Copolymerizate of unsaturated polyester, unsaturated monomer and carboxy containing monomer

Claim 2

A WATER-DILUTABLE FILM-FORMING MATERIAL THAT IS A COPOLYMER FORMED BY THE ADDITION POLYMERIZATION OF (A) AT LEAST ONE NEUTRAL VINYL MONOMER OF THE FORMULA CH2=CR1R2, WHERE R1 IS HYDROGEN OR A METHYL GROUP AND R 2 IS A PHENYL OR A COOR3 RESIDUE, WHERE R3 IS A STRAIGHT OR BRANCHED CHAIN ALKYL GROUP WITH 1 TO 8 CARBON ATOMS; (B) AT LEAST ONE ACIDIC VINYL MONOMER OF FORMULA R4CH=CR1COOH, WHERE R1 IS HYDROGEN OR A METHYL GROUP AND R4 IS HYDROGEN OR A CARBOXYL GROUP (OR ITS INTERNAL ANHYDRIDE) OF THE CLASS OF THE PARTIALY HYDROGEACID (OR ITS ANHYDRIDE) OF THE CLASS OF THE PARTIALLY HYDROGENATED PHTHALIC ACIDS, AND A,B-UNSATURATED ACYCIC DIBASIC ACID (OR ITS ANHYDRIDE) AND AT LEAST ONE ALCOHOL WITH ONE OR MORE ESTERIFIABLE HYDROXYL GROUPS AND IN WHICH THE ALICYLIC UNSATURATED ACID COMPRISES FROM 80 TO 100% BY WEIGHT OF THE ACYCLIC A,B-UNSATURATED ACID FROM 0 TO 20% BY WEIGHT OF THE TOTAL DIBASIC ACIDS AND THE MOLAR RATIO OF THE HYDROXYL GROUPS PROVIDED BY THE ALCOHOLS TO THE CARBOXYL GROUPS PROVIDED BY THE DIBASIC ACIDS (OR THEIR ANHYDIRDES) HAS A VALUE BETWEEN 1.05 AND1.4, THE COPOLYMER CONTAINING BETWEEN 30 AND 80% BY WEIGHT OF A), BETWEEN 3 AND 20% BY WEIGHT OF (B) AND BETWEEN 10 AND 67% BY WEIGHT OF (C), THE COPOLYMERIZATION OF (A), (B) AND (C) BEING EFFECTED BY FREE RADICALS AND THE COPOLYMER BEING SOLUBILIZED IN WATER THROUGH PARTIAL NEUTRAL IZATION OF ITS FREE CARBOXYL GROUPS WITH A BASE DISSOLVED IN WATER UP TO A PH VALUE BETWEEN ABOUT 7.5 AND 10.

Claim 3

A water-dilutable film-forming material that is a copolymer formed by the addition polymerization of (a) at least one neutral vinyl monomer of the formula CH2 CR1R2, where R1 is hydrogen or a methyl group and R2 is a phenyl or a COOR3 residue, where R3 is a straight or branched chain alkyl group with 1 to 8 carbon atoms; (b) at least one acidic vinyl monomer of formula R4CH CR1COOH, where R1 is hydrogen or a methyl group and R4 is hydrogen or a carboxyl group (or its internal anhydride) and (c) an unsaturated alicyclic dibasic acid (or its anhydride) of the class of the partially hydrogenated phthalic acids, and Alpha , Beta -unsaturated acyclic dibasic acid (or its anhydride) and at least one alcohol with one or more esterifiable hydroxyl groups and in which the alicylic unsaturated acid comprises from 80 to 100% by weight, and the acyclic Alpha , Beta -unsaturated acid from 0 to 20% by weight of the total dibasic acids and the molar ratio of the hydroxyl groups provided by the alcohols to the carboxyl groups provided by the dibasic acids (or their anhydrides) has a value between 1.05 and 1.4, the copolymer containing between 30 and 80% by weight of a), between 3 and 20% by weight of (b) and between 10 and 67% by weight of (c), the copolymerization of (a), (b) and (c) being effected by free radicals and the copolymer being solubilized in water through partial neutralization of its free carboxyl groups with a base dissolved in water up to a pH value between about 7.5 and 10.

Claim 4

A water-dilutable film-forming material that is a copolymer formed by the addition polymerization of (a) at least one neutral vinyl monomer of the formula CH2 CR1R2, where R1 is hydrogen or a methyl group and R2 is a phenyl or a COOR3 residue, where R3 is a straight or branched chain alkyl group with 1 to 8 carbon atoms; (b) at least one acidic vinyl monomer of formula R4CH CR1COOH, where R1 is hydrogen or a methyl group and R4 is hydrogen or a carboxyl group (or its internal anhydride) and (c) an unsaturated alicyclic dibasic acid (or its anhydride) of the class of the partially hydrogenated phthalic acids, and Alpha , Beta -unsaturated acyclic dibasic acid (or its anhydride) and at least one alcohol with one or more esterifiable hydroxyl groups and in which the alicylic unsaturated acid comprises from 80 to 100% by weight, and the acyclic Alpha , Beta -unsaturated acid from 0 to 20% by weight of the total dibasic acids and the molar ratio of the hydroxyl groups provided by the alcohols to the carboxyl groups provided by the dibasic acids (or their anhydrides) has a value between 1.05 and 1.4, the copolymer containing between 30 and 80% by weight of a), between 3 and 20% by weight of (b) and between 10 and 67% by weight of (c), the copolymerization of (a), (b) and (c) being effected by free radicals and the copolymer being solubilized in water through partial neutralization of its free carboxyl groups with a base dissolved in water up to a pH value between about 7.5 and 10.

Claim 5

A film-forming material according to claim 1 in which the unsaturated alicyclic dibasic acid is one of the isomers of tetrahydrophthalic acid or its anhydride.

Claim 6

A film-forming material according to claim 1 in which the unsaturated alicyclic dibasic acid is one of the isomers of dihydrophthalic acid and the Alpha - Beta -unsaturated acyclic dibasic acid is maleic acid or its anhydride.