Process for producing vinyl chloride resin composition

Claim 1

A METHOD FOR PRODUCING A MULTI-COMPONENT TYPE RESIN AS AN IMPACT MODIFIER FOR BLENDED VINYL CHLORIDE RESIN COMPOSITION HAVING EXCELLENT IMPACT STRENGTH, WEATHER-RESISTANCE, AND PROCESSABILITY, WHICH COMPRISES STEPS OF: A. EMULSION-POLYMERIZING IN THE PRESENCE OF A POLYMERIZATION CATALYST A MOMONER MIXTURE SELECTED FROM THE GROUP CONSISTING OF A MIXTURE OF 60 TO 95% BY WEIGHT OR ACRYLIC ACID ALKYL ESTER AND 5 TO 40% BY WEIGHT OF BUTADIENE, AND A MIXTURE OF 40 TO 95% BY WEIGHT OF ACRYLIC ACID ALKYL ESTER, 5 TO 40% BY WEIGHT OF BUTADIENE, AND 0.1 TO 30% BY WEIGHT OF METHYLMETHACRYLATE IN THE PRESENCE OF FROM 0.01 TO 3% BY WEIGHT OF A CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF DIVINYL BENZENE, DIVINYL TOLUENE, ETHYLENE GLYCOL DIMETHACRYLATE, DIETHYLENE GLYCOL DIMETHACRYLATE, AND TRIETHYLENE GLYCOL DIMETHACRYLATE TO PRODUCE A CROSS-LINKED COPOLYMER RUBBER LATEX; B. PROVIDING MOMONER COMPONENT IN A QUANTITY OF 50 TO 25 PARTS BY WEIGHT, WHICH COMPONENT CONSISTS OF 10 TO 90% BY WEIGHT OF STYRENE, 90 TO 10% BY WEIGHT OF METHYLMETHACRYLATE, AND 0.01 TO 3% BY WEIGHT OF A CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF DIVINYL BENZENE, DIVINYL TOLUENE, ETHYLENE GLYCOL DIMETHACRYLATE, DIETHYLENE GLYCOL DIMETHACRYLATE, AND TRIETHYLENE GLYCOL DIMETHACRYLATE; C. DIVIDING SAID MONOMER COMPONENTS INTO FIRST AND SECOND GRAFTING COMPONENTS, SAID FIRST GRAFTING COMPONENT BEING COMPOSED OF STYRENE AND METHYLMETHACRYLATE WITH STYRENE AS THE PRINCIPAL CONSTITUENT AND CONTAINING THEREIN THE CROSS-LINKING AGENT, AND SAID SECOND GRAFTING COMPONENT BEING COMPOSED OF METHYLMETHACRYLATE ALONE AND CONTAINING THEREIN THE CROSS-LINKING AGENT; D. ADDING SAID FIRST GRAFTING COMPONENT TO 50 TO 75 PARTS BY WEIGHT OF SAID CROSS-LINKED COPOLYER RUBBER LATEX TO BE GRAFT-POLYMERIZED THEREUPON; E. FURTHER ADDING SAID SECOND GRAFTING COMPONENT TO SAID GRAFT-POLYMERIZED COPOLYMER RUBBER LATEX TO BE FURTHER GRAFTED THEREUPON; AND F. RECOVERING THE MULTI-COMPONENT TYPE RESIN FROM SAID GRAFT-POLYMERIZED RUBBER LATEX THROUGH THE PROCESS STEPS OF ACID DEPOSITION, SALTING-OUT, DEHYDRATION, OR DESICCATION.

Claim 2

A METHOD FOR PRODUCING A MULTI-COMPONENT TYPE RESIN AS AN IMPACT MODIFIER FOR BLENDED VINYL CHLORIDE RESIN COMPOSITION HAVING EXCELLENT IMPACT STRENGTH, WEATHER-RESISTANCE, AND PROCESSABILITY, WHICH COMPRISES STEPS OF: A. EMULSION-POLYMERIZING IN THE PRESENCE OF A POLYMERIZATION CATALYST A MOMONER MIXTURE SELECTED FROM THE GROUP CONSISTING OF A MIXTURE OF 60 TO 95% BY WEIGHT OR ACRYLIC ACID ALKYL ESTER AND 5 TO 40% BY WEIGHT OF BUTADIENE, AND A MIXTURE OF 40 TO 95% BY WEIGHT OF ACRYLIC ACID ALKYL ESTER, 5 TO 40% BY WEIGHT OF BUTADIENE, AND 0.1 TO 30% BY WEIGHT OF METHYLMETHACRYLATE IN THE PRESENCE OF FROM 0.01 TO 3% BY WEIGHT OF A CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF DIVINYL BENZENE, DIVINYL TOLUENE, ETHYLENE GLYCOL DIMETHACRYLATE, DIETHYLENE GLYCOL DIMETHACRYLATE, AND TRIETHYLENE GLYCOL DIMETHACRYLATE TO PRODUCE A CROSS-LINKED COPOLYMER RUBBER LATEX; B. PROVIDING MOMONER COMPONENT IN A QUANTITY OF 50 TO 25 PARTS BY WEIGHT, WHICH COMPONENT CONSISTS OF 10 TO 90% BY WEIGHT OF STYRENE, 90 TO 10% BY WEIGHT OF METHYLMETHACRYLATE, AND 0.01 TO 3% BY WEIGHT OF A CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF DIVINYL BENZENE, DIVINYL TOLUENE, ETHYLENE GLYCOL DIMETHACRYLATE, DIETHYLENE GLYCOL DIMETHACRYLATE, AND TRIETHYLENE GLYCOL DIMETHACRYLATE; C. DIVIDING SAID MONOMER COMPONENTS INTO FIRST AND SECOND GRAFTING COMPONENTS, SAID FIRST GRAFTING COMPONENT BEING COMPOSED OF STYRENE AND METHYLMETHACRYLATE WITH STYRENE AS THE PRINCIPAL CONSTITUENT AND CONTAINING THEREIN THE CROSS-LINKING AGENT, AND SAID SECOND GRAFTING COMPONENT BEING COMPOSED OF METHYLMETHACRYLATE ALONE AND CONTAINING THEREIN THE CROSS-LINKING AGENT; D. ADDING SAID FIRST GRAFTING COMPONENT TO 50 TO 75 PARTS BY WEIGHT OF SAID CROSS-LINKED COPOLYER RUBBER LATEX TO BE GRAFT-POLYMERIZED THEREUPON; E. FURTHER ADDING SAID SECOND GRAFTING COMPONENT TO SAID GRAFT-POLYMERIZED COPOLYMER RUBBER LATEX TO BE FURTHER GRAFTED THEREUPON; AND F. RECOVERING THE MULTI-COMPONENT TYPE RESIN FROM SAID GRAFT-POLYMERIZED RUBBER LATEX THROUGH THE PROCESS STEPS OF ACID DEPOSITION, SALTING-OUT, DEHYDRATION, OR DESICCATION.