Title:
ポリエステルの発泡および他の溶融加工における処理量の増大
Document Type and Number:
Japanese Patent JP3639304
Kind Code:
B2
Abstract:
Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.
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Inventors:
Rotter, George Edmond
Mercuist, John Leslie
Cian, Weilog
Tsai, Bo Chang
Kerry, John Joseph
Mercuist, John Leslie
Cian, Weilog
Tsai, Bo Chang
Kerry, John Joseph
Application Number:
JP51734794A
Publication Date:
April 20, 2005
Filing Date:
January 28, 1994
Export Citation:
Assignee:
BP Corporation North America, Inc.
International Classes:
A47J27/00; C08G63/91; C08J9/00; C08J9/04; C08K5/09; C08L67/00; C08L67/02; (IPC1-7): C08L67/02; A47J27/00; C08G63/91; C08J9/04; C08K5/09
Domestic Patent References:
| JP2150434A |
Attorney, Agent or Firm:
Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi