| US 7,572,862 B2 | ||
| Reduced melt viscosity rigid polyvinylchloride (PVC) composition | ||
| Mark Lavach, Allentown, Pa. (US); Paul Lavallee, Berwyn, Pa. (US); Jason Pomante, West Chester, Pa. (US); Wayne Ranbom, Hopewell, N.J. (US); Lisa Rachwal, Harleysville, Pa. (US); and Stephane Girois, Brignais (France) | ||
| Assigned to Arkema Inc., Philadelphia, Pa. (US) | ||
| Filed on Feb. 08, 2005, as Appl. No. 11/53,364. | ||
| Prior Publication US 2006/0175728 A1, Aug. 10, 2006 | ||
| Int. Cl. C08L 27/06 (2006.01); C08L 25/02 (2006.01); C08L 33/06 (2006.01); B29C 47/00 (2006.01) | ||
| U.S. Cl. 525—239 [525/191; 525/227; 525/241] | 6 Claims |
| 1. An article formed by melt-processing having a composition comprising a rigid polyvinylchloride resin; and from 0.3 to 2.5
weight percent, based on the weight of the polyvinylchloride resin, of an acrylic terpolymer process aid comprising:
i. from 41 to 44 weight percent of methylmethacrylate monomer units;
ii. from 22 to 24 weight percent of butyl acrylate monomer units; and
iii. from 33 to 36 weight percent of styrene monomer units.
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