Title:
COPOLYESTERS PLASTICIZED WITH POLYMERIC PLASTICIZER
Document Type and Number:
WIPO Patent Application WO/2018/194829
Kind Code:
A8
Abstract:
Polyester-based films contain certain copolyesters (A) and polyester plasticizers (B). The copolyesters (A) may be selected from those in which the force required to stretch a film of the copolyester (A) by itself, from 2X to 5X, increases by less than 200%. The polyester plasticizers (B) have a weight-average molecular weight of 900 to 12,000 g/mol, and contain (i) a diol component comprising residues of diols having 2 to 8 carbon atoms, and (ii) a diacid component comprising residues of dicarboxylic acids having 4 to 12 carbon atoms. These polyester-based films are particularly useful for preparing ultra-thin LCD or OLED polarizers, because they can be stretched very thin with a high stretch ratio at lower temperatures.
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Inventors:
SHIH WAYNE (US)
CARICO KIMBERLEY (US)
CARICO KIMBERLEY (US)
Application Number:
PCT/US2018/025826
Publication Date:
December 27, 2018
Filing Date:
April 03, 2018
Export Citation:
Assignee:
EASTMAN CHEM CO (US)
International Classes:
C08J5/18; B29C47/00; B29C47/88; B29D11/00; C08J7/043; C08K5/00; G02B5/30
Attorney, Agent or Firm:
TAYLOR, Tammye, L. (US)
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