公开(公告)号：EP1816120A1

公开(公告)日：2007-08-08

申请号：EP07075113.6

申请日：2002-10-02

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

Inventor： Ionkin, Alex Sergey

IPC: C07C253/30 ,  C07C255/24 ,  B01J27/043

CPC classification number: C07C253/30 ,  C07C255/24

Abstract: Provided is a selective hydrogenation process for producing aminonitriles by contacting the corresponding dinitriles with a hydrogen-containing fluid in the presence of a hydrogenation catalyst, a solvent and tetraalkylammonium hydrogen sulfide compounds.

Abstract translation: 本发明提供了一种用于通过在氢化催化剂，溶剂和四烷基铵硫化氢化合物存在下使相应的二腈与含氢流体接触来制备氨基腈的选择性氢化方法。

公开(公告)号：EP1540052B1

公开(公告)日：2007-08-01

申请号：EP03749476.2

申请日：2003-09-05

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

Inventor： STEELE, Ronald, E.

IPC: D01F6/60 ,  C08G69/06 ,  C08G69/30 ,  D01D4/04

CPC classification number: D01F6/60 ,  C08G69/06 ,  C08G69/30 ,  D01D4/04 ,  Y10T428/2929

Abstract: A process for making a synthetic melt spun polyamide filament in a solid phase polycondensation apparatus is disclosed. The flow rate of the purge (make-up) gas to the apparatus is increased, and the overall pressure in the apparatus is decreased, as compared to solid phase polycondensation apparatus of the prior art. As a result, the removal of the thermal degradation impurity from the polymer flake contributes to improving the yarn quality and at the same time, extends the spinneret wipe life.

公开(公告)号：EP1786758A1

公开(公告)日：2007-05-23

申请号：EP05793873.0

申请日：2005-09-09

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

Inventor： OSTERMAIER, John J.

IPC: C07C209/48 ,  C07C253/34

CPC classification number: C07C209/86 ,  C07C253/34 ,  C07C211/12 ,  C07C255/24

Abstract: The invention relates to the field of separation by distillation of 6-aminocapronitrile (ACN) and hexamethylenediamine (HMD) from a mixture comprising ACN, HMD, tetrahydroazepine (THA), adiponitrile (ADN) and low boilers (LB). Also disclosed is a method for producing a distillate stream comprising HMD; a side draw stream comprising ACN, THA and low levels of dimers of ACN and HMD; and a tails stream comprising ACN, THA and substantially higher levels of dimers of ACN and HMD than found in the side draw stream. The side draw stream is particularly suitable for use in the production of caprolactam since the low levels of dimers of ACN and HMT do not greatly affect the catalyst life in the caprolactam production process. The tails stream can be further distilled to produce a tails distillate stream comprising CAN and THA, which can be recycled back to the first distillation column, futher increasing recovery of CAN from the feed stream. Process conditions of the method of the invention disfavor the production of 2-cyanocyclopentylideneimine (CPI).

公开(公告)号：EP1784352A1

公开(公告)日：2007-05-16

申请号：EP05778489.4

申请日：2005-07-15

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

Inventor： MANNING, Thomas, W., Jr. ,  MANNING, Thomas, W., Jr. ,  BING-WO, Ronald D.

IPC: B65H49/16 ,  B65H57/14 ,  B65H51/32 ,  B65H59/38

CPC classification number: B65H49/16 ,  B65H49/32 ,  B65H51/32 ,  B65H57/14 ,  B65H59/388 ,  B65H2701/31 ,  B65H2701/319

Abstract: An apparatus and method for unwinding yams with: (1) a drive roll with a polished metal finish to ensure good fiber/metal contact; (2) a drive roll/separator roll combination that enables multiple wraps of yam on the drive roll; (3) pivoting yarn holding arms for the active and standby packages that provide for easier access to the packages on a frame; and (4) in combination with the pivoting yarn holding arms, one or more pivoting legs extending from a frame so that the apparatus has a relatively small footprint and simplified yarn threading/string-up as compared to background art OETO apparatus.

公开(公告)号：EP1316585B1

公开(公告)日：2007-05-02

申请号：EP02026359.6

申请日：2002-11-25

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

Inventor： Bayer, Uwe, Dr. ,  Popp, Jürgen, Dr. ,  Wehrmeister, Thomas, Dr.

IPC: C08L67/02 ,  C08K3/04 ,  C08G63/85 ,  C08G63/87

CPC classification number: C08K3/04 ,  C08G63/85 ,  C08K3/08 ,  C08K2003/0881 ,  Y10T428/2913 ,  Y10T442/30 ,  Y10T442/60 ,  C08L67/02

公开(公告)号：EP1773932A1

公开(公告)日：2007-04-18

申请号：EP05760948.9

申请日：2005-06-21

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

Inventor： LANGRICK, Charles Richard

IPC: C08K5/09 ,  C08K5/3435 ,  C08K5/00

CPC classification number: C08K5/13 ,  C08K5/16 ,  C08K5/34

Abstract: Disclosed is a polymer additive composition and solution of the additive having more than about 5 w% solubility in a mixture of water and water soluble organic compounds comprising: a substantially water insoluble polymer additive capable of forming a salt, the polymer additive having less than about 1 w% water solubility, and a counterpart salt forming species. A process for using these polymer additive compositions and solutions is disclosed wherein the additive or the additive solution is added prior to or optionally during or optional after a polymerisation process to form polyamides or polyesters.

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.