Patent · US Expired

Process for making microcellular polyurethane elastomers

US6100310A · kind A · utility

4Cited by
13References
14Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 25, 1998
Grant dateAug 8, 2000
Priority date—
Expiry dateSep 25, 2018

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08G2410/00
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Microcellular elastomers and a process for making them are disclosed. The process comprises reacting a resin component ("B" side) with an isocyanate-terminated prepolymer ("A" side). Pre-reacting the right proportion of chain extender into an "A" side that also includes a high-primary, low-unsaturation polyol is the key to making low-density (less than 0.5 g/cm.sup.3) microcellular elastomers while avoiding problems with poor processing or inferior physical properties. The process is easy to practice, and provides lighter, high-quality polyurethane products, including protective sports equipment, arm rests or steering wheels for the auto industry, and midsoles or shoe soles for footwear.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.