TH45862A3 - The very rapid addition of the very rapid initiator is determined continuously during the polymer synthesis reaction. - Google Patents

Abstract

DC60 (03/10/43) This invention involves a process in which the additive peroxide is an approximation given in the mixtures in the synthesis of polymers, where, in essence, all organic peroxides which Used in Polymer synthesis process has The half-life ranges from 0.05 to 1.0 h at the polymer synthesis temperature. The addition of the peroxide is approximate, as this provides accurate control of the polymer synthesis rate and the process provides Polymers with perm level Low residual oxide This invention deals with the process in which the additive peroxide is approximated in the mixtures in the synthesis of polymers, wherein, in essence, all organic peroxides, which are used in Polymer synthesis process has The half-life ranges from 0.05 to 1.0 h at the polymer synthesis temperature. The addition of the peroxide is approximate, as this provides accurate control of the polymer synthesis rate and the process provides Polymers with perm level Low residual oxide

Claims (7)

1. The process of polymer synthesis from vinyl chloride monomer and may elect another monomer using one or more organic peroxides, with At least Some of the peroxide has been added to a Set into a mix of synthesis Polymers at the temperature under which the reaction That has been made with the effect that, by the essence, all of Organic peroxides used in the process Polymer synthesis has a half-life of 0.05 to 1.0 hours at the polymer synthesis temperature. 2. The process according to claim 1, where the added peroxide is a specified amount at a temperature The reaction was continuously added to the specified volume. 3. Process according to Clause 1 or Clause 2. With at least 10% total initiator volume. At the start of the polymer synthesis reaction or before heating the reaction mixture to the desired temperature, as in processes starting at low temperature or when the temperature of the reaction mixture is at Where such action occurs, for example, in processes starting at high temperatures The one 4. Process according to claim 3, where there is the total amount of peroxide at the initiation of The polymer synthesis process is 10 to 40% w / w. For even better, it should be 20 to 40% weight / weight. 5. Process according to any one of Clause 1 to 4 Where peroxide Or the rest Of peroxide If so, it should be 2 hours. Even better, it should be 4 hours at the reaction temperature. 6. (Co) vinyl chloride based polymer This can be obtained from the process of Claim No. 1 to No. 5. With less than 50 parts peroxide by weight Based On one million parts by weight of (cattle) polymers When measured immediately after polymer synthesis and drying (co) polymer for 1 hour at 60 ํ. 7. Use of ethylene polymer (co) polymer according to claim 6 in the shaping process that Includes heating the (co) polymer over the melting temperature of the (co) polymer.