__ Chloride (pvc), Durable Window Frame Material
This page is the CodyCross answer for the clue below from Inside the Spaceship, Group 1196, Puzzle 4 (New Discoveries).
Question is: __ Chloride (pvc), Durable Window Frame Material
and the answer is: POLYVINYL
Word Meaning:
POLYVINYL — (organic chemistry) Composed of, or derived from, many vinyl groups
Definitions from Wiktionary.