Patent · US Active

Low-monomer polyurethane foams

US9206282B2 · kind B2 · utility

0Cited by

6References

14Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Hans-Georg Kinzelmann · Pulheim, DE
Uwe Franken · Dormagen, DE
Christoph Lohr · Wuppertal, DE

Key dates

Filing date	Feb 3, 2014
Grant date	Dec 8, 2015
Priority date	—
Expiry date	Feb 3, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/0066
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Cross-linkable foamable composition with low content of monomeric isocyanates, containing a pre-polymer of polyester diols and/or polyether dials reacted i) with asymmetric aromatic diisocyanates to form a reaction product with OH and NCO groups, ii) subsequent addition of and reaction with symmetric aromatic diisocyanate in a quantity at least equivalent to the available OH-groups, 0.1 to 30 wt % additives, at least one propellant, wherein the polyols have a molar mass (MN) of less than 5000 g/mol, and the reaction product has a content of less than 0.1 wt % monomeric asymmetric isocyanate and less than 2 wt % monomeric symmetric isocyanate.

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