The present invention relates to an oxygen-scavenging composition comprising: at least 1.0% by weight of polybutadiene based on the total weight of the composition, wherein said polybutadiene has a number average molecular weight Mn of from 1000 to 10000 g/mol as determined by gel permeation chromatography (GPC) as described in the specification under the Determination methods; and a polypropylene component.

The present invention also relates to the use of an oxygen-scavenging composition according to the invention for the manufacture of an article.

The present invention relates to an oxygen-scavenging composition comprising: at least 1.0% by weight of polybutadiene based on the total weight of the composition, wherein said polybutadiene has a number average molecular weight Mn of from 1000 to 10000 g/mol as determined by gel permeation chromatography (GPC) as described in the specification under the Determination methods; and a polypropylene component.

The present invention also relates to the use of an oxygen-scavenging composition according to the invention for the manufacture of an article.

In an aspect, a curable composition comprises an acid catalyzed urethane (meth)acrylate oligomer comprising an acid catalyst; a cyanoacrylate monomer; a metallocene compound; a free radical polymerization inhibitor; and an acidic anionic polymerization inhibitor. In yet another aspect, a method of making a cured composition comprises forming the curable composition; and curing the curable composition by exposing it to light to form the cured composition.

In an aspect, a curable composition comprises an acid catalyzed urethane (meth)acrylate oligomer comprising an acid catalyst; a cyanoacrylate monomer; a metallocene compound; a free radical polymerization inhibitor; and an acidic anionic polymerization inhibitor. In yet another aspect, a method of making a cured composition comprises forming the curable composition; and curing the curable composition by exposing it to light to form the cured composition.

The sulfonium salt has high photosensitivity to i-rays and high compatibility with cationically polymerizable compounds such as epoxy compounds, and is excellent storage stability in formulations containing such compounds. The sulfonium salt is represented by general formula (1). In formula (1), R represents an alkyl group or an aryl group; substituents, R1 to R5, each independently represent an alkyl group, a hydroxy group, an alkoxy group, an aryl group, an aryloxy group, a hydroxy(poly)alkyleneoxy group, or a halogen atom; R6 to R9 each independently represent an alkyl group, an aryl group, or a hydrogen atom; m.sup.1 to m.sup.5 each represent the number of occurrences of each of R1 to R5, m.sup.1 and m.sup.4 represent an integer of 0 to 3, m.sup.2 and m.sup.5 represent an integer of 0 to 4, m.sup.3 represents an integer of 0 to 5, and X.sup.− represents a monovalent polyatomic anion.

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A liquid crystal panel according to one embodiment includes a first substrate, a second substrate opposed to the first substrate, a sealing member bonding the first substrate and the second substrate, and a liquid crystal layer sealed between the first substrate and the second substrate by the sealing member. The sealing member includes a ten-hour half-life temperature of 95° C. or lower and an acrylic resin. The liquid crystal layer includes a macromolecular compound.

Provided is a polymerization initiator, which has an excellent curing rate and is an alternative to a polymerization initiator system using a benzoyl peroxide-aromatic amine compound, a curable composition containing the polymerization initiator, a dental material and dental filler material containing the composition, and a kit for preparing the curable composition. The polymerization initiator contains one or more compounds (A) selected from the group consisting of a pyrazolidinedione compound and/or pyrazolidine(di)thione compound (A1), a salt (A2) of the compound (A1), and a malonate compound (A3).

The present invention refers, in its generality, to a tubular reactor for homo or copolymerization of olefins, with one of more initiator injection devices. The invention also refers to an initiator device in a process fluid stream in a reactor polymerization reactor, and to a process for the production of polymers and copolymers of ethylene, particularly low density polymers (LDPE), that use the said device.

A method of producing a heat-resistant crosslinked fluororubber formed body, including a step (1) of melt-mixing, with respect to 100 mass parts of base rubber containing 40 to 98 mass % of fluororubber and 2 to 40 mass % of ethylene/tetrafluoroethylene copolymer resin, 0.003 to 0.5 mass parts of organic peroxide, 0.5 to 400 mass parts of inorganic filler, 2 to 15 mass parts of a specific silane coupling agent, and silanol condensation catalyst, and including a step (a) of melt-mixing a part of the base rubber, the organic peroxide, the inorganic filler and the silane coupling agent at a temperature equal to or higher than a decomposition temperature of said organic peroxide, and a step (b) of melt-mixing a remainder of the base rubber, and the silanol condensation catalyst, and the fluororubber and the ethylene/tetrafluoroethylene copolymer resin are melt-mixed in any of the steps (a) and (b).

A method of producing a heat-resistant crosslinked fluororubber formed body, including a step (1) of melt-mixing, with respect to 100 mass parts of base rubber containing 40 to 98 mass % of fluororubber and 2 to 40 mass % of ethylene/tetrafluoroethylene copolymer resin, 0.003 to 0.5 mass parts of organic peroxide, 0.5 to 400 mass parts of inorganic filler, 2 to 15 mass parts of a specific silane coupling agent, and silanol condensation catalyst, and including a step (a) of melt-mixing a part of the base rubber, the organic peroxide, the inorganic filler and the silane coupling agent at a temperature equal to or higher than a decomposition temperature of said organic peroxide, and a step (b) of melt-mixing a remainder of the base rubber, and the silanol condensation catalyst, and the fluororubber and the ethylene/tetrafluoroethylene copolymer resin are melt-mixed in any of the steps (a) and (b).