Patents Assigned to Tokuyama Sekishi Kogyo Kabushiki Kaisha - Justia Patents Search

Patents Assigned to Tokuyama Sekishi Kogyo Kabushiki Kaisha

Method for preparation of a foam of chlorinated vinyl chloride polymer employing a lower aliphatic alcohol foaming agent

Patent number: 4165415

Abstract: A method for preparing foams of chlorinated vinyl chloride polymers is provided. The foams are prepared by impregnating the chlorinated vinyl chloride polymer with an aliphatic alcohol of from 1 to 5 carbon atoms and thereafter heating the impregnated polymer.

Type: Grant

Filed: October 28, 1976

Date of Patent: August 21, 1979

Assignee: Tokuyama Sekishi Kogyo Kabushiki Kaisha

Inventors: Terufumi Adachi, Michifumi Tanga