An improved process for making heat-stable polystyrol
Реферат: Heat-stable polystyrol is prepared by heating polystyrol at a raised temperature but below the decomposition temperature, that is, below about 160 DEG C. until the softening point is increased to above 80 DEG C. Specifications 243,768, 307,936, [both in Class 2 (iii)], 355,790, and 401,500 are referred to.
EXPANDABLE GRANULATES BASED ON VINYL-AROMATIC POLYMERS HAVING AN IMPROVED EXPANDABILITY AND PROCESS FOR THE PREPARATION THEREOF
Номер патента: US20140371335A1. Автор: Casalini Alessandro,Ponticiello Antonio,Ghidoni Dario,Felisari Riccardo. Владелец: Polimeri Europa S.p.A.. Дата публикации: 2014-12-18.