and an acid number of >0.5 to ?30 mg KOH/g solids and dispersing the resulting polymer mixture in water in a further step, before or after addition of a neutralizing agent.

Abstract: A process for preparing copolymer dispersions that includes subjecting A) one or more vinyl monomer mixtures containing a) OH-free (meth)acrylic esters and/or vinylaromatics, b) hydroxy-functional vinyl monomers and/or hydroxy-functional (meth)acrylic esters, c) ionic and/or potentially ionic monomers capable of free-radical copolymerization, and d)optionally further monomers, other than the compounds of components a)-c), capable of free-radical copolymerization; to free-radical polymerization in the presence of e) compounds according to formula (I) where R1 is an aliphatic, araliphatic or aromatic radical having 1 to 18 carbon atoms, R2 is H or CH3, R3, R4 are identical or different aliphatc radicals having 1 to 7 carbon atoms and n is 1 to 4; and subsequently dispersing the resultant copolymer B) before or after addition of a neutralizing agent C) in water. The resulting dispersions can be used to coat substrates.