Licensed to About.com, Inc. Definition: Moleskine is a brand of notebook that comes in various formats, sizes, and papers. The covers are usually black leather (some special editions have silk, for instance, and diaries come in red) and there is an elastic band for keeping it closed.
3-3-4 Viscosity Stability of the aqueous solution The viscosity of PVA(Polyvinyl Alcohol) aqueous solution for fully hydrolyzed grades increases, according to storage time, and a gelation occurs.
Chlorinated polyvinyl chloride (CPVC) is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin which is significantly more flexible and can withstand higher temperatures than standard PVC. Uses include hot and cold water pipes, and industrial liquid handling. 1 History.