摘要:
A phenol-free overbased alkaline earth metal carboxylate is obtained by reacting a cyclic ether alcohol, an alkaline earth metal hydroxide, a fatty carboxylic acid, carbon dioxide, an optional fatty alcohol, and an optional liquid hydrocarbon solvent or oil.
摘要:
Liquid overbased alkali or alkaline earth metal carboxylates, particularly barium carboxylates, are prepared by a process which includes the use of a beta diketone as a reaction promoter during carbonation. Mixed metal stabilizers containing the overbased metal carboxylates are used as stabilizers for halogen-containing polymers such as polyvinyl chloride (PVC).
摘要:
A curable composition including a fluorine-containing elastomer having a cyano group in its trunk chain and/or side chain and inorganic nitride particles in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the fluorine-containing elastomer, or a curable composition including a specific crosslinking agent selected from an oxazole crosslinking agent, an imidazole crosslinking agent and a thiazole crosslinking agent, a fluorine-containing elastomer having a cure site crosslinkable with the crosslinking agent and inorganic nitride particles. Also disclosed is a molded article obtained by curing the above-mentioned curable composition, and a process for production of a molded article which includes a step of primary vulcanization of the curable composition and a step of secondary vulcanization following the primary vulcanization.
摘要:
To provide a fluorinated curable resin composition which is excellent in thermal stability and thermal adhesive property. A fluorinated curable resin composition comprising a fluoropolymer (P) having a polymerizable double bond and a thiol compound (S), wherein the fluoropolymer (P) is a copolymer having repeating units derived from a fluoromonoene (a) and a fluorodiene (b) having a residual unsaturated side chain, and the content of the thiol compound (S) is from 0.01 to 1 part by mass per 100 parts by mass of the fluoropolymer (P).
摘要:
A fluororubber composition which (1) is clean, (2) achieves a higher specific gravity, (3) achieves a better physical property in terms of breaking elongation, (4) is free of halogen substance (chlorine), and (5) provides a rubber surface which is non-tacky to metal(s); and a method for producing a crosslinked fluororubber product. The fluororubber composition includes a peroxide-crosslinkable fluororubber comprising a terfluoropolymer; barium sulfate; a peroxide crosslinking agent; and a salt having BF4− as a counter ion; wherein the barium sulfate is included in an amount of 50 to 180 parts by weight based on 100 parts by weight of the fluoropolymer; and wherein the salt having BF4− as a counter ion is included in an amount of 0.7 to 1.5 parts by weight based on 100 parts by weight of the fluoropolymer.
摘要:
The present invention relates to a stabilizer composition for halogen-containing polymers which is free from heavy metals, the use thereof in the stabilizing of halogen-containing polymers, in particular against an undesirable pink coloration, and shaped articles comprising this stabilizer composition.
摘要:
A blend composition comprises a fluorine-containing polymer electrolyte and a fluoro-rubber. An electrolyte membrane may be prepared from the blend composition. The electrolyte membrane may be used in electrochemical cells such as electrolyzers, batteries and fuel cells.
摘要:
A stabilized halogen-containing resin composition containing a halogen-containing resin and a complex of acid white clay and/or activated white clay with a calcium hydroxide compound represented by the formula (1), Ca1-x-yM2+xAly(OH)2 (1) wherein M2+ represents at least one bivalent metal selected from the group consisting of Mg, Zn, Cu and etc., x is in the range of 0≦x
摘要:
The present invention provides a curable composition comprising a fluorine-containing elastomer having a cyano group in its trunk chain and/or side chain and inorganic nitride particles, or a curable composition comprising a specific crosslinking agent, a fluorine-containing elastomer having a cure site crosslinkable with the crosslinking agent and inorganic nitride particles. The present invention also provides a molded article obtained by curing the above-mentioned curable composition. The present invention further provides a process for production of a molded article comprising a step of primary vulcanization of the curable composition and a step of secondary vulcanization following the primary vulcanization. The curable composition is characterized by comprising a fluorine-containing elastomer having a cyano group in its trunk chain and/or side chain and inorganic nitride particles and containing the inorganic nitride particles in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the fluorine-containing elastomer. Also the curable composition is one comprising at least one kind of a crosslinking agent selected from the group consisting of an oxazole crosslinking agent, an imidazole crosslinking agent and a thiazole crosslinking agent, a fluorine-containing elastomer having a cure site crosslinkable with the crosslinking agent and inorganic nitride particles.
摘要:
Creep resistant fluoropolymer is made by blending a melt-fabricable fluoropolymer having a melt flow rate of no greater than about 7 g/10 min with milled carbon fiber and forming the resultant blend into an article, the carbon fiber content of the blend being from about 15 to 35 wt % based on the combined weight of the carbon fiber and the fluoropolymer.