ENHANCE THE TREATMENT OF POLYESTER CORD BY USING A COMBINATION OF PHENOLIC- AND CAPROLACTAM-BLOCKED ISOCYANATES

This article describes the use of isocyanates in the production of polyester tyre cord, and describes a newly developed blend which enables use at lower temperatures. Isocyanates significantly improve the rubber-to-fabric adhesion. Adequate isocyanates are caprolactam-blocked MDI, phenol-blocked MDI, and dimerized TDI, the active ingredients being the blocked or chemically hindered isocyanate groups. Dimerized TDI can be used in a wide range of temperatures but is difficult to transform into a stable dispersion. Phenol-blocked and caprolactam-blocked MDI can be transformed although caprolactam-blocked MDI needs higher temperatures to unblock: phenol-blocked performs better at temperatures up to 230 degrees C. A combination of the two promises the best overall performance at a range of temperatures but they are supplied in different forms which are difficult to blend. A new product has been developed by blending before milling. First tests indicate that it significantly enhances the fabric or tyre cord treating process.

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  • Corporate Authors:

    UK and International Press

    Abinger House, Church Street
    Dorking, Surrey  United Kingdom  RH4 1DF
  • Authors:
    • SCHROETER, A
  • Publication Date: 2004

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00985732
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Feb 4 2005 12:00AM