The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2003
Filed:
Jan. 22, 2001
Applicant:
Inventors:
Koji Takahashi, Waki-cho, JP;
Koji Nakamachi, Waki-cho, JP;
Hiroji Niimi, Waki-cho, JP;
Shoji Hiraoka, Waki-cho, JP;
Masayuki Sakai, Waki-cho, JP;
Hitoshi Tsuboi, Waki-cho, JP;
Assignee:
Mitsui Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29B 9/06 ; B29B 9/12 ; C08F 2/010 ; C08G 6/316 ; C08G 6/318 ;
U.S. Cl.
CPC ...
B29B 9/06 ; B29B 9/12 ; C08F 2/010 ; C08G 6/316 ; C08G 6/318 ;
Abstract
A process for preparing polyester pellets which involves blending polyethylene terephthalate and polyethylene isophthalate copolymer before solid state polymerization, the polyethylene isophthalate copolymer being composed of dicarboxylic acid constituent units derived from dicarboxylic acids containing terephthalic acid and isophthalic acid and diol constituent units derived from diols containing ethylene glycol and 1,3-bis(2-hydroxyethoxy)benzene, palletizing the blend and crystallizing the pellets.