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.
In fact there are several types of vinyl-ethylene vinyl acetate (EVA), polyvinyl acetate (PVA) and polyvinyl butyral (PVB) on top of both PEVA and PVC. We already know that PVC stands for polyvinyl chloride and the Healthy Building Network further breaks down why PVC is so toxic.