Patent · US Expired

Production of sound-damping and energy-absorbing polyurethane foams

US6316514A · kind A · utility

19Cited by

2References

18Claims

0Family size

Assignee

BASF SE

Inventors

Peter Falke · Schwarzheide, DE
Inge Rotermund · Ortrand, DE
Klaus Schmutzer · Odelzhausen, DE
Kirsten Schmaler · Finsterwalde, DE

Key dates

Filing date	May 24, 2000
Grant date	Nov 13, 2001
Priority date	—
Expiry date	May 24, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S521/914
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Sound-damping and energy-absorbing flexible PUR foams are produced by reacting organic and/or modified organic polyisocyanates (a) with a polyetherol mixture (b) and, if desired, further compounds (c) bearing hydrogen atoms which are reactive toward isocyanates, in the presence of water and/or other blowing agents (d), catalysts (e) and, if desired, further auxiliaries and additives (f).

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