In a xylylene diisocyanate-containing container including a xylylene diisocyanate and a container accommodating the xylylene diisocyanate, a resin layer is provided on an inner surface of a container.

In a xylylene diisocyanate-containing container including a xylylene diisocyanate and a container accommodating the xylylene diisocyanate, a resin layer is provided on an inner surface of a container.

The invention pertains to a polymer composition possessing improved resistance towards degradation and discolouring phenomena induced by UV radiation, said composition comprising at least one aromatic sulfone polymer; at least one organic UV absorber and at least one basic compound selected from the group consisting of (i) basic oxides and hydroxides of divalent metals and (ii) salts of a weak acid, and to methods for its manufacture and to shaped articles obtained therefrom.

A polyarylene ether sulfone contains endgroups of formula (I),

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A molding composition contains the polyarylene ether sulfone; and a fiber, film, or shaped article can be produced using the molding composition.

A polymerizable composition for an optical material includes (A) one or more isocyanate compounds selected from aliphatic isocyanate compounds and alicyclic isocyanate compounds, (B) an active hydrogen compound having two or more functional groups, and (C) a photochromic compound.

A polymerizable composition for an optical material includes (A) one or more isocyanate compounds selected from aliphatic isocyanate compounds and alicyclic isocyanate compounds, (B) an active hydrogen compound having two or more functional groups, and (C) a photochromic compound.

A polythiol composition according to the present invention includes a polythiol compound (A) having three or more mercapto groups and a nitrogen-containing compound (B) in which one of a mercapto group of the polythiol compound (A) is replaced with a group represented by the following formula (a) and other one of a mercapto group of the polythiol compound (A) is replaced with a hydroxyl group, in which the peak area of the nitrogen-containing compound (B) is equal to or less than 3.0 with respect to the peak area of 100 of the polythiol compound (A) in a high performance liquid chromatography measurement. ##STR00001##

A polythiol composition according to the present invention includes a polythiol compound (A) having three or more mercapto groups and a nitrogen-containing compound (B) in which one of a mercapto group of the polythiol compound (A) is replaced with a group represented by the following formula (a) and other one of a mercapto group of the polythiol compound (A) is replaced with a hydroxyl group, in which the peak area of the nitrogen-containing compound (B) is equal to or less than 3.0 with respect to the peak area of 100 of the polythiol compound (A) in a high performance liquid chromatography measurement. ##STR00001##

The polymerizable composition of the present invention contains (A) an alicyclic isocyanate compound (a1) having two or more functional groups and/or an aliphatic isocyanate compound (a2) having two or more functional groups, (B) a thiol compound having one or more sulfide bonds and/or one or more ester bonds and having two or more functional groups, and (C) an imidazole-based curing catalyst, in which the amount of the imidazole-based curing catalyst (C) is 5 ppm to 3,000 ppm with respect to the total amount of the isocyanate compound (A) and the thiol compound (B).

The polymerizable composition of the present invention contains (A) an alicyclic isocyanate compound (a1) having two or more functional groups and/or an aliphatic isocyanate compound (a2) having two or more functional groups, (B) a thiol compound having one or more sulfide bonds and/or one or more ester bonds and having two or more functional groups, and (C) an imidazole-based curing catalyst, in which the amount of the imidazole-based curing catalyst (C) is 5 ppm to 3,000 ppm with respect to the total amount of the isocyanate compound (A) and the thiol compound (B).