摘要:
A viscosity index improver for addition to lubricating oil or the like, which comprises a graft copolymer having structural units of an oil-soluble polymer (a) comprising an olefin polymer and structural units of a copolymer (b) of a monomer having a peroxide bond with a (meth)acrylate or the like or a copolymer (c) of a monomer having a peroxide bond with 2-hydroxyethyl(meth)acrylate or the like. The improver is excellent in the effect of improving the viscosity index, the thickening effect, the fluidity at low temperatures and the shear stability, and has no fear of causing phase separation in lubricating oil.
摘要:
The invention provides a frost-preventive composition which strongly defrosts and melts ice and which prevents frosting for a long period of time and which does not run or sag when applied to a wall surface or the like.The frost-preventive greasy composition of the invention contains (a) at least one species selected from among glycols, glycol ethers, polyalkylene glycols, polyalkylene glycol derivatives, glycerin, and glycerin derivatives, (b) at least one species selected from among soaps, urea compounds, silica gel microparticles, lecithin, and polysaccharides, (c) at least one metal salt selected from among carboxylic acid metal salts, nitric acid metal salts, phosphoric acid metal salts, metal chlorides, and metal bromides, and (d) at least one species selected from among sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, castor oil, hydrogenated castor oil, polyoxyalkylene castor oils, and polyoxyalkylene hydrogenated castor oils, in specified proportions, respectively.
摘要:
The invention provides a frost-preventive composition which strongly defrosts and melts ice and which prevents frosting for a long period of time and which does not run or sag when applied to a wall surface or the like.The frost-preventive greasy composition of the invention contains (a) at least one species selected from among glycols, glycol ethers, polyalkylene glycols, polyalkylene glycol derivatives, glycerin, and glycerin derivatives, (b) at least one species selected from among soaps, urea compounds, silica gel microparticles, lecithin, and polysaccharides, (c) at least one metal salt selected from among carboxylic acid metal salts, nitric acid metal salts, phosphoric acid metal salts, metal chlorides, and metal bromides, and (d) at least one species selected from among sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, castor oil, hydrogenated castor oil, polyoxyalkylene castor oils, and polyoxyalkylene hydrogenated castor oils, in specified proportions, respectively.