公开(公告)号：EP1425257B1

公开(公告)日：2007-03-21

申请号：EP02761555.8

申请日：2002-09-04

Applicant: INVISTA Technologies S.à.r.l.

Inventor： THAYER, Chester, Arthur, II

IPC: C07C51/34 ,  C07C55/02

CPC classification number: C07C51/34 ,  Y02P20/142 ,  C07C55/21 ,  C07C55/14

Abstract: A process for making an alkanedioic acid in which a mixture of a cycloalkene, a base and a solvent is contacted simultaneously with both oxygen and ozone at a temperature between 40 and 60 degrees Centigrade.

公开(公告)号：EP1761667A1

公开(公告)日：2007-03-14

申请号：EP05740351.1

申请日：2005-04-22

Applicant: INVISTA Technologies S.à.r.l.

Inventor： MARTIN, Kenneth E.

IPC: D04H13/00 ,  A61F13/15

CPC classification number: D04H13/00

Abstract: This invention relates to stretchable nonwoven sheets prepared by substantially uniformly impregnating a necked nonwoven substrate or an easily extensible as-made nonwoven substrate with an elastomeric polymer by treatment with an elastomeric polymer solution. The nonwoven sheet is useful in the manufacture of diapers and other hygiene articles.

公开(公告)号：EP1456017B1

公开(公告)日：2007-03-07

申请号：EP02797526.7

申请日：2002-12-13

Applicant: INVISTA Technologies S.à.r.l.

Inventor： ZAFIROGLU, Dimitri, P. ,  HIETPAS, Geoffrey, David ,  MASSOUDA, Debora, Flanagan ,  FORD, Thomas, Michael

IPC: B32B5/26 ,  B32B5/04 ,  D04H3/00

CPC classification number: D01F8/14 ,  B32B5/04 ,  B32B5/26 ,  D04H1/4374 ,  D04H1/4391 ,  D04H1/559 ,  D04H3/018

Abstract: This invention relates to an improved method for preparing stretchable multiple-component bonded composite sheets which involves bonding a fibrous layer of spirally-crimpable multiple-component continuous filaments or staple fibers to one or more non-spirally-crimpable layers using an array of intermittent mechanical, chemical, or thermal bonds, and heating the bonded composite to activate the spiral crimp of the fibers in the spirally-crimpable layer. Multi-layer nonwoven fabrics prepared according to the method of the current invention have an improved combination of strength, aesthetics, stretch-recovery properties, and textile hand and drape compared to multiple-component nonwoven fabrics known in the art.

公开(公告)号：EP1549789B1

公开(公告)日：2006-12-06

申请号：EP03770647.0

申请日：2003-10-03

Applicant: INVISTA Technologies S.à.r.l.

Inventor： HAMILTON, Lorne, M. ,  HIETPAS, Geoffrey, D. ,  PAYET, Charles, R. ,  SMITH, Steven, W.

IPC: D02G3/04 ,  D02G3/32

CPC classification number: D02G3/045 ,  D02G3/326 ,  Y10T442/30 ,  Y10T442/3146 ,  Y10T442/40 ,  Y10T442/444

Abstract: The invention provides a spun yarn comprising polyester bicomponent staple fiber and acrylic staple fiber. The invention further provides a method for making spun yarns and fabrics. The spun yarn of the invention comprises at least 30 weight percent acrylic staple fiber and from 17 to 45 weight percent polyester bicomponent staple fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate), based on the total weight of the yarn.

公开(公告)号：EP1699846A1

公开(公告)日：2006-09-13

申请号：EP04798758.1

申请日：2004-11-01

Applicant: INVISTA Technologies S.à.r.l.

Inventor： GARDNER, Michael, William ,  CUNNINGHAM, Jill, Barbara ,  WINTER, Derek, J. ,  JENKINS, Stephen, D.

IPC: C08G63/80 ,  C08G63/185

CPC classification number: C08G63/80 ,  C08G63/6856 ,  C08G63/6886

Abstract: A method for enhancing solid state polymerization of polyethylene terephthalate is disclosed in which at least one monomeric unit of diacid and/or dimethyl ester comprising at least one pendant chemical side group is copolymerized with a diol and a diacid or a dimethyl ester. The at least one pendant chemical side group may include groups chosen from tertiary butyl, hexyl, pentyl, butyl, propyl, ethyl, methyl, nitrosyl (NO2) and sulfonyl (SO2) groups.

公开(公告)号：EP1587621B1

公开(公告)日：2006-08-02

申请号：EP04702233.0

申请日：2004-01-14

Applicant: INVISTA Technologies S.à.r.l.

Inventor： JACKSON, Scott, C. ,  MCKINNEY, Ronald, J.

IPC: B01J37/16 ,  B01J31/18 ,  B01J31/30 ,  C07F15/04 ,  C07C253/10

CPC classification number: B01J31/30 ,  B01J31/185 ,  B01J31/1875 ,  B01J37/16 ,  B01J2231/32 ,  B01J2531/847 ,  C07C253/10 ,  C07C255/09

Abstract: A process for preparing a hydrocyanation catalyst comprising contacting a bidentate phosphorous-containing ligand with nickel chloride in the presence of a nitrile solvent and a reducing metal which is more electropositive than nickel the nickel chloride being introduced as an aqueous solution and the water being removed concurrently with the reduction reaction by azeotropic distillation, or prior to the reduction with NiC12 by azeotropic distillation.

公开(公告)号：EP1678114A1

公开(公告)日：2006-07-12

申请号：EP04794920.1

申请日：2004-10-14

Applicant: INVISTA Technologies S.à.r.l.

Inventor： SUTRADHAR, Bhagya, Chandra

IPC: C07C51/43 ,  C07C55/14

CPC classification number: C07C51/43 ,  C07C55/14

Abstract: Process for crystallization of adipic acid from a nitric acid oxidation product of cyclohexane in which process the oxidation product is subject to crystallization in a series of crystallizers of decreasing crystallization temperature.

公开(公告)号：EP1401914B1

公开(公告)日：2006-03-01

申请号：EP02748058.1

申请日：2002-05-29

Applicant: INVISTA Technologies S.à.r.l.

Inventor： FERGUSSON, Stuart, B. ,  MARCHILDON, Ernest, Keith ,  MUTEL, Ahmet, Turgut

IPC: C08G69/28 ,  C08G69/36 ,  C08G69/16 ,  C08G69/04 ,  C08G69/08

CPC classification number: C08G69/16 ,  C08G69/04 ,  C08G69/08 ,  C08G69/28 ,  C08G69/36

Abstract: Process for making Nylon 6,6 by reacting adiponitrile, hexamethylenediamine and steam in a multistage distillation column reactor.

公开(公告)号：EP1626853A1

公开(公告)日：2006-02-22

申请号：EP03770629.8

申请日：2003-10-02

Applicant: INVISTA Technologies S.à.r.l.

Inventor： STEINER, James, L.

IPC: B29C47/00 ,  B29C47/92 ,  D01D5/08 ,  D01F1/10 ,  D01F6/62

CPC classification number: B29C47/0004 ,  B29C47/0014 ,  B29C47/92 ,  B29C49/06 ,  B29C2035/0822 ,  B29C2947/92695 ,  B29C2947/92828 ,  B29C2947/92866 ,  B29K2067/00 ,  B29K2105/258 ,  B29K2667/00 ,  B29L2031/7158 ,  C08G63/916 ,  D01F1/10 ,  D01F6/62

Abstract: The present invention relates to a process for making a lower molecular weight polymer from a solid stated higher molecular weight feed stock chip. In particular, the molecular weight of an industrial resin or a bottle resin is reduced in a controlled manner by the introduction of ethylene glycol. If the industrial resin is to be employed for industrial fibers, the ethylene glycol may be added at the extruder for spinning the industrial fiber. On the other hand, should the high molecular weigh chip be used for bottle resin, the molecular weight may be reduced by the introduction of ethylene glycol at the extruder for injection molding of preforms of a lower molecular weight. The ethylene glycol/polymer ratio is determined by the reduction in molecular weight that is required. The preferred resin is polyester polymer or copolymer, and especially polyethylene terephthalate (PET). The present invention comprises a process for reducing the molecular weight of a solid stated polyester feed stock resin comprising obtaining polyester resin having an IV greater than about 0.8 dl/g; and mixing ethylene glycol with said polyester wherein said ethylene glycol is present in a stoichiometric amount to reduce the IV to the required level.

公开(公告)号：EP1430950B1

公开(公告)日：2006-02-22

申请号：EP04075576.1

申请日：2000-09-19

Applicant: INVISTA Technologies S.à.r.l.

Inventor： Tam, Wilson ,  Schwiebert, Kathryn Eileen ,  Druliner, Joe Douglas

IPC: B01J31/06 ,  B01J31/16 ,  C07C45/50 ,  B01J31/18

CPC classification number: C08G63/6924 ,  B01J31/06 ,  B01J31/1658 ,  B01J31/185 ,  B01J31/28 ,  B01J2231/321 ,  B01J2531/821 ,  B01J2531/822 ,  B01J2531/827 ,  B01J2531/828 ,  C07C45/50 ,  C07C67/347 ,  C07C253/30 ,  C07F9/145 ,  C08G63/692 ,  C07C69/716 ,  C07C255/17 ,  C07C47/02