Poly(vinyl chloride) (PVC) is one of the most versatile thermoplastics because it is compounded with a variety of additives to produce materials suitable for an extensive range of applications. By the 1970s, it was manufactured worldwide, and was one of the largest tonnage plastics. At that ...
and processing of both rigid and flexible PVC. Additives are considered in detail, particularly stabilizers, essential in PVC processing due to the inherent instability of PVC, and plasticizers which are used to reduce the glass transition temperature to produce flexible products. Some typical formulati...
A composition comprising an intimate admixture of (a) 50 to 98 parts by weight of a vinyl chloride polymer having an inherent viscosity of at least 0.4, and (b) 50 to 2 parts by weight of an addition terpolymer containing acrylonitrile, indene and a third monomer selected from methyl ...
The electrolysis of salt water produces chlorine. The chlorine is then combined with ethylene that has been obtained from oil. The resulting element is ethylene dichloride, which is converted at very high temperatures to vinyl chloride monomer. These monomer molecules are polymerized forming polyvinyl ...
There's a place for vinyl in nearly every project - as long as you require products that are easy-to-maintain, durable and attractive. Inherent in the vinyl manufacturing process is the ability to formulate products in virtually any color and with any number of performance qualities - including...
Despite its commercial importance,poly(vinyl chloride)(PVC)has inherent deficiencies tliat include low impact strength,poor thermal stability and high melt viscosity.There are numerous reported studies describing various approaches that have been used for the modification of the properties of PVC.These ...
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741. These prior art hydrogel polymers suffer from several inherent problems: (a) all contain hydrolyzable ester or amide linkages, (b) all may contain toxic residual monomers or oligomers that can be released into the eye, (c) most lenses are made by either of two procedures, one requiring...
Polymer 50/50 Poly DL Lactideco-Glycolide having inherent viscosity (IV) 0.76 dL/g was procured from Alkermes Inc., USA and Poly vinyl pyrrolidone (PVP K-90/D) of molecular weight 1300000 Da was procured from ISP technologies Inc., Wayne, NJ, USA. Two Biodegradable polymers-50/50 Poly ...
The flexible polyurethane foam is recyclable; it is recycled by various methods to remove waste stream and recover the value inherent in the material. Polyurethane plays a key role in developing sustainable buildings. Polyurethane finds high demand in building or remodeling homes, offices, and ...