Nippon Synthetic Chemical Industry Co.

Osaka, Japan

Nippon Synthetic Chemical Industry Co.

Osaka, Japan

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Patent
Nippon Synthetic Chemical Industry Co. | Date: 2017-05-03

An active-energy-ray-curable pressure-sensitive adhesive composition comprising a urethane (meth)acrylate-based compound (A) obtained by reacting a polybutadiene-based polyol (a1), a polyvalent isocyanate-based compound (a2), and a hydroxyl group-containing (meth)acrylate-based compound (a3) and an ethylenically unsaturated monomer (B), wherein storage modulus at 23C of a pressure-sensitive adhesive layer obtained by curing the composition by irradiation with an active energy ray is 1.010^(6) or more and glass transition temperature of the pressure-sensitive adhesive layer is -30C or lower.


The purpose of the invention is to provide: a package for EVOH resin pellets which is capable of providing the EVOH resin pellets almost free from powder even in a case where the package contains the powder generated therein during transportation or the like after shipment; and EVOH resin pellets contaminated with very small amount of the powder in a case where a user uses the EVOH resin pellets as a molding material. A package, where pellets each having a substantially circular or oval cross-section are packed in a packaging container whose inner surface has a surface resistivity of 1.010^(14) or more, is capable of providing pellets to which 0.8 wt% or less of powder adhered relative to the weight of the pellets.


Provided herein is a polyvinyl alcohol fine particle suitable for a pharmaceutical binder for obtaining a pharmaceutical tablet of properties including good sustained release, high hardness, and excellent friability. The polyvinyl alcohol fine particle of the present invention contains 25 mol% or more of a gauche structure in polyvinyl alcohol molecules within a 0.8-nm region inside the particle from the particle surface.


Patent
Nippon Synthetic Chemical Industry Co. | Date: 2017-02-09

Disclosed is a dispersing agent for agrochemicals, said dispersing agent which comprises a modified polyvinyl alcohol-based resin containing a structural unit having a nonionic hydrophilicity group in side chain, and having a saponification degree of 95 mol % or more. The dispersing agent for agrochemicals can provide a dispersion in which a hardly water-soluble agrochemical active ingredient employed for a dispersoid is dispersed in a stable state even in the case where the dispersoid has a relatively large particle size.


Patent
Nippon Synthetic Chemical Industry Co. | Date: 2017-07-26

Disclosed is a dispersing agent for agrochemicals, said dispersing agent which comprises a modified polyvinyl alcohol-based resin containing a structural unit having a nonionic hydrophilicity group in side chain, and having a saponification degree of 95 mol% or more. The dispersing agent for agrochemicals can provide a dispersion in which a hardly water-soluble agrochemical active ingredient employed for a dispersoid is dispersed in a stable state even in the case where the dispersoid has a relatively large particle size.


A packaging bag for packaging a polyvinyl alcohol-based resin that contains a modified group having active hydrogen, the packaging bag including a film having a water vapor permeability of 10 g/m^(2)/day or less. Accordingly, when a polyvinyl alcohol-based resin that contains a modified group having active hydrogen is packaged with the packaging bag, the storage stability of the polyvinyl alcohol-based resin that contains a modified group having active hydrogen can be improved, and hence an aqueous solution of the polyvinyl alcohol-based resin that contains a modified group having active hydrogen, the solution being reduced in insoluble matter content, can be obtained even after long-term storage thereof.


Patent
Nippon Synthetic Chemical Industry Co. | Date: 2016-10-26

Provided is a liquid spray agent for agricultural use, including a polyvinyl alcohol-based resin having a saponification degree of from 30 mol% to 60 mol%. With this, a liquid spray agent for agricultural use, which is used in agricultural and horticultural fields and has high fixation ability and excellent sprayability, can be provided.


The present invention provides a binder for a lithium ion secondary battery electrode that has good adhesive properties and a low degree of swelling with respect to an electrolytic solution. There is used a binder for a lithium ion secondary battery electrode, which comprises a polyvinyl acetal-based resin (A) containing structural units represented by chemical formulae (1) to (3): (R1 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms), and (R2 is a functional group containing an ethylenically unsaturated bond).


Patent
Nippon Synthetic Chemical Industry Co. | Date: 2016-09-07

Acetoacetyl group-containing polyvinyl alcohol resin powder containing a C1 to C3 alcohol in an amount of 0.5 to 4 wt% is produced by allowing a powdery polyvinyl alcohol resin to react with diketene, washing the resulting acetoacetyl group-containing polyvinyl alcohol resin particles with the C1 to C3 alcohol to remove an unreacted portion of the diketene, and drying the acetoacetyl group-containing polyvinyl alcohol resin particles at a temperature of 40C to 120C at a pressure of not higher than 20 kPa after the washing. The acetoacetyl group-containing polyvinyl alcohol resin powder thus produced is highly soluble in water.


Disclosed is an EVOH resin composition comprising 2 types of EVOH resins having a different ethylene content and saponification degree from each other. The EVOH resin composition can reduce the occurrence of streaks with retaining gas-barrier property even when applying to vacuum-pressure forming. The use of the resin composition also make it possible to provide a method for producing a container such as cup having excellent gas-barrier property and appearance by vacuum-pressure forming and the like.

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