Photopolymerization by means of sulfoxonium salts
US4383025A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Jun 29, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/124
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Substances (I) capable of being converted into higher-molecular weight materials under the influence of a cationic catalyst, such as 1,2-epoxides, aminoplasts, vinyl monomers and prepolymers, or phenoplasts, are so converted by exposure to actinic radiation in the presence of an aryl- or aroyl- carbamoylsulfoxonium salt (II) of formula ##STR1## where p is zero or 1, PA1 q is 1 to 4, PA1 Ar denotes an aromatic group, PA1 R.sup.6 denotes --H or group --COR.sup.9 or --CONH(CO).sub.r R.sup.10, PA1 R.sup.7 denotes an alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl group, PA1 R.sup.8 has the same meaning as R.sup.7 but may alternatively represent a dialkylamino group or, if R.sup.7 denotes alkyl, it may alternatively represent an arylamino group, PA1 R.sup.9 and R.sup.10 each denote a saturated or ethylenically unsaturated radical, PA1 r is zero or 1, PA1 t is 1, 2, or 3, and PA1 Z.sup.t- denotes a t-valent anion of a protic acid. Typical salts (II) are acetanilinodimethylsufoxonium hexafluorophosphate, benzoylcarbamoyldimethylsulfoxonium hexafluorophosphate, 3,4-dichloracetanilinodimethylsulfoxonium hexafluoroarsenate, 2,4-bis(dimethylsulfoxoniummethylcarbamoyl)-toluene di…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.