Database WPIL, Week 8823, Derwent Publications Ltd., AN 88-158202, JP-A-63 098 431, Apr. 28, 1988, "Moulding Styrenic Polymer Providing High Heat-Resistance--Involves Heat-Treating Non-Crystalline Styrenic Polymer Moulding Having Syndiotactic Structure". |
Database WPIL, Week 8949, Derwent Publications Ltd., AN 89-361739, JP-A-1 272 608, Oct. 31, 1989, "Syndiotactic Polystyrene Alpha-Crystalline Structure--Is Prepared by Melting Starting Polymer, Cooling and Heating Solidified Polymer to Crystallise". |