摘要:
A rubber composition having improved properties containing a starting rubber (e.g., diene rubber) and a polysiloxane having the following alkoxysilyl group (I) and/or acyloxysilyl group (II) and having an average degree of polymerization of 3 to 10,000:
≡ Si - OR 1
≡ Si - OCOR 2 wherein, R 1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 18 carbon atoms or an organic group containing an ether bond and R 2 is hydrogen or a hydrocarbon group having 1 to 21 carbon atoms.
摘要:
A one-pack cold moisture curable resin composition which possesses excellent storage stability, high curing rate after being taken out of a container, and flexibility and which comprises a ketimine prepared by reacting a ketone having a substituent at the α-position with a polyamine having in its molecule at least two amino groups and a methylene group at the α-position, and a main polymer comprising an epoxy resin and/or a modified silicone having in its molecule a hydrolyzable alkoxysilyl group; another one-pack cold moisture curable resin composition which is excellent in storage stability, curability, and also in adhesion to a wet face or initial thixotropy; a silicon-containing compound having a ketimine group, capable of preventing a reaction with an epoxy resin or the like during storage by virtue of the presence of a bulky alkyl group near the ketimine group, and a process for preparing the same; a still another one-pack cold moisture curable resin composition which comprises the silicon-containing compound as a latent curing agent and, by virtue of the presence of the silicon-containing compound, has good storage stability and short curing time after being taken out of a container; and a novel process for synthesizing a ketimine.
摘要:
A rubber composition for a tire comprising: 100 parts by weight of a starting rubber; 10 to 150 parts by weight of a carbon black; 0.1 to 20 parts by weight of a sulfur; and 40 parts by weight or less of a polysiloxane having the following alkoxysilyl group (I) or acyloxysilyl group (II) and having an average degree of polymerization of 3 to 10,000: IDENTICAL Si - OR IDENTICAL Si - OCOR wherein R is a substituted or unsubstituted monovalent hydrocarbon group or an organic group containing an ether bond and having 1 to 18 carbon atoms and R is hydrogen or a hydrocarbon group having 1 to 21 carbon atoms.
摘要:
Rubber compositions for footwear, conveyor belt covers, rolls, hoses, cables, rubberized fabrics, and grips containing (A) an elastomer, (B) 5 to 150 parts by weight of a filler, and (C) a polysiloxane represented by the formula (I): wherein R , R , R , m, and n are as defined in the specification, having an average degree of polymerization of 3 to 1000 in a specific ratio with respect to the filler (B) and footwear, conveyor belt covers, rolls, hoses, cables, rubberized fabrics, and grips comprising these rubber compositions.
摘要:
Polysiloxanes having siloxane structures of general formulae (1) and (2) or (1) and (3), wherein R1 is C1-C6 alkyl or C1-C21 acyl; R2 is C2-C4 alkylene; R3 is a monovalent hydrocarbon group; a is 1 to 200; b is 1 to 200; c is 1 to 200; t is 2 or 3; and s is 1 to 100. A siloxane-base reactive plasticizer having in the molecule both at least one plasticizing moiety selected from among organic groups having an ester linkage and aliphatic and aromatic hydrocarbon groups and at least one reactive group selected from among alkoxysilyl groups and acyloxysilyl groups, the plasticizing moiety accounting for at least 50 wt.% of the plasticizer.
摘要:
A primer composition comprising (A) 100 parts by weight of a reactive acrylic resin having a backbone copolymer chain prepared from two alkyl methacrylates different in the number of carbon atoms and a side chain containing a prescribed amount of hydroxyl and at least one aromatic ring, (B) 100 to 500 parts by weight of a silane compound prepared by reacting an aminosilane having two amino groups with a dialkoxyepoxysilane and a trialkoxyepoxysilane at a prescribed ratio, (C) 10 to 300 parts by weight of a bisphenol A type epoxy resin having an epoxy equivalent of 1000 to 2000g/eq, and (D) 100 to 500 parts by weight of carbon black. This composition is excellent in storage stability, can retain excellent adhesion for a period from the application thereof to that of a sealant, and exhibits excellent weather resistance.
摘要:
A thermoplastic elastomer composition which can attain an improvement in the flexibility (at both ordinary and low temperatures), oil resistance and low-temperature resistance of a hose by making the inner and/or outer tube from the hose from the composition and which permits the production of a hose without vulvanization, thus lowering the production cost; a hose having the above characteristics wherein the inner and/or outer tube is made from the composition; and a process and equipment for the production of the hose.
摘要:
A rubber composition comprising at least one rubber including a diene rubber and a rubber-reinforcing carbon black with silica deposited on the surface thereof.
摘要:
The object of the present invention is to provide a curable resin composition having excellent adhesion. This curable resin composition contains: a straight-chain organopolysiloxane (A) having at least two silicon-bonded hydrogen atoms and at least one aryl group in each molecule, the degree of polymerization being greater than 10; a branched-chain organopolysiloxane (B) having at least three alkenyl groups and at least one aryl group in each molecule; and a hydrosilylation reaction catalyst (C).
摘要:
A process for producing surface-treated carbon black for rubber reinforcement characterized by providing carbon black and organosiloxane together; and then heating the mixture to a temperature of 60 DEG C to 200 DEG C to deposit a silicon dioxide residue on the surface of the carbon black and a rubber composition using the same.