摘要:
An optical member comprising a polymer which is amorphous and has a glass transition temperature of not lower than 110° C. and optical property parameters O′R(∞)) and O′G(∞) that satisfy the following inequality (1), |O′G(∞)|
摘要:
The present invention provides a covering material having a layer formed of a resin of which glass transition point is in the range of 10° C. to 50° C., said covering material having excellent shape keeping ability and shape recovering ability after deformation.
摘要:
A thermoplastic elastomer composition characterized in that the composition comprises a resin component and at least two kinds of rubber components, wherein at least one kind of the rubber components makes a continuous phase and/or a network-like phase, and the remaining at least one kind of the rubber components makes an isolated phase; and a process for producing the same.
摘要:
A thermoplastic elastomer composition characterized in that the composition comprises a resin component and at least two kinds of rubber components, wherein at least one kind of the rubber components makes a continuous phase and/or a network-like phase, and the remaining at least one kind of the rubber components makes an isolated phase; and a process for producing the same.
摘要:
A copolymer of a strait chain a -olefin and a vinyl compound (I) represented by the general formula CH2═CH—R, wherein R is a hydrocarbon group, the steric parameter Es of the substituent R is −1.64 or less and the steric parameter B1 of the substituent R is 1.53 or more, an adhesive containing the same as an effective ingredient, and an laminate containing the adhesive.
摘要:
A modified aluminum oxy compound(A) obtained by reacting an aluminum oxy compound(a), water (b) and a compound having a hydroxyl group(c); a polymerization catalyst component comprising the modified aluminum oxy compound; a polymerization catalyst obtained by contacting said modified aluminum oxy compound(A), a transition metal compound(B) and optionally an organoaluminum compound(C) and a specified boron compound; and a process for producing an olefin polymer or an alkenyl aromatic hydrocarbon polymer with the polymerization catalyst.
摘要:
A process for producing 5-vinyl-2-norbornene which comprises the steps of subjecting a liquid raw material in which tetrahydroindene/dicyclopentadiene ratio (by weight) falls within the range of from 5/100 to 80/100 to a thermal decomposition in liquid phase in the presence of an aromatic hydrocarbon solvent having a boiling point of from 250.degree. C. to 300.degree. C. at a reaction temperature of not lower than 200.degree. C. and lower than 240.degree. C. for a reaction time of from 10 minutes to 120 minutes to obtain a liquid reaction mixture (A-1) composed of 50% to 70% by weight of cyclopentadiene, distilling the liquid reaction mixture (A-1) to obtain fraction (B-1) composed of 90% to 100% by weight of cyclopentadiene and fraction (B-2) composed of 60% to 90% by weight of the total of dicyclopentadiene and tetrahydroindene, further distilling the fraction (B-2) to obtain fraction (B-3) composed of 15% to 40% by weight of dicyclopentadiene and fraction (B-4) composed of 60% to 100% by weight of tetrahydroindene, recycling the fraction (B-3) into the liquid raw material, removing the fraction (B-4) out of the system, and subjecting the fraction (B-1) to a Diels Alder reaction with butadiene to obtain a liquid reaction mixture (C-1) composed of 20% to 40% by weight of 5-vinyl-2-norbornene.
摘要:
A copolymer of a strait chain α-olefin and a vinyl compound (I) represented by the general formula CH2═CH—R, wherein R is a hydrocarbon group, the steric parameter Es of the substituent R is −1.64 or less and the steric parameter B1 of the substituent R is 1.53 or more, an adhesive containing the same as an effective ingredient, and an laminate containing the adhesive.
摘要:
A process for producing an olefin-based copolymer, which comprises copolymerizing at least one olefin selected from the group consisting of ethylene and straight chain α-olefins, and a vinyl compound (I) and a polyene (II) described below:Vinyl compound (I); a vinyl compound represented by the general formula CH2═CH—R, wherein the substituent R is a saturated hydrocarbon group and steric parameters Es and B1 of the substituent R are respectively −1.64 or less and 1.53 or more; andPolyene (II); a compound having two or more of ethylene bonds and at least one combination of two ethylene bonds in which those are bonded to each other through at least three carbon atoms.
摘要:
A copolymer of ethylene and a vinyl compound (I) represented by the general formula CH2═CH—R, wherein R is a saturated hydrocarbon group, a steric parameter Es of the substituent R is from −2.77 to −1.64 and a steric parameter B1 of the substituent R is from 1.53 to 2.90, a molded article comprising the same, an adhesive comprising the same as an effective ingredient an laminate comprising the same.