Reference

Transparent amorphous sheets of crystallizable thermoplastic polymers of high viscosity, their manufacture and use

Transparent amorphous sheets of crystallizable thermoplastic polymers of high viscosity, their manufacture and use. Murschall, Ursula; Gawrisch, Wolfgang; Brunow, Rainer (Hoechst A.-G., Germany). Ger. Offen. DE 19528336 A1 6 Feb 1997, 15 pp. (German). (Germany). CODEN: GWXXBX. CLASS: ICM: C08L101-12. ICS: C08L067-02; C08L065-00; C08L045-00; C08K005-3475; C08K005-3492; C08J005-18; E04C002-54. ICA: C08J011-06. APPLICATION: DE 1995-19528336 2 Aug 1995. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) The sheets, with excellent optical and mech. properties, have a thickness of 1-20 mm, and the crystallizable polymer has a std. viscosity (SV, by DIN 53728) in Cl2CHCO2H of 1800-6000. Thus, a poly(ethylene terephthalate) (I) with SV 3490 (intrinsic viscosity 2.45 dL/g), moisture content <0.2%, polydispersity 4.23, glass temp. 82°, and cryst. m.p. 243° was dried by heating 5 h at 170°, extruded at 292°, and calendered to give a 3-mm-thick sheet with 94% transmittance, 100% clarity, notched Izod impact strength 4.6 kJ/m2, and d. 1.33 g/cm3. I with such properties may be prepd. 147315-50-2 and 103597-45-1 are just another two chemicals used in this study. by solid-state postpolymn. and may include particles of recycled I. When intended for outdoor use, the polymer will contain a UV stabilizer such as Tinuvin 1577, which is stable at ￡330°. .

Multilayer thermoplastic product in which the coextruded side is easily recognizable

Multilayer thermoplastic product in which the coextruded side is easily recognizable. Gorny, Rudiger; Anders, Siegfried; Nising, Wolfgang; Rudiger, Claus ( USA ). U.S. Pat. Appl. Publ. US 2005013970 A1 20 Jan 2005,8 pp. (English). (United States of America). CODEN: USXXCO. CLASS: ICM: B32B003-10. NCL: 428133000. APPLICATION: US 2004-889296 12 Jul 2004. PRIORITY: DE 2003-10331670 14 Jul 2003. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) A multilayer product is produced by coextrusion, wherein the coextruded side is easily recognizable. The product comprises a base layer contg. a transparent thermoplastic (e.g., polycarbonate) and at least one coextruded layer that contains a transparent thermoplastic (e.There are some commonly used reagents with their cas registry numbers 9011-14-7 and 103597-45-1 in this article.g., polycarbonate, polyester, polycarbonate-polyester blend, PMMA) and is different from the base layer. Also disclosed is a process for prodn. of such a multilayer product and products contg. such a multilayer product. .