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Patent Searching and Data


Title:
CRYSTAL POLYESTER PELLET, APPLICATION THEREOF AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/002852
Kind Code:
A1
Abstract:
This crystal polyester pellet comprises a resin composition containing polyester and a complex particle. The polyester contains 25-50% by mole of terephthalic acid units, 25-49.5% by mole of ethylene glycol units, 0.5-2.5% by mole of diethylene glycol units, and 1.5-25% by mole of other co-monomer units having 5 carbons or more. The intrinsic viscosity of the polyester is 0.75-1.5 dL/g. The crystal melting enthalpy of the pellet is 20 J/g or greater. The complex particle is a complex particle of hydrotalcite and titanium dioxide. The complex particle content of the pellet is 10-300 ppm. In this manner, a copolymer PET crystal pellet causing little environmental stress can be produced by a method having excellent productivity.

Inventors:
SAKANO, Takeshi (7471, Tamashimaotoshima, Kurashiki-sh, Okayama 50, 〒7138550, JP)
TANAKA, Masanori (7471, Tamashimaotoshima, Kurashiki-sh, Okayama 50, 〒7138550, JP)
Application Number:
JP2016/069262
Publication Date:
January 05, 2017
Filing Date:
June 29, 2016
Export Citation:
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Assignee:
KURARAY CO., LTD. (1621, Sakazu Kurashiki-sh, Okayama 01, 〒7100801, JP)
International Classes:
C08L67/02; B32B15/09; B65D1/02; C08G63/672; C08G63/85; C08K3/22
Domestic Patent References:
2008-01-03
2014-02-06
2015-03-26
Foreign References:
JP2006188567A2006-07-20
JP2008007588A2008-01-17
JP2009046593A2009-03-05
JP2010209358A2010-09-24
JP2011063640A2011-03-31
JP2012077112A2012-04-19
Attorney, Agent or Firm:
SETOUCHI INTERNATIONAL PATENT FIRM (Growth-2 Building, 4-9-1 Ima, Kita-ku, Okayama-sh, Okayama 75, 〒7000975, JP)
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