Patents Assigned to Invista North Americal S.a.r.l.
  • Guide for bonding tapes or films
    Publication number: 20070256789
    Abstract: A guide is provided to direct the film or tape into the bonding area of a bonding apparatus. The guide includes first and second curved plates which are affixed to and separated by a spacer.
    Type: Application
    Filed: June 22, 2006
    Publication date: November 8, 2007
    Applicant: INVISTA NORTH AMERICAL S.A.R.L.
    Inventor: Charles Iavarone
  • Preparation of lactams
    Publication number: 20060161000
    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.
    Type: Application
    Filed: December 21, 2005
    Publication date: July 20, 2006
    Applicant: INVISTA NORTH AMERICAL S.A.R.L.
    Inventors: Martyn Poliakoff, Paul Hamley, Chong Yan, Eduardo Cepeda, Graham Aird, Alexander Coote, Ian Pearson, William Thomas
  • Process for reducing caprolactam and its oligomers in nylon-6 pre-polymer
    Patent number: 6875838
    Abstract: Disclosed is a process for reducing low molecular weight impurities, namely caprolactam and its oligomers, from Nylon-6 pre-polymer during the preparation of Nylon-6 polymer.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: April 5, 2005
    Assignee: Invista North Americal S.a.r.l.
    Inventors: Albert W. Alsop, Carl E. Camp, John M. Iwasyk, Dilip Rajagopalan