Ultraviolet or visible light polymerizable and/or crosslinkable maleimide-functional coating compositions
US6306923A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1997 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Sep 12, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D151/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
These compositions comprise at least one compound (A) and at least one compound (B) containing electron enriched or depleted olefinic double bonds, respectively. The compound(s) (A) are prepolymers consisting in the reaction products of at least one maleic anhydride of formula (I); of at least one compound (II) having at least one --NH.sub.2 function and at least another function F selected among --OH, --NH.sub.2,--NH--, --COOH, --COOR.sup.3 or --OOCR.sup.3 ; of at least one compound (III) capable of forming the chain of the prepolymers by polycondensation and/or polyaddition, compound(s) (II) having first reacted with anhydride(s) (I) opening the maleic anhydride rings with formation of maleamic acid functions (f'), the latter having then been at least partially closed again into maleimides N-substituted by groups functionalized by a function F, the functionalities and proportions of compounds (II) and (III) having been selected in order to exclude any gelation of the reaction medium. ##STR1## PA1 R.sup.1, R.sup.2 =H, C.sub.1 -C.sub.12 alkyl or halogen, R.sup.3 =C.sub.1 -C.sub.5 alkyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.