Patent · US Active

Polyfunctional hydrazide crosslinker

US12173178B2 · kind B2 · utility

0Cited by

6References

22Claims

0Family size

Assignee

PPG Industries Ohio, Inc. · US

Inventors

Jonathan G. Weis · Bear, US
Gereme Thomas Hensel · Pittsburgh, US
Chad Landis · Oakmont, US
Pedro Velez-Herrera · Washington, US
Maria Wang · Richardson, US
Shanti Swarup · Allison Park, US
Tsukasa Mizuhara · Gibsonia, US
Xiangling Xu · Pittsburgh, US

Key dates

Filing date	Dec 10, 2021
Grant date	Dec 24, 2024
Priority date	—
Expiry date	Dec 10, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2003/2241
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A crosslinker composition is prepared from a reaction mixture including: (a) a prepolymer including a reaction product of a prepolymer mixture including: (i) a polyfunctional isocyanate; and (ii) a first compound comprising two or more active hydrogen groups, where the polyfunctional isocyanate and/or the first compound comprising two or more active hydrogen groups includes a greater than two functional isocyanate and/or active hydrogen groups, respectively; and (b) a polyfunctional hydrazide. The crosslinker composition is not self-crosslinkable. The crosslinker composition has an acid value of at least 15 based on total resin solids of the crosslinker composition.

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