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.
Coatings vary, as does the fabric. PVC (poly vinyl chloride) is falling out of favour gradually, as it's not very environmentally friendly, but PE (polyethylene aka polythene) and PEVA (a copolymer of polyethylene and EVA (ethylene vinyl acetate) are readily available.VC (poly vinyl chloride) is falling out of favour gradually, as it's not very environmentally friendly, but PE (polyethylene aka polythene) and PEVA (a copolymer of polyethylene and EVA (ethylene vinyl acetate) are readily available.