Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-09-18
1981-04-07
Ziegler, J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 16, 260 17A, 260 292UA, 260 292N, 260 292E, 260 296NR, 260 4585R, 525 11, 525 27, 525167, 525170, C08L 6702
Patent
active
042605415
ABSTRACT:
The invention relates to the method for producing internally plasticized poly(vinyl chloride) suitable for the purposes of earth insulation and medical care. The production method according to the invention consists in the polymerization or copolymerization of vinyl chloride in an aqueous dispersion medium in the presence of up to 50 weight %, related to vinyl chloride, of a polymeric plasticizer prepared by polyesterification of dicarboxylic acids and diols. If desired, the polymerization can be carried out also in the presence of up to 12 weight % of alkyl esters of cyanuric acid and/or the copolymer of ethylene with vinyl acetate as the stabilizers of polymer-chain structure. The polymerization is carried out to the conversion of vinyl chloride 55 to 94% at temperature -20.degree. to +80.degree. C. in the presence of an emulsifier and the resulting polymer is isolated and worked up in the known way.
REFERENCES:
patent: 2773049 (1956-12-01), Cowec
patent: 3111500 (1963-11-01), Bartl et al.
Kolinsky Miloslav
Kuska Vladislav
Lukas Rudolf
Macho Vendelin
Manas Jaroslav
Ceskoslovenska akademie ved
Ziegler J.
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