Showa Denko K.k.

Showa Denko Kabushiki Kaisha

Tomoe Uematsu

Tsuyoshi Katoh

Norihide Arai

Tomonari Ogata

Tomoki Okano

Nobuyuki Nagato

Ryoji Ishioka

Kenichiro Maki

A stabilizer for thermally stabilizing an organic borate salt represented by formula (1) is disclosed, comprising a compound having one or two nitrogen-containing 5- or 6-membered heterocyclic ring having a double bond within the ring, a compound having a primary, secondary or tertiary amino group, or a compound having a thiol group. Also disclosed are a photosensitive composition comprising the stabilizer, an organic borate salt and if desired, a sensitizing dye or further a bisimidazole compound; a polymerizable composition comprising the photosensitive composition having added thereto at least one monomer having one or more ethylenically unsaturated bond and if desired, a high molecular polymer or further a pigment; and a colored pattern formed by using the polymerizable composition.

Stabilizer for organic borate salts and photosensitive composition containing the same

A process for producing an allyl carboxylate comprising the step of reacting propylene, oxygen or oxygen-containing gas, and a lower saturated carboxylic acid in the presence of a catalyst at a temperature of 100.degree. C. to 300.degree. C. and a pressure of 0 to 30 atm (gauge) in a vapor phase. The catalyst is prepared by supporting, on a carrier, at least one alkali metal acetate and at least one bivalent palladium salt in the presence of: (A) at least one organic base selected from the group consisting of (i) aliphatic amines having the formula: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 may be the same or different and represent hydrogen, or an alkyl group having 1 to 10 carbon atoms or benzyl group optionally substituted with --CN, --OR, --COOR, or a --N(R).sub.2 group wherein R is H or an alkyl group having 1 to 3 carbon atoms, or any two groups of R.sup.1, R.sup.2, and R.sup.3 may together form a ring provided that R.sup.1, R.sup.2, and R.sup.3 are not simultaneously hydrogen; (ii) aromatic amines having the formula: ##STR2## wherein X represent --R, --CN, --OR, --COOR, --NO.sub.2, or --N(R).sub.2 wherein R is the same as defined above, R.sup.2 and R.sup.3 are the same as defined above; and (iii) nitrogen-containing cyclic compounds having the formula: ##STR3## wherein X is the same as defined above; and/or (B) at least one carboxylic acid having the formula:

Process for production of allyl carboxylate

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Kawasaki, Japan

Tomoe Uematsu