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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.


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.


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.


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.


Patent
Nippon Synthetic Chemical Industry Co. | Date: 2016-06-27

Provided is a melt-molding material using saponified ethylene-vinyl ester-based copolymer (EVOH resin), and has excellent feed property during melt extrusion molding. The molding material consists of EVOH resin pellets comprising a first EVOH resin pellet having approximately circular or elliptical cross section and a second EVOH resin pellet having a cylindrical shape. The ratio in weight of the first EVOH resin pellet (A1) to the second EVOH resin pellet (A2), A1/A2, is from 99/1 to 20/80.


Patent
Nippon Synthetic Chemical Industry Co. | Date: 2016-04-22

As a molding material comprising two or more EVOH resins differing in their ethylene unit content, disclosed is a pellet mixture of two or more types of EVOH resin pellets differing in their ethylene unit content. The pellet mixture has excellent feed property and film moldability with reduced surge in melt extrusion molding. Disclosed is a molding material comprising the pellet mixture and lubricant, in which more than 75% by weight of the lubricant is carried on their surface of low ethylene EVOH resin pellets having lowest ethylene unit content.


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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