摘要:
An object of the present invention is to solve problems of poor safety and short life of the battery caused due to poor adhesion of the coating agent composition for battery electrode or separator to an electrode or separator. A coating agent composition for battery electrode or separator, comprising a vinyl alcohol copolymer having a structural unit represented by the general formula (1), and an aqueous emulsion of a synthetic resin obtained by polymerizing a copolymerizable monomer having an acrylic monomer as a main component, or an aqueous emulsion of a styrene thermoplastic elastomer.
摘要:
A water-soluble polyvinyl alcohol resin fiber obtained by melt-spinning a material containing as the main component a water-soluble polyvinyl alcohol resin having 1,2-diol structural units represented by the general formula (1); and nonwoven fabrics made by using the fiber. The resin is excellent in the solubility in water at low temperature and is depressed in the bubbling as observed in being dissolved in water. Additionally, the invention permits the use of completely saponified PVA in melt forming, which brings about a depression in the production of acetic acid smell and an improve in the working atmosphere: [Chemical formula 1] (1) wherein R1, R2, R3, R4, R5 and R6 are each hydrogen or a monovalent organic group and may be the same or different from each other; and X is a single bond or a connecting chain.
摘要:
A dispersion stabilizer for vinyl compound suspension polymerization with which due to excellence in dispersion stability at polymerization, there can be obtained vinyl chloride polymer particles with sharp particle size distribution and high bulk density, and with which there can be produced vinyl chloride polymer particles being less in wet foam ratio, being resistant to formation of foamy polymer or polymer scale attributed to dry foam, further being less in staining and excelling in heat resistance. There is provided a dispersion stabilizer comprised of a PVA resin of 65 to 87 mol% saponification degree having a 1,2-diol component in its side chain.
摘要:
This is to provide an aqueous metal surface treatment agent for a lithium ion secondary battery which can improve interlaminar adhesiveness between a metal member and a resin coating layer such as a film or a coated film, and solvent resistance without using trivalent chromium. The aqueous metal surface treatment agent for a lithium ion secondary battery comprises a polyvinyl alcohol resin containing 2 to 15 mol% of a 1,2-diol structural unit represented by the formula (1): having a degree of saponification of 90 to 99.9 mol% and an average degree of polymerization of 250 to 3000; and a metallic crosslinking agent.
摘要:
A novel ethylene/vinyl alcohol copolymer which has improved stretchability and can give a molded object excellent in gas-barrier properties, appearance, and strength. The ethylene/vinyl alcohol copolymer is characterized by comprising structural units represented by the following formula (1). (X represents any desired bond chain excluding an ether bond; R1 to R4 each independently represents any desired substituent; and n is 0 or 1.)
摘要:
This invention provides an aqueous emulsion, which comprises a polyvinyl alcohol-based resin, as the dispersant, and a polymer comprising a structural unit derived from an ethylenically unsaturated monomer, as the dispersoid, from which a film having excellent transparency can be obtained, and which is excellent in mechanical stability, chemical stability, freezing stability and storage stability, and a method for producing the same, and relates to an aqueous emulsion which has an average particle size of the dispersoid of from 100 to 450 µm and an apparent grafting efficiency of the polyvinyl alcohol-based resin of from 65 to 75% based on the dispersoid, and a method for producing the same.
摘要:
An object of the present invention is to provide a new acetoacetic ester group-containing polyvinyl alcohol-based resin that contains less amount of water-insoluble matter and is excellent in transparency and viscosity stability when converted into an aqueous solution, and that realizes excellent water resistance by combined use of a crosslinking agent. The invention provides an acetoacetic ester group-containing polyvinyl alcohol-based resin containing a structural unit represented by the general formula (1):
wherein at least one of R 1 and R 2 represents an acetoacetyl group, R 3 , R 4 , R 5 , R 6 , R 7 and R 8 each independently represents an arbitrary substituent, and X represents a single bond or an arbitrary bonding chain.