公开(公告)号：EP1032491A1

公开(公告)日：2000-09-06

申请号：EP98961743.6

申请日：1998-11-20

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： STEWART, Mark, Edward ,  CORNELL, David, Dunlap

IPC: B29C35/04 ,  B29C35/08 ,  B29D22/00

CPC classification number: C08J7/12 ,  B29C71/0009 ,  B29C71/0063 ,  B29L2031/712 ,  C08J2367/02

Abstract: A method for increasing the crystallinity of a thermoplastic container, such as a polyester, and more particularly a PET, PEN, or blend thereof bottle. The method includes the steps of hydrolyzing at least a portion of the inside surface of the bottle to reduce the molecular weight, Mn, of the polyester relative to the remainder of the bottle and crystallizing at least a portion of the inside surface. It is desirable for the inside surface to have a crystallinity greater than about 30 %. The invention further provides a thermoplastic container having an inside surface with a crystallinity greater than the remainder of the container wherein the inside crystallinity is increased utilizing the method of the invention.

公开(公告)号：EP0643744B1

公开(公告)日：1998-07-29

申请号：EP93914124.8

申请日：1993-05-24

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： STEWART, Mark, Edward ,  MASSA, Dennis, Jon

IPC: C08L71/12 ,  C08L67/02

CPC classification number: C08L71/12 ,  C08L25/18 ,  C08L67/00 ,  C08L67/02 ,  C08L69/00 ,  C08L71/123 ,  H04N3/2335 ,  C08L2666/18 ,  C08L71/00 ,  C08L2666/14 ,  C08L2666/02

Abstract: This invention relates to thermoplastic molding compositions comprising the following: (a) 5 to 95 % by weight of a polyester or a polyester, comprising: repeat units derived from terephthalic acid, ethylene glycol, and 1,4-cyclohexanedimethanol wherein the mole ratio of ethylene glycol to 1,4-cyclohexanedimethanol is from 66:34 to 98:2, said polyester having an I.V. of 0.3 dL/g to 1.2 dL/g, and (b) 5 to 95 % by weight of a polyphenylene ether. The compositions are useful for producing clear articles by injection molding or extrusion.

公开(公告)号：EP0631602A1

公开(公告)日：1995-01-04

申请号：EP93907591.0

申请日：1993-03-11

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： MEYER, Max, Frederick, Jr. ,  STEWART, Mark, Edward ,  TANT, Martin, Ray

IPC: B29C45 ,  C08L67 ,  B29K67

CPC classification number: C08L67/02 ,  C08L23/00

Abstract: This invention relates to compositions containing poly(1,4-cyclohexylenedimethylene terephthalate) (PCT) or copolyesters from terephthalic acid, 1,4-cyclohexanedimethanol and ethylene glycol, having improved impact strength at low temperatures due to the presence of an ethylene copolymer which contains repeat units from ethylene and at least 5 mole percent of a free radical polymerizable comonomer selected from the group consisting of vinyl acetate and an alkyl acrylate.