Coating articles using radiation-curable powder coatings
US5558911A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1995 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Apr 17, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2401/32
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a method of coating articles with powder coatings which contain polymers and are applied to the surface of the substrate to be coated, are melted and are crosslinked by UV radiation, the polymers employed being copolymers of PA1 (a) at least one monomer of the general formula (I) EQU CH.sub.2 .dbd.C(R.sup.1)--CO--OR.sup.2 (I) PA1 where PA2 R.sup.1 =H or CH.sub.3 and PA2 R.sup.2 =H, C.sub.n H.sub.2n+1 where n=from 1 to 30, or is an alicyclic, araliphatic or heterocyclic radical, hydroxyalkyl, alkoxyalkyl, glycidyl or aminoalkyl, PA1 or of the general formula II EQU CH.sub.2 .dbd.C(R.sup.1)--CO--NR.sup.3 R.sup.4 (II) PA1 where R.sup.3 =H or CH.sub.3 and PA1 where R.sup.3 and R.sup.4 may be identical to or different from one another and are H, CH.sub.2 OH, C.sub.n H.sub.2n+1 where n=1 to 30 PA1 (b) at least one copolymerizable, ethylenically unsaturated, organic compound which is different from (a) and PA1 (c) at least one copolymerizable, ethylenically unsaturated, aromatic or partially aromatic ketone which is capable of abstracting hydrogen in the excited triplet state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.