Powder coating of amino-urea or urethane catalyst and epoxy and/or siloxane resin
US7470752B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2006 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Jan 3, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31895
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Low-cure powder coating compositions are disclosed, comprising at least one epoxy-containing resin and/or at least one siloxane-containing resin, and at least one material having the structurewherein R1 is an organic radical having 6 to 25 carbon atoms; each R2 is independently a multivalent hydrocarbon group having 1 to 20 carbon atoms; Y iseach R3 and R4 are independently alkyl or aryl groups having 1 to 8 carbon atoms; each Z is independently oxygen or nitrogen; R5 is absent when Z is oxygen and R5 is hydrogen, an alkyl or aryl group having 1 to 20 carbon atoms, or (Y)a—R2— when Z is nitrogen; a and b are integers; a is at least 1; b is 1 to 3; and (b) at least one epoxy-containing resin and/or at least one siloxane-containing resin. The material can optionally be reacted with an acidic hydrogen-containing compound. Some compositions are curable without using crosslinking agents or accelerators. Methods for coating a substrate using these compositions, the coated substrates, and additional catalysts useful for the same purpose are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.