Abstract 1. IN A PROCESS FOR THE PREPARATION OF A POLYMER BY POLYMERIZING IN AN AQUEOUS DISPERSION A MONOMERIC MIXTURE CONSISTING ESSENTIALLY OF ON A WEIGHT PERCENT BASIS, 20-80 OF A CONJUGATED DIOLEFIN, 15-80 OF A VINYL MONOMER, AND 0.5-8 OF A CARBOXYLIC ACID HAVING ETHYLENIC UNSATURATION A TO THE CARBOXY GROUP AND COPOLYMERIZABLE WITH THE VINYL OR CONJUGATED DIENE MONOMER, SAID POLYMERIZATION BEING CONDUCTED AT AN INITIAL PH OF ABOUT 1.5-3.6 AND AT A TREMPERATURE NO GREATER THAN 100*C., AND THEREAFTER REAISING THE PH OF THE POLYMER DISPERSION BY THE ADDITION OF A BASE THERETO, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE POLYMERIZATION FOR 6-12 HOURS, AFTER THE POLYMERIZATION, NEUTRALIZING FROM 15-55% ONLY OF THE CARBOXYL GROUP OF THE THUS PRODUCED POLYMER WITH THE BASE, AND THEN AGGLOMERATING THE DISPERSION OF PARTIALLY NEUTRALIZED POLYMER, THEREBY PRODUCING A RELATIVELY ODORRLESS, LOW VISCOSITY AQUEOUS POLYMERIC DISPERSION.
IN A PROCESS FOR THE PREPARATION OF A POLYMER BY POLYMERIZING IN AN AQUEOUS DISPERSION A MONOMERIC MIXTURE CONSISTING ESSENTIALLY OF ON A WEIGHT PERCENT BASIS, 20-80 OF A CONJUGATED DIOLEFIN, 15-80 OF A VINYL MONOMER, AND 0.5-8 OF A CARBOXYLIC ACID HAVING ETHYLENIC UNSATURATION A TO THE CARBOXY GROUP AND COPOLYMERIZABLE WITH THE VINYL OR CONJUGATED DIENE MONOMER, SAID POLYMERIZATION BEING CONDUCTED AT AN INITIAL PH OF ABOUT 1.5-3.6 AND AT A TREMPERATURE NO GREATER THAN 100*C., AND THEREAFTER REAISING THE PH OF THE POLYMER DISPERSION BY THE ADDITION OF A BASE THERETO, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE POLYMERIZATION FOR 6-12 HOURS, AFTER THE POLYMERIZATION, NEUTRALIZING FROM 15-55% ONLY OF THE CARBOXYL GROUP OF THE THUS PRODUCED POLYMER WITH THE BASE, AND THEN AGGLOMERATING THE DISPERSION OF PARTIALLY NEUTRALIZED POLYMER, THEREBY PRODUCING A RELATIVELY ODORRLESS, LOW VISCOSITY AQUEOUS POLYMERIC DISPERSION.
Claim 2
Dependent Claim
142 words
IN A PROCESS FOR THE PREPARATION OF A POLYMER BY POLYMERIZING IN AN AQUEOUS DISPERSION A MONOMERIC MIXTURE CONSISTING ESSENTIALLY OF ON A WEIGHT PERCENT BASIS, 20-80 OF A CONJUGATED DIOLEFIN, 15-80 OF A VINYL MONOMER, AND 0.5-8 OF A CARBOXYLIC ACID HAVING ETHYLENIC UNSATURATION A TO THE CARBOXY GROUP AND COPOLYMERIZABLE WITH THE VINYL OR CONJUGATED DIENE MONOMER, SAID POLYMERIZATION BEING CONDUCTED AT AN INITIAL PH OF ABOUT 1.5-3.6 AND AT A TREMPERATURE NO GREATER THAN 100*C., AND THEREAFTER REAISING THE PH OF THE POLYMER DISPERSION BY THE ADDITION OF A BASE THERETO, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE POLYMERIZATION FOR 6-12 HOURS, AFTER THE POLYMERIZATION, NEUTRALIZING FROM 15-55% ONLY OF THE CARBOXYL GROUP OF THE THUS PRODUCED POLYMER WITH THE BASE, AND THEN AGGLOMERATING THE DISPERSION OF PARTIALLY NEUTRALIZED POLYMER, THEREBY PRODUCING A RELATIVELY ODORRLESS, LOW VISCOSITY AQUEOUS POLYMERIC DISPERSION.