POLYMER COMPOSITION FOR MANUFACTURING DECORATIVE FINISHING MATERIALS Russian patent published in 1999 - IPC

FIELD: polymer materials. SUBSTANCE: composition containing polyvinylchloride resin, dioctyl phthalate, and mineral filling agent is distinguished by including, as filling agent, (indicated granulometric distributions, mcm followed by wt %): sand - above 200, 10-11; 100-200, 23-25; 50-100, 16-17; below 5, 25-30; talk - above 45, 1-1.5; 20-45, 19- 20; 10-20, 29-32; 5-10, 20-22; below 5, 25-30; chalk - above 20, 1-20; 2-20, 58-60; below 2, 1-22; mica - above 50, 8-9; 20-50, 12-15; 10-20, 14-15; below 10, 61-66. Percentages of components are as follows, wt %: polyvinylchloride resin, 18-20; dioctyl phthalate, 10-12; sand, 45-50; talk, 7-9; mica, 8-9; and chalk, 5-8. Materials can be manufactured in the form of sheets. EFFECT: increased fire resistance and reduced content of expensive polyvinylchloride resin. 2 tbl