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Stronger Calcium Stearate Boosts PVC Stability.


A new line of calcium stearates for PVC PVC: see polyvinyl chloride.
PVC
 in full polyvinyl chloride

Synthetic resin, an organic polymer made by treating vinyl chloride monomers with a peroxide.
 processing reportedly provides better early color and much longer heat stability. It also permits use of less tin stabilizer stabilizer: see airplane.  than with standard calcium stearates. Developed by Dover Chemical Corp., Dover, Ohio Dover is a city in Tuscarawas County, Ohio, United States. The population was 12,210 at the 2000 census. Geography
Dover is located at  (40.526545, -81.
, Doverlube TriCal products are novel over-based stearates that contain three times more calcium than typical calcium stearates.

Brabender studies reportedly have shown TriCal to increase long-term heat stability by 21% to 36%, depending on the tin stabilizer used. According to according to
prep.
1. As stated or indicated by; on the authority of: according to historians.

2. In keeping with: according to instructions.

3.
 Dover, color hold can be retained with a 25% to 50% reduction in tin stabilizer level. TriCal 30 Series (CA 32 in the stability chart pictured) is best suited to use with reverse-ester methyltin stabilizers, and TriCal 40 Series (CA 42 in the chart) is recommended with thioglycolate methyltins.

Market manager Bill Hood Bill Hood (born October 12, 1945) is a screenprint consultant, journalist, writer, and artist. Born in Hobart, Oklahoma, he was educated at Lee College and Sam Houston State University in Texas.  says PVC processors can work compounds harder without deterioration of color or performance. "They can produce thinner walls, achieve greater throughput, and get better profile performance."
COPYRIGHT 2001 Gardner Publications, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2001, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:developed by Dover Chemical Corp.
Comment:Stronger Calcium Stearate Boosts PVC Stability.(developed by Dover Chemical Corp.)
Publication:Plastics Technology
Article Type:Brief Article
Geographic Code:1USA
Date:Nov 1, 2001
Words:158
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