Amorphous transparent plate made of crystallizable thermoplastic materials
AssigneeHostaglas LTD
InventorsUrsula Murschall, Wolfgang Gawrisch, Rainer Brunow
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Abstract
The invention relates to a transparent, amorphous sheet having a thickness in the range from 1 to 20 mm which contains, as principal constituent, a crystallizable thermoplastic, where the surface gloss, measured in accordance with DIN 67530 (measurement angle 20°), is greater than 130, the light transmission, measured in accordance with ASTM D 1003, is greater than 84%, and the haze of the sheet, measured in accordance with ASTM D 1003, is less than 15%, to a process for the production of the sheet, and to the use of the sheet.
Claims16
A transparent, amorphous sheet having a thickness in the range from 1-20 mm which contains, as principal constituent, a crystallizable thermoplastic selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate a cycloolefin polymer and a cycloolefin copolymer, where the surface gloss, measured in accordance with DIN 67530 (measurement angle 20°), is greater than 130, the light transmission, measured in accordance with ASTM D 1003, is greater than 84%, and the haze of the sheet, measured in accordance with ASTM D 1003, is less than 15% and where the sheet has a degree of crystallinity of less than 5%.
Dependencies are inferred from the claim text.