公开(公告)号：EP1448620B1

公开(公告)日：2008-06-04

申请号：EP02791322.7

申请日：2002-11-26

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

Inventor： QIU, Weiming ,  COBB, Michael, W.

IPC: C08F8/40 ,  C08C19/24 ,  B01J31/18

CPC classification number: C08F8/40 ,  B01J31/1658 ,  B01J31/1845 ,  B01J31/185 ,  B01J31/1875 ,  B01J2231/321 ,  B01J2231/322 ,  B01J2231/323 ,  B01J2231/52 ,  B01J2231/641 ,  B01J2531/822 ,  B01J2531/824 ,  B01J2531/827 ,  B01J2531/828 ,  B01J2531/845 ,  B01J2531/847 ,  C07C45/50 ,  C07F9/145 ,  C08C19/24 ,  C07C47/02

Abstract: Supported bis(phosphorus) ligands are disclosed for use in a variety of catalytic processes, including the isomerization, hydrogenation, hydroformylation, and hydrocyanation of unsaturated organic compounds. Catalysts are formed when the ligands are combined with a catalytically active metal, such as nickel.

公开(公告)号：EP1252220B1

公开(公告)日：2008-04-09

申请号：EP00983948.1

申请日：2000-12-07

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

Inventor： ZAHR, George, E.

IPC: C08G69/48 ,  D01F6/60

CPC classification number: C08G69/48 ,  D01F1/10 ,  D01F6/60 ,  Y10T428/2913 ,  Y10T428/2967 ,  Y10T428/2969

Abstract: A process for increasing the relative viscosity (RV) of a reactant polyamide and to products produced by the process. The process includes contacting the reactant polyamide and a chain extender compound, forming the product, and quenching the product when its RV is near its maximum calculated RV value.

公开(公告)号：EP1456452B1

公开(公告)日：2008-03-19

申请号：EP02784800.1

申请日：2002-12-17

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

Inventor： ZAFIROGLU, Dimitri, P. ,  HIETPAS, Geoffrey, David

IPC: D04H3/02 ,  D04H1/04 ,  D04H1/06 ,  D04H1/42 ,  D04H5/08 ,  D02G3/02 ,  D02G3/04

CPC classification number: D04H3/14 ,  D04H1/06 ,  D04H1/50 ,  D04H1/541 ,  D04H1/55 ,  D04H3/02 ,  Y10T442/627 ,  Y10T442/629 ,  Y10T442/632 ,  Y10T442/635 ,  Y10T442/637 ,  Y10T442/69 ,  Y10T442/692 ,  Y10T442/697

Abstract: This invention relates to a method for preparing nonwoven fabrics having an improved balance of properties in the machine and cross-directions. More specifically, the invention utilizes nonwoven webs that include relatively low levels of multiple-component fibers having latent three-dimensional spiral crimp combined with fibers that do not develop spiral crimp. The latent spiral crimp of the multiple-component fibers is activated, such as by heating, under free shrinkage conditions, after formation of the nonwoven web to achieve re-orientation of the non-spirally-crimpable fibers and an improved balance of properties such as tensile strength and modulus.

公开(公告)号：EP1546226B1

公开(公告)日：2008-03-12

申请号：EP03776230.9

申请日：2003-10-03

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

Inventor： LIU, Hong ,  WALDBAUER, Robert, O., Jr. ,  YODER, Gregory, L.

IPC: C08G18/10 ,  C08G18/76 ,  C08G18/48 ,  D01F6/70

CPC classification number: D01F6/70 ,  C08G18/3228 ,  C08G18/3271 ,  C08G18/4854 ,  C08G18/7657 ,  Y10S528/906

Abstract: The invention provides spandex having improved hysteresis and a method for making such spandex. The spandex of the invention comprises the polyurethaneurea reaction product of: (a) poly(tetramethylene ether) glycol; (b) 1-isocyanato-4-[(4-isocyanatophenyl)methyl]benzene wherein the mole ratio of diisocyanate to glycol is from about 1.52 to about 2.04; and (c) a mixture of chain extenders comprising: from about 35 to about 55 mole percent ethylene diamine; and from about 45 to about 65 mole percent 1,2-propanediamine.

公开(公告)号：EP1414885B8

公开(公告)日：2007-12-26

申请号：EP02759275.7

申请日：2002-08-05

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

Inventor： WITT, Andrew, Robert ,  LEFFEW, Kenneth, Wayne

IPC: C08G63/80 ,  C08J3/12

CPC classification number: C08G63/80

Abstract: A process for increasing the rate of polymerization of low molecular weight polyester particles under solid state processing conditions whereby the progress of polymerization is preferred over the progress of crystallization for a given mass of particles.

公开(公告)号：EP1858842A1

公开(公告)日：2007-11-28

申请号：EP06738305.9

申请日：2006-03-15

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

Inventor： ALLGEIER, Alan, M. ,  OSTERMAIER, John, ,  J.SENGUPTA, Sourav, K.

IPC: C07D201/08 ,  C07D223/10

CPC classification number: C07D223/10

Abstract: The invention relates to the field of production of lactams from aminonitriles, and in particular to the production of ϵ-caprolactam by the vapor phase hydrolytic cyclization of 6-aminocapronitrile. A crude liquid caprolactam comprising ϵ-caprolactam (CL), 6-aminocapronitrile (ACN) and water obtained from a vapor phase cyclization reaction of ACN is contacted with hydrogen in the presence of a hydrogenation catalyst to convert the ACN in the crude liquid caprolactam to a product comprising hexamethylenediamine (HMD) and hexamethyleneimine (HMI). Tetrahydroazepine (THA) in the crude liquid caprolactam is converted to HMI during this hydrogenation. The HMD and HMI have lower boiling points compared to ACN and thus they are more easily separated from CL in the subsequent distillation operations. Thus a process to make CL from ACN with fewer distillation stages, and with lower pressure drop and lower base temperature, is accomplished.

公开(公告)号：EP1844014A1

公开(公告)日：2007-10-17

申请号：EP04785350.2

申请日：2004-10-01

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

Inventor： THOMAS, William, Barry ,  WHISTON, Keith ,  GARCIA-VERDUGO, Eduardo, Cepeda ,  POLIAKOFF, Martyn ,  HAMLEY, Paul Anthony

IPC: C07D213/807

CPC classification number: C07D213/803 ,  C07D213/80 ,  Y02P20/544

Abstract: A process for the production of a heteroaromatic carboxylic acid comprising contacting in the presence of a catalyst, a precursor of said carboxylic acid with an oxidant, such contact being effected with said precursor and the oxidant in an aqueous solvent comprising water under supercritical conditions or near supercritical conditions close to the supercritical point.

公开(公告)号：EP1539680B1

公开(公告)日：2007-10-17

申请号：EP03764699.9

申请日：2003-07-15

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

Inventor： OSTERMAIER, John, J. ,  SCOTT, Leon, S. ,  HASTINGS, James, D.

IPC: C07C253/34 ,  C07C255/04

CPC classification number: B01D3/143 ,  B01D3/146 ,  C07C253/34 ,  Y10S203/09 ,  Y10S203/20 ,  C07C255/09

Abstract: Process for the recovery of substantially pure adiponitrile (ADN) from a mixture of adiponitrile, aminocapronitrile and hexamthylenediamine, comprising two sequential distillations, the first of which involves distilling the mixture in a distillation column at a head pressure that causes at least 70 % of the ADN to go into the distillate, along with bishexamethylenetriamine (BHMT) and 2-cyanocyclopentylideneimine (CPI), and the second of which involves distilling the distillate in a second distillation column at a head pressure that causes the formation of a distillate comprising a minimum temperature azeotrope between ADN and BHMT and a bottoms product that is ADN substantially free of both BHMT and CPI.

公开(公告)号：EP1838668A1

公开(公告)日：2007-10-03

申请号：EP05854931.2

申请日：2005-12-21

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

Inventor： POLIAKOFF, Martyn ,  HAMLEY, Paul ,  CEPEDA, Eduardo Garcia-verdugo ,  AIRD, Graham Robert ,  COOTE, Alexander Stuart ,  YAN, Chong ,  THOMAS, William Barry ,  PEARSON, Ian

IPC: C07D201/08

CPC classification number: C07D201/08

Abstract: A process for the manufacture of a lactam from an amino alkane nitrile and/or its hydrolysis derivatives, comprising reacting a solution comprising at least about 5% by weight amino alkane nitrile in water at a temperature of greater than or equal to about 350°C and at a pressure of greater than about 250 bar. Optionally, a dilute acid may be added as a catalyst.

公开(公告)号：EP1689920B1

公开(公告)日：2007-08-15

申请号：EP04812489.5

申请日：2004-11-29

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

Inventor： LIAO, Tianyi

IPC: D02G3/40

CPC classification number: D02G3/404 ,  D01H5/00 ,  D02G3/04 ,  D02G3/328 ,  D02G3/36 ,  D02G3/406 ,  Y10T442/3008 ,  Y10T442/3065 ,  Y10T442/313 ,  Y10T442/3301 ,  Y10T442/3317 ,  Y10T442/406 ,  Y10T442/413 ,  Y10T442/425 ,  Y10T442/438

Abstract: Composite yarns, comprising one or more elastomeric fibers and hard yarns, are formed by adhering the elastomeric fibers and hard yarns together using a size material. The size-covered composite yarn can be used in weaving and knitting to make stretch fabrics with desired garment characteristics. The size material may be removed by subsequent wet fabric processing.