Surface chemistry modified latex and resdispersible powders, production and use thereof

Latex according to the preceding claim, characterized in that the free-radical polymerization is carried out in the presence of a polymer corresponding to the following formula:

• (R11)x-Z11-C(═S)-Z12-[A]-R12 (I)
• in which formula:
• Z11 represents C, N, O, S or P,
• Z12 represents S or P,
• R11 and R12, which may be identical or different, represent:
• an optionally substituted alkyl, acyl, aryl, alkene or alkyne group (i), or
• a saturated or unsaturated, optionally substituted or aromatic carbon-based ring (ii), or
• a saturated or unsaturated, optionally substituted heterocycle (iii), these groups and rings (i), (ii) and (iii) possibly being substituted with substituted phenyl groups, substituted aromatic groups or groups:
• alkoxycarbonyl or aryloxycarbonyl (—COOR), carboxyl (—COOH), acyloxy (—O2CR) carbamoyl (—CONR2), cyano (—CN), alkylcarbonyl, alkylarylcarbonyl, arylcarbonyl, arylalkylcarbonyl, phthalimido, maleimido, succinimido, amidino, guanidimo, hydroxyl (—OH), amino (—NR2), halogen, allyl, epoxy, alkoxy (—OR), S-alkyl, S-aryl, groups of hydrophilic or ionic nature such as the alkali metal salts of carboxylic acids, the alkali metal salts of sulphonic acid, polyalkylene oxide (PEO or PPO) chains and cationic substituents (quaternary ammonium salts), R respresenting an alkyl or aryl group,
• x corresponds to the valency of Z11, or alternatively
• x is 0, in which case Z11 represents a phenyl, alkene or alkyne radical, optionally substituted with an optionally substituted alkyl;
• acyl;
• aryl;
• alkene or alkyne group;
• an optionally substituted, saturated, unsaturated, or aromatic, carbon-based ring;
• an optionally substituted, saturated or unsaturated heterocycle;
• alkoxycarbonyl or aryloxycarbonyl (—COOR);
• carboxyl (—COOH);
• acyloxy (—O2CR);
• carbamoyl (—CONR2);
• cyano (—CN);
• alkylcarbonyl;
• alkylarylcarbonyl;
• arylcarbonyl;
• arylalkylcarbonyl;
• phthalimido;
• maleimido;
• succinimido;
• amidino;
• guanidimo;
• hydroxyl (—OH);
• amino (—NR2);
• halogen;
• allyl;
• epoxy;
• alkoxy (—OR), S-alkyl;
• S-aryl groups;
• groups of hydrophilic or ionic nature such as the alkali metal salts of carboxylic acids, the alkali metal salts of sulphonic acid, polyalkylene oxide (PEO or PPO) chains and cationic substituents (quaternary ammonium salts);
• A represents a monoblock, diblock or triblock polymer.

Latex according to any one of the preceding claims, characterized in that polymer A corresponds to at least one of the following formulae:

• 9
• in which formulae:
• Va, V′a, Vb, V′b, Vc and V′c, which may be identical or different, represent:
• H, an alkyl group or a halogen,
• Xa, X′a, Xb, X′b, Xc and X′c, which may be identical or different, represent H, a halogen or a group R, OR, OCOR, NHCOH, OH, NH2, NHR, N(R)2, (R)2N+O−, NHCOR, CO2H, CO2R, CN, CONH2, CONHR or CONR2, in which R, which may be identical or different, are chosen from alkyl, aryl, aralkyl, alkaryl, alkene and organosilyl groups, optionally perfluorinated and optionally substituted with one or more carboxyl, epoxy, hydroxyl, alkoxy, amino, halogen or sulphonic groups,
• l, m and n, which may be identical or different, are greater than or equal to 1,
• x, y and z, which may be identical or different, are equal to 0 or 1.

Latex according to any one of the preceding claims, characterized in that the ethylenically unsaturated monomer(s) is (are) chosen from:

• CXdX′d(═CVd-CV′d)t═CH2
• Xd and X′d, which may be identical or different, represent:
• H, an alkyl group or a halogen,
• Vd and V′d, which may be identical or different, represent H, a halogen or a group R, OR, OCOR, NHCOH, OH, NH2, NHR, N(R)2, (R)2N+O−, NHCOR, CO2H, CO2R, CN, CONH2, CONHR or CONR2, in which R, which may be identical or different, are chosen from alkyl, aryl, aralkyl, alkaryl, alkene and organosilyl groups, optionally perfluorinated and optionally substituted with one or more carboxyl, epoxy, hydroxyl, alkoxy, amino, halogen or sulphonic groups,
• t is 0 or 1.

Latex according to any one of the preceding claims, characterized in that the polymer containing residual ethylenically unsaturated bonds is obtained by free-radical polymerization of at least one ethylenically unsaturated monomer chosen from:

• CXdX′d(═CVd-CV′d)t═CH2
• Xd and X′d, which may be identical or different, represent:
• H, an alkyl group or a halogen,
• Vd and V′d, which may be identical or different, represent H, a halogen or a group R, OR, OCOR, NHCOH, OH, NH2, NHR, N(R)2, (R)2N+O—, NHCOR, CO2H, CO2R, CN, CONH2, CONHR or CONR2, in which R, which may be identical or different, are chosen from alkyl, aryl, aralkyl, alkaryl, alkene and organosilyl groups, optionally perfluorinated and optionally substituted with one or more carboxyl, epoxy, hydroxyl, alkoxy, amino, halogen or sulphonic groups,
• t is 0 or 1.