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.
- polyvinyl acetate (PVA), used in paints and adhesives, such as white glue, and. - polyvinyl butyral (PVB), used in safety glass films. What differentiates PVC from the other vinyls is the addition of a chlorine molecule (the. chloride âCâ in PVC and PVDC). Chlorine is the source of many of the environmental health. concerns with PVC, such as the generation of dioxin, a highly carcinogenic chemical produced in.