Polyfluoride sulfonium compounds and polymerization initiator thereof
AssigneeSanshin Kagaku Kogyo Co., Ltd.
InventorsKatsushige Kouge, Tatsuya Koizumi, Takeshi Endo
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Abstract
The oxyphenylbenzylalkyl sulfonium polyfluoro(sub)metal salts are novel compounds, which can be produced by way of an anion exchanging process, which compounds have an effect as an initiator capable of polymerizing cationically polymerizable material such as an epoxy monomer or styrene monomers by means of radiation rays such as light or electron rays and/or heat in a short period of time.
Claims12
A polymerizable composition, said composition comprising a cationically polymerizable material and a thermal polymerization initiator comprising a benzyl sulfonium salt represented by the general formula (I):
- ##STR42## where R.sub.1 represents a member selected from the group consisting of hydrogen, a methyl group, an acetyl group and a methoxycarbonyl group;
- R.sub.2 and R.sub.3 each represent a member selected from the group consisting of hydrogen and an alkyl group having 1 to 4 carbon atoms;
- R.sub.4 represents a member selected from the group consisting of hydrogen and a methyl group;
- R.sub.5 represents an alkyl group having 1 to 4 carbon atoms;
- and X.sup.- represents an anion.degree. selected from the group consisting of SbF.sub.6 and PF.sub.6.
A process for polymerizing cationically polymerizable material, said process for polymerizing comprising
- A) adding a thermal polymerization initiator comprising at least one benzyl sulfonium salt represented by the general formula (I) ##STR43## where R.sub.1 represents a member selected from the group consisting of hydrogen, a methyl group, an acetyl group and a methoxycarbonyl group;
- R.sub.2 and R.sub. 3 each represent a member selected from the group consisting of hydrogen and an alkyl group having 1 to 4 carbon atoms;
- R.sub.4 represents a member selected from the group consisting of hydrogen and a methyl group;
- R.sub.5 represents an alkyl group having 1 to 4 carbon atoms;
- and X.sup.- represents an anion selected from the group consisting of SbF.sub.6 and PF.sub.6 to a cationically polymerizable material, and
- B) exposing said cationically polymerizable material and said thermal polymerization initiator to heat to initiate a polymerization reaction.
Dependencies are inferred from the claim text.