Patent ID: 9334344
Filing Date: 2016-05-10
CPC Classification: C08F

Claim Text:
1. Process for the production of polyvinyl chloride (PVC) having a median particle diameter of from 10 to 80 μm by polymerization of vinyl chloride, characterized in that the process comprises the following process steps: (a) introduction of water, initiator(s), optionally one or more adjuvants, and some of the vinyl chloride into a container as initial charge and mixing of the constituents; (b) dispersion, and addition of one or more suspension auxiliaries with continued dispersion; (c) heating of the mixture; (d) addition of the remaining vinyl chloride; and (e) working-up of the product, wherein in step (d) the addition of the remaining vinyl chloride is effected from the beginning of the heating phase to the beginning of the work-up.