ANTIFOULING MEANS AND METHOD OF OBTAINING IT Russian patent published in 2009 - IPC C08F216/06 C08F230/08 C09D129/02 C09D143/04 C08F8/12 C08F14/06 

FIELD: chemistry.

SUBSTANCE: antifouling means includes water solution, containing polyvinyl alcohol, obtained by saponification of polyvinyl ester, which contains monomer units with specific silyl group and satisfies following formulas (I) and (II): 370<P×S<9000... (I), where P stands for average viscous degree of polyvinyl alcohol polymerization, and S stands for content (mole %) of monomer units, including silyl group of formula (1), in polyvinyl alcohol; 0.2/100≤(A-B)/(B)≤75/100... (II), where A stands for content (h/mln) of silicon atoms in polyvinyl alcohol, and B stands for content (h/mln) of silicon atoms in polyvinyl alcohol, which was washed with methanol with sodium hydroxide and after that washed with methanol by extraction in Soxhlet apparatus. Invention also includes method of obtaining antifouling means, polyvinyl alcohol for antifouling means and method of obtaining polymer, in particular, polyvinylchloride, where polymerisation is carried out in reactor, whose inner wall is covered with antifouling means.

EFFECT: means is exclusive as to its viscous stability, its film water-resistance and ability to prevent deposits, growing on inner wall of polymerisation reactor, and which can prevent contamination of polymer product with extraneous substances.

13 cl, 2 tbl, 21 ex