Photopolymerization by means of sulphoxonium salts
US4339567A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1981 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Feb 23, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31529
- 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 or prepolymers, or phenoplasts, are so converted by exposure to actinic radiation in the presence of a sulphoxonium salt (II) of formula ##STR1## where P denotes zero or 1, PA1 R.sup.6 denotes an arylene or aralkylene group, PA1 R.sup.7 denotes --H or a group of formula ##STR2## R.sup.8 denotes an alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl group, PA1 R.sup.9 has the same meaning as R.sup.8 but may alternatively represent a dialkylamino group or, if R.sup.8 represents an alkyl group, R.sup.9 may represent an arylamino group, PA1 R.sup.10 and R.sup.11 each independently have the same meaning as R.sup.8 but may also each denote --H, PA1 r represents 1, 2, or 3, PA1 Z.sup.r- denotes an r-valent anion of a protic acid, and q denotes zero when p denotes zero, or zero or 1 when p denotes 1. Typical II are dimethylphenylsulphoxonium hexafluorophosphate and perchlorate, dimethylphenacylsulphoxonium hexafluorophosphate, and chloride, dodecylmethylbenzylsulphoxonium hexafluorophosphate, and 1,4-bis(1-o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.