Vinyl heat stabilizers excel in pipe & windows. (Keeping up with Additives).Two new heat stabilizers from Crompton Corp., Middlebury; Conn., reportedly offer cost-performance advantages in PVC PVC: see polyvinyl chloride. PVC in full polyvinyl chloride Synthetic resin, an organic polymer made by treating vinyl chloride monomers with a peroxide. window profiles and pipe. * Mark 2289 is a sulfur-free tin maleate maleate /mal·e·ate/ (mal´e-at) any salt or ester of maleic acid. ma·le·ate n. 1. A salt of maleic acid. 2. An ester of maleic acid. stabilizer/lubricant one-pack additive formulation that reportedly provides improved outdoor weatherability in rigid PVC window profiles. Specifically designed for environments with intense solar exposure--such as the desert Southwest--this stabilizer stabilizer: see airplane. is said to provide an added measure of protection against both heat and uv light. It reportedly prevents the yellowing and chalking typical with tin mercaptides in such exposure conditions. After 18-month testing in the Southwest, window profiles with the new maleate showed only 1.5 Delta Lb units of yellow-blue shift compared with 6 units of change for a profile containing a workhorse work·horse n. 1. Something, such as a machine, that performs dependably under heavy or prolonged use: "the 50-year-old DC-3 ... tin mercaptide. Typical use levels of this white, free-flowing powder are 4 to 4.25 phr. It sells for around $5/lb. * Mark 2910 liquid stabilizer/lubricant is said to offer both improved performance and lower cost in PVC pipe. This self-lubricating stabilizer eliminates the need for paraffin wax paraffin wax Mixture of organic compounds traditionally derived from petroleum but also obtained synthetically. It usually consists of alkane hydrocarbons (also called paraffins) and is used for coating and sealing, for candles, and in floor waxes, lubricants, waterproofing . It also imparts better gloss and minimizes plate-out. Tel: (203) 573-2000, www.cromptoncorp.com |
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