Abstract:
The chain polyene-group containing norbornene compound of the invention is represented by the formula ÄIÜ: wherein n is an integer of 1 to 5, R is an alkyl group of 1 to 5 carbon atoms, and R and R are each independently a hydrogen atom or an alkyl group of 1 to 5 carbon atoms. The unsaturated ethylene copolymer of the invention is a random copolymer of 30 to 92 % by mol of (i) ethylene units, 6 to 70 % by mol of (ii) specific alpha -olefin units and 0.1 to 30 % by mol of (iii) units derived from the norbornene compound ÄIÜ, where the molar ratio of (i)/(ii) is in the range of 40/60 to 92/8 and the unit (iii) is represented by the specific formula, and has an intrinsic viscosity Ä eta Ü of 0.05 to 10 dl/g. The novel unsaturated ethylene copolymer is excellent in weathering resistance, heat resistance and ozone resistance and has a high vulcanizing rate.
Abstract:
A novel unsaturated copolymer of ethylene comprises a random copolymer of (i) ethylene, (ii) an alpha -olefin of 3 to 20 carbon atoms and (iii) at least one straight chain or branched chain nonconjugated triene or tetraene having one vinyl group in the molecule, which contains 30 - 92 % by mol of ethylene units (i), 6 - 70 % by mol of alpha -olefin units (ii) and 0.1 - 30 % by mol of triene or tetraene units (iii), and which has a molar ratio of ethylene units (i) to alpha -olefin units (ii) of 40/60 to 92/8 (ethylene units (i)/ alpha -olefin units (ii)) and an intrinsic viscosity Ä eta Ü, measured in decalin at 135 DEG C, of 0.05 to 10 dl/g. This novel unsaturated copolymer of ethylene is excellent in weathering resistance, heat resistance and ozone resistance and has a high vulcanizing rate.
Abstract:
A process for producing a substituted amine of formula (IV) : R NHOR (IV) wherein R is hydrogen, a hydrocarbon group or a heteroatom-containing hydrocarbon group, and R is a hydrocarbon group or a heteroatom-containing hydrocarbon group, which process comprises: (a) reacting a hydroxamic acid of formula (II): R CONHOH (II) wherein R is hydrogen or a hydrocarbon group, in the presence of a base with a reagent capable of introducing a hydrocarbon group or a heteroatom-containing hydrocarbon group onto an oxygen atom and/or a nitrogen atom to form a substituted hydroxamic acid of formula (III): wherein R , R and R are as defined above, and (b) hydrolyzing the substituted hydroxamic acid of formula (III) in the presence of a base or an acid to produce a substituted amine of formula (IV): R NHOR (IV) wherein R and R are as defined above.
Abstract:
A novel unsaturated copolymer of ethylene comprises a random copolymer of (i) ethylene, (ii) an alpha -olefin of 3 to 20 carbon atoms and (iii) at least one straight chain or branched chain nonconjugated triene or tetraene having one vinyl group in the molecule, which contains 30 - 92 % by mol of ethylene units (i), 6 - 70 % by mol of alpha -olefin units (ii) and 0.1 - 30 % by mol of triene or tetraene units (iii), and which has a molar ratio of ethylene units (i) to alpha -olefin units (ii) of 40/60 to 92/8 (ethylene units (i)/ alpha -olefin units (ii)) and an intrinsic viscosity Ä eta Ü, measured in decalin at 135 DEG C, of 0.05 to 10 dl/g. This novel unsaturated copolymer of ethylene is excellent in weathering resistance, heat resistance and ozone resistance and has a high vulcanizing rate.
Abstract:
A process for producing a substituted amine of formula (IV) : R NHOR (IV) wherein R is hydrogen, a hydrocarbon group or a heteroatom-containing hydrocarbon group, and R is a hydrocarbon group or a heteroatom-containing hydrocarbon group, which process comprises: (a) reacting a hydroxamic acid of formula (II): R CONHOH (II) wherein R is hydrogen or a hydrocarbon group, in the presence of a base with a reagent capable of introducing a hydrocarbon group or a heteroatom-containing hydrocarbon group onto an oxygen atom and/or a nitrogen atom to form a substituted hydroxamic acid of formula (III): wherein R , R and R are as defined above, and (b) hydrolyzing the substituted hydroxamic acid of formula (III) in the presence of a base or an acid to produce a substituted amine of formula (IV): R NHOR (IV) wherein R and R are as defined above.
Abstract:
The chain polyene-group containing norbornene compound of the invention is represented by the formula ÄIÜ: wherein n is an integer of 1 to 5, R is an alkyl group of 1 to 5 carbon atoms, and R and R are each independently a hydrogen atom or an alkyl group of 1 to 5 carbon atoms. The unsaturated ethylene copolymer of the invention is a random copolymer of 30 to 92 % by mol of (i) ethylene units, 6 to 70 % by mol of (ii) specific alpha -olefin units and 0.1 to 30 % by mol of (iii) units derived from the norbornene compound ÄIÜ, where the molar ratio of (i)/(ii) is in the range of 40/60 to 92/8 and the unit (iii) is represented by the specific formula, and has an intrinsic viscosity Ä eta Ü of 0.05 to 10 dl/g. The novel unsaturated ethylene copolymer is excellent in weathering resistance, heat resistance and ozone resistance and has a high vulcanizing rate.
Abstract:
PROBLEM TO BE SOLVED: To provide a branched chain-like polyene compound which gives an unsaturated ethylenic copolymer rubber having excellent weather resistance, heat resistance and ozone resistance and having a large vulcanization rate, when copolymerized with an α-olefin such as ethylene or propylene to produce an unsaturated ethylenic copolymer, and to provide a method for producing the same. SOLUTION: This branched chain-like polyene compound represented by general formula (I) [(f) is an integer of 1 to 5; R 1 , R 2 and R 3 are each independently H or a 1 to 5C alkyl, provided that R 1 , R 2 and R 3 are simultaneously not H]. COPYRIGHT: (C)2006,JPO&NCIPI