Patent · US Active

Curing for polyallophanate compositions through undercoat acid neutralization

US10696775B2 · kind B2 · utility

1Cited by

7References

28Claims

0Family size

Assignees

Covestro LLC · US
Covestro Deutschland AG · DE

Inventors

Alan Ekin · Dorpsstraat, US
Florian Stempfle · Cologne, DE

Key dates

Filing date	Mar 23, 2018
Grant date	Jun 30, 2020
Priority date	—
Expiry date	Aug 4, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2190/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention provides a system comprising an allophanate composition comprising a neutralized polyol, a polyuretdione resin, a tertiary amine catalyst, an additive package, and a reducer and a neutralized basecoat comprising an acid scavenger and a pigment. The resulting allophanate system may be used to make coatings, adhesives, castings, composites, and sealants in which clear-coating on neutralized pigmented basecoats is much improved in comparison to non-neutralized basecoats.

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