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US 2017/0362425 A1Published application
High Performance Surfactant Free Latexes for Improved Water Resistance
AssigneeRhodia Operations
InventorsAdnan SIDDIQUI, Pierre-Emmanuel DUFILS, David James WILSON, Tiffany CHEN
Life of this patent
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Abstract
Coatings and other applications containing a latex with modified surface properties obtainable by methods of adding a water soluble amphiphilic copolymer in a aqueous dispersion of a water-insoluble polymer obtained from ethylenically unsaturated monomers.
Claims14
An aqueous composition comprising:
- water;
- optionally, a pigment;
- and
- a film-forming latex composition with modified surface chemistry obtained by free-radical emulsion polymerization in the presence:
- of at least one ethylenically unsaturated monomer or at least one polymer containing residual ethylenically unsaturated bonds,
- of at least one free-radical polymerization initiator, and
- of at least one water-soluble and/or water-dispersible polymer of formula (Ia) or formula (Ib):
- (R11)x-Z11—C(═S)—Z12-[A]-[B]-R12 (Ia), or
- (R11)x-Z11—C(═S)—Z12-[B]-R12 (Ib)
- wherein:
- Z11 represents C, N, O, S or P,
- 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 (1) rings (i) or heterocycles (iii) being optionally substituted with substituted phenyl groups, substituted aromatic groups or groups selected from:
- alkoxycarbonyl or aryloxycarbonyl (—COOR) groups,
- carboxyl (—COOH) groups,
- acyloxy (—O2CR) groups,
- carbamoyl (—CONR2) groups,
- cyano (—CN) groups,
- alkylcarbonyl groups,
- alkylarylcarbonyl groups,
- arylcarbonyl groups,
- arylalkylcarbonyl groups,
- phthalimido groups,
- maleimido groups,
- succinimido groups,
- amidino groups,
- guanidimo groups,
- hydroxyl (—OH) groups,
- amino (—NR2) groups,
- halogen groups,
- allyl groups,
- epoxy groups,
- alkoxy (—OR) groups,
- S-alkyl groups,
- S-aryl groups,
- alkali metal salts of carboxylic acids,
- alkali metal salts of sulphonic acid,
- polyalkylene oxide (PEO or PPO) chains, and
- quaternary ammonium salts,
- wherein R represents 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, being optionally substituted with groups selected from:
- 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;
- an alkoxycarbonyl or aryloxycarbonyl (—COOR) group,
- a carboxyl (COOH) group,
- an acyloxy (—O2CR) group,
- a carbamoyl (—CONR2) group,
- a cyano (—CN) group;
- an alkylcarbonyl group;
- an alkylarylcarbonyl group;
- an arylcarbonyl group;
- an arylalkylcarbonyl group;
- a phthalimido group,
- a maleimido group,
- a succinimido group,
- a amidino group,
- a guanidimo group,
- a hydroxyl (—OH) group,
- an amino (—NR2) group,
- a halogen group,
- an allyl group,
- an epoxy group,
- an alkoxy (—OR) group,
- a S-alkyl group,
- a S-aryl group,
- an alkali metal salt of carboxylic acid,
- an alkali metal salt of sulphonic acid,
- polyalkylene oxide (PEO or PPO) chains, and
- quaternary ammonium salts,
- wherein R represents an alkyl or aryl group;
- A is a monoblock, diblock or triblock polymer comprising at least a first block which is hydrophobic in nature;
- and
- B is a monoblock, diblock or triblock polymer comprising at least one monomer of vinyl acetate.
75 more elements
A process for preparing an aqueous polymer dispersion, the process comprising the step of:
- contacting the compound of formula (Ia) or formula (Ib) in an aqueous polymerization medium with at least one ethylenically unsaturated monomers and at least one free radical initiator;
- thereby allowing free-radical polymerization of the ethylenically unsaturated monomers.
An aqueous composition comprising:
- water;
- optionally, a pigment;
- and
- a film-forming latex composition with modified surface chemistry obtained by free-radical emulsion polymerization in the presence:
- of at least one ethylenically unsaturated monomer or at least one polymer containing residual ethylenically unsaturated bonds,
- of at least one free-radical polymerization initiator, and
- of at least one water-soluble and/or water-dispersible polymer of formula (I):
- (R11)x-Z11—C(═S)—Z12-[A]-R12 (I)
- wherein:
- 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 (1) rings (i) or heterocycles (iii) being optionally substituted with substituted phenyl groups, substituted aromatic groups or groups selected from:
- alkoxycarbonyl or aryloxycarbonyl (—COOR) groups,
- carboxyl (—COOH) groups,
- acyloxy (—O2CR) groups,
- carbamoyl (—CONR2) groups,
- cyano (—CN) groups,
- alkylcarbonyl groups,
- alkylarylcarbonyl groups,
- arylcarbonyl groups,
- arylalkylcarbonyl groups,
- phthalimido groups,
- maleimido groups,
- succinimide groups,
- amidino groups,
- guanidimo groups,
- hydroxyl (—OH) groups,
- amino (—NR2) groups,
- halogen groups,
- allyl groups,
- epoxy groups,
- alkoxy (—OR) groups,
- S-alkyl groups,
- S-aryl groups,
- alkali metal salts of carboxylic acids,
- alkali metal salts of sulphonic acid,
- polyalkylene oxide (PEO or PPO) chains, and
- quaternary ammonium salts,
- wherein R represents 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, being optionally substituted with groups selected from:
- 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;
- an alkoxycarbonyl or aryloxycarbonyl (—COOR) group,
- a carboxyl (COOH) group,
- an acyloxy (—O2CR) group,
- a carbamoyl (—CONR7) group,
- a cyano (—CN) group;
- an alkylcarbonyl group;
- an alkylarylcarbonyl group;
- an arylcarbonyl group;
- an arylalkylcarbonyl group;
- a phthalimido group,
- a maleimido group,
- a succinimido group,
- a amidino group,
- a guanidimo group,
- a hydroxyl (—OH) group,
- an amino (—NR2) group,
- a halogen group,
- an allyl group,
- an epoxy group,
- an alkoxy (—OR) group,
- a S-alkyl group,
- a S-aryl group,
- an alkali metal salt of carboxylic acid,
- an alkali metal salt of sulphonic acid,
- polyalkylene oxide (PEO or PPO) chains, and
- quaternary ammonium salts,
- wherein R represents an alkyl or aryl group;
- and
- A represents a monoblock, diblock or triblock polymer comprising at least a first block which is hydrophilic in nature and a second block which is hydrophobic in nature.
73 more elements
Dependencies are inferred from the claim text.