摘要:
A resin composition comprises an EVOH (A) and a thermoplastic polymer (B) having at least one functional group selected from the group consisting of boronic acid group, borinic acid group and boron-containing groups convertible into boronic acid group or borinic acid group in the presence of water. The composition may further comprise a thermoplastic polymer (C) other than (A) or (B). The resin compositions thus obtained have good compatibility and give molded products having superior transparency and good mechanical properties.
摘要:
A multilayered container comprising an intermediate layer of a resin composition (A) which comprises 50-95% by weight of a specific EVOH, and 50-5% by weight of an inorganic filler, and inner and outer layers of a moisture resistant thermoplastic resin (B), at least the body wall part of the container comprising multiplicity of regions in which substantially 2-dimensional thin layers of the inorganic filler extend parallel with the wall surface and laminated with each other, said layer of said resin composition (A) having a specific moisture permeability. The multilayered container can readily be prepared by thermoforming from the corresponding multilayered structure. Food packages obtained by filling the multilayered container of the present invention with food, sealing it and then sterilizing the package under a condition where heat and moisture act at the same time as in retorting are resistant against impermeation of oxygen that would deteriorate the food contained therein, thus exhibiting excellent storage capability, and have good container appearance.
摘要:
Provided is a polyvinyl alcohol having a triad isotacticity of at least 72% and an intrinsic viscosity of at least 0.1 dl/g (deciliter/gram) as determined by measurement of solution viscosity in acetone at 30 C of the polyvinyl acetate obtained by acetylation thereof. The polyvinyl alcohol of the present invention has a crystalline structure different from those of conventional isotactic polyvinyl alcohols and, as a result, exhibit excellent characteristics including high crystallinity and high melting point, as well as markedly high water resistance and thermal resistance.
摘要:
Provided are multilayered structures comprising at least 2 layers of a layer which comprises a resin composition comprising:
(A) a thermoplastic resin, (B) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 65 mol% and a saponification degree of vinyl acetate component of at least 96%, and (C) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 68 to 98 mol% and a saponification degree of vinyl acetate component of at least 20%, and a layer which comprises a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 65 mol% and a saponification degree of vinyl acetate component of at least 96%. These multilayered structures have excellent gas barrier properties and resistance to intralayer delamination, and the resin composition layer thereof has neat appearance.
摘要:
Disclosed herein is a highly compatible polymer composition which comprises (A) starch, (B) vinyl alcohol polymer having an alkyl group of 4 to 50 carbon atoms at the terminal, and/or (C) polyvinyl alcohol. Disclosed also herein is a textile sizing agent having outstanding weavability which comprises (A) starch, (B) vinyl alcohol polymer having an alkyl group of 4 to 50 carbo atoms at the terminal, (C) polyvinyl alcohol, and (D) oil for textile sizing.
摘要:
This invention provides a water-soluble binder and a hot-melt binder for molding ceramics said binder being composed of a polyvinyl alcohol-based copolymer containing (meth)allyl group-containing nonionic monomer units or nitrogeneous group-containing nonionic monomer units.
摘要:
A photosensitive composition which comprises: (a) a vinyl alcohol polymer having at least one thiol group in its molecule, (b) an ethylenically unsaturated compound which is radically polymerizable, and, (c) a photoinitiator, and which does not show the defect of the removal of the vinyl alcohol polymer from the hardened regions upon development with water.
摘要:
A polymer having a fluorine-containing end group which is produced by polymerizing a monomer capable of radical polymerization in the presence of a fluorine-containing thiol; a vinyl ester polymer having a fluorine-containing end group which is produced by polymerizing vinyl ester in the presence of a fluorine-containing thiol; and vinyl alcohol polymer having a fluorine-containing end group which is produced by saponifying the said vinyl ester polymer; and processes for producing the same are provided. The polymers of this invention are superior in water repellency, oil repellency, heat resistance, chemical resistance, and surface activity which are characteristic of fluorocarbon compounds, and are expected to find use in various application areas.