Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
203 words
IN THE SUSPENSION POLYMERIZATION PROCESS FOR THE PRODUCTION OF POLYMERIZATES SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERIZATES CONTAINING AT LEAST 80% OF POLYVINYL CHLORIDE, WITH LOW POLYMER DEPOSITS, WHICH COMPRISES THE STEPS OF MIXING (1) MONOMERS SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND MIXTURES OF VINYL CHLORIDE WITH UP TO 20% BY WEIGHT OF OLEFINICALLY MONOUNSATURATED COMPOUNDS COPOLYMERIZABLE WITH VINYL CHLORIDE, (2) AN OIL-SOLUBLE FREE-RADICAL-FORMING POLYMERIZATION CATALYST, (3) SUSPENSION STABILIZERS INCLUDING PROTECTIVE COLLOIDS, AND, OPTICALLY, OTHER POLYMERIZATION AIDS, AND (4) WATER, HEATING SAID MIXTUE UNDER AGITATON TO A POLYMERZATION TEMPERTURE OF BETWEEN 0*C TO 80*C. AND RECOVERING SAID POLYMERIZATES, THE IMPROVEMENT WHICH CONSISTS IN USING 0.001 TO 1% BY WEIGHT, BASED ON THE MONOMERS, OF AT LEAST ONE PER COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN UNBRANCHED DIALKANOYLPEROXIDE HAVING FROM 12 TO 18 CARBON ATOMS IN EACH ALKANOYL AND AN UNBRANCHED DIALKYLPEROXY DICARBONATE HAVING 12 TO 18 CARBON ATOMS IN THE ALKYL, AS SAID OIL-SOLUBLE FREE-RADICAL-FORMING PPOLYMERIZATION CATALYST, ADDING FROM 5 TO 35 PPM, BASED ON H MONOMERS, OF A WURSTER''S SALT TO THE POLYMERIZATION CHANGE, AND CONDUCTING SAID POLYMERIZATION AT A PH OF FROM 3.5 TO 7, WHEREBY A POLYMERIZATE IS RECOVERED WITH LOW POLYMER DEPOSITS.
Claim 2
Dependent Claim
203 words
IN THE SUSPENSION POLYMERIZATION PROCESS FOR THE PRODUCTION OF POLYMERIZATES SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERIZATES CONTAINING AT LEAST 80% OF POLYVINYL CHLORIDE, WITH LOW POLYMER DEPOSITS, WHICH COMPRISES THE STEPS OF MIXING (1) MONOMERS SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND MIXTURES OF VINYL CHLORIDE WITH UP TO 20% BY WEIGHT OF OLEFINICALLY MONOUNSATURATED COMPOUNDS COPOLYMERIZABLE WITH VINYL CHLORIDE, (2) AN OIL-SOLUBLE FREE-RADICAL-FORMING POLYMERIZATION CATALYST, (3) SUSPENSION STABILIZERS INCLUDING PROTECTIVE COLLOIDS, AND, OPTICALLY, OTHER POLYMERIZATION AIDS, AND (4) WATER, HEATING SAID MIXTUE UNDER AGITATON TO A POLYMERZATION TEMPERTURE OF BETWEEN 0*C TO 80*C. AND RECOVERING SAID POLYMERIZATES, THE IMPROVEMENT WHICH CONSISTS IN USING 0.001 TO 1% BY WEIGHT, BASED ON THE MONOMERS, OF AT LEAST ONE PER COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN UNBRANCHED DIALKANOYLPEROXIDE HAVING FROM 12 TO 18 CARBON ATOMS IN EACH ALKANOYL AND AN UNBRANCHED DIALKYLPEROXY DICARBONATE HAVING 12 TO 18 CARBON ATOMS IN THE ALKYL, AS SAID OIL-SOLUBLE FREE-RADICAL-FORMING PPOLYMERIZATION CATALYST, ADDING FROM 5 TO 35 PPM, BASED ON H MONOMERS, OF A WURSTER''S SALT TO THE POLYMERIZATION CHANGE, AND CONDUCTING SAID POLYMERIZATION AT A PH OF FROM 3.5 TO 7, WHEREBY A POLYMERIZATE IS RECOVERED WITH LOW POLYMER DEPOSITS.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein from 0.005 to 0.5% by weight, based on the monomers, of said percompound is employed.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein said percompound is an unbranched dialkanoyl-peroxide having from 12 to 18 carbon atoms in each alkanoyl.
Claim 5
Dependent Claim
9 words
The process of claim 3 wherein dilauroylperoxide is employed.
Claim 6
Dependent Claim
22 words
The process of claim 1 wherein said percompound is an unbranched dialkylperoxy dicarbonate having 12 to 18 carbon atoms in the alkyl.
Claim 7
Dependent Claim
10 words
The process of claim 5 wherein dicetylperoxy dicarbonate is employed.
Claim 8
Dependent Claim
12 words
The process of claim 5 wherein said dialkylperoxy dicarbonate is distearylperoxy dicarbonate.
Claim 9
Dependent Claim
17 words
The process of claim 1 wherein said olefinically mono-unsaturated compound copolymerizable with vinyl chloride is vinyl acetate.