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특허 상세정보

Process for removing metal species in the presence of hydrogen and a porous material and polyester polymer containing reduced amounts of metal species

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08G-063/00    C08G-063/78    C22B-023/02    C08G-063/90    C08G-063/82    C22B-003/24    C08K-003/32   
미국특허분류(USC) 528/275; 528/272; 528/279; 528/280; 528/281; 528/285; 528/308.1; 502/102; 502/103
출원번호 US-0525872 (2012-06-18)
등록번호 US-8921509 (2014-12-30)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
인용정보 피인용 횟수 : 0  인용 특허 : 29
초록

Provided is a composition with partially aromatic polyester polymers having an It.V. of at least 0.50 dL/g, produced in an ester exchange melt phase process, having from zero or greater than zero to less than 5 ppm titanium, from zero or greater than zero to less then 10 ppm germanium, and from zero or greater than zero to less than 20 ppm manganese.

대표
청구항

1. A polyester composition, consisting of: a partially aromatic polyester polymer comprising a repeating unit of alkylene terephthalate or alkylene naphthalate, having an It.V. of at least 0.50 dL/g produced in an ester exchange melt phase process;from 2.5 to 40 ppm cobalt;about 0 ppm titanium;less than 10 ppm germanium; andless than 10 ppm manganese. 2. The composition of claim 1, obtained by cutting the composition into cut particles and subsequently crystallizing by the latent heat within the cut particles. 3. The composition of claim 2, wherein a deg...

이 특허에 인용된 특허 (29)

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  8. Millick ; III ; William H.. Hydrogenation of molten aldehydic dimethyl terephthalate. USP1978024076946.
  9. Prin,Marie; Hervieu,Pascal. Metal oxide-coated SiC foam carriers for catalysts, and catalytic systems therefor. USP2007017160838.
  10. Iwasaki Hiroshi,JPX ; Hirokane Nobuya,JPX ; Ishibashi Masayasu,JPX ; Inoki Satoshi,JPX. Method for purifying crude naphthalenedicarboxylic acid. USP1999025872284.
  11. Benzaria Jacques (Chambly FRX) Dawans Francois (Bougival FRX) Durif-Varambon Bruno (Vienne FRX) Gaillard Jean-Bernard (St. Martin D\Heres FRX). Method for recovery of alkali metal or alkaline-earth metal terephthalate and of alkylene glycol from polyethylene terep. USP1996085545746.
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  21. Elsasser A. Fred (Cincinatti OH). Process for the removal of dissolved metallic catalyst from ester products. USP1996085550264.
  22. Ledoux Marc-Jacques (Strasbourg FRX) Guille Jean-Louis (Strasbourg FRX) Pham-Huu Cuong (Strasbourg FRX) Marin Sophie (Strasbourg FRX). Production of heavy metal carbides of high specific surface area. USP1995025391524.
  23. Stautzenberger A. Lee (Nueces TX) Kunkel Robert W. (Nueces TX). Purification of diphenyl phthalates. USP1989024803295.
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