New Japan Chemical Co., Ltd.

Njc Europe Limited

Yohei Uchiyama

Shohei Iwasaki

Kazuya Matsumoto

Sukehiro Niga

Takayuki Maeda

Estibaliz Santamaria

Hieu-Dinh Phan

Yurie Shinoda

Mitsuko Inoue

Hiroshi Kitagawa

Masahide Ishikawa

Sachio Kitagawa

Reira Ikoma

Chiaki Ueoka

Tomoyuki Miyata

The present invention aims to provide a method for improving the fluidity of a crystal nucleating agent for polyolefin resins without impairing other properties, and a polyolefin resin composition containing the crystal nucleating agent with improved fluidity and having excellent properties including transparency, and a molded article thereof. Adjustment to specific characteristics can improve the fluidity of a crystal nucleating agent for polyolefin resins, and the use of such a crystal nucleating agent having specific characteristics remarkably improves the workability during molding processing and provides a polyolefin resin composition excellent in properties such as transparency, and a molded article thereof.

Crystal nucleating agent for polyolefin resin, method for producing crystal nucleating agent for polyolefin resin, and method for improving fluidity of crystal nucleating agent for polyolefin resin

A crystal nucleating agent for polyolefin resins includes at least a raw material crystal nucleating agent (a) as a component (A), where the component (A) may be a diacetal compound. The crystal nucleating agent may have an angle of repose of 48&#xb0; or smaller, and a 1-mm-thick polyolefin resin molded article produced using the crystal nucleating agent may have a haze value of 12 (percent) or smaller as determined by a method in conformity with JIS K7136 (2000). The crystal nucleating agent may be a blend including a sulfuric acid ester salt and/or a sulfonic acid salt as a component (E) and a higher fatty acid as a component (F). The blend may be obtained by preparing a mixture of the component (A) swelled with an organic solvent, the component (E) dissolved in the organic solvent, and the component (F) and removing the organic solvent from the mixture.

Crystal nucleator for polyolefin resins, method for producing crystal nucleator for polyolefin resins, and method for improving fluidity of crystal nucleator for polyolefin resins

The present invention relates to a method for identifying a blend of nucleators with reduced haze in nucleated polyolefin material compared to blends of the same nucleators having different component weight ratios. The method comprises:

Method for identifying a blend of nucleators useful for preparing a nucleated polyolefin material

Provided is a metal salt of an alicyclic dicarboxylic acid with excellent dispersibility in polyolefin resins, and excellent crystallinity improving effect that is essential as a crystal nucleating agent for polyolefin resins, regardless of processing conditions. A method is also provided for producing the metal salt of an alicyclic dicarboxylic acid; a crystal nucleating agent containing the metal salt of an alicyclic dicarboxylic acid; a crystal nucleating agent composition for polyolefin resins containing the crystal nucleating agent and a fatty acid metal salt; a polyolefin resin composition containing the crystal nucleating agent; and a polyolefin resin molded article obtained using the polyolefin resin composition. Provided is a metal salt of an alicyclic dicarboxylic acid in which the alicyclic dicarboxylic acid is an alkyl substituent-containing cyclohexane-1,2-dicarboxylic acid, and the metal salt is a calcium salt, a hydroxyaluminum salt, a disodium salt, or a dilithium salt.

Metal salt of an alicyclic dicarboxylic acid having excellent dispersibility in polyolefin resin, production method for said metal salt of an alicyclic dicarboxylic acid, crystal nucleating agent for polyolefin resin containing said metal salt of an alicyclic dicarboxylic acid, crystal nucleating agent composition containing said crystal nucleating agent, polyolefin resin composition, and polyolefin resin molded article

The present invention aims to provide a method for improving the fluidity of a crystal nucleating agent for polyolefin resins without impairing other properties, and a polyolefin resin composition containing the crystal nucleating agent with improved fluidity and having excellent properties including transparency, and a molded article thereof. A crystal nucleating agent controlled to have specific characteristics can achieve improved fluidity, and the use of such a crystal nucleating agent having specific characteristics remarkably improves the workability during molding processing and provides a polyolefin resin composition excellent in properties such as transparency, and a molded article thereof.

The present invention relates to an additive composition and a low haze polyolefin material which may be prepared using said additive composition. In particular, the polyolefin material is prepared from a polyolefin resin composition comprising one or more optical brighteners, bis-3,4-dimethylbenzylidene sorbitol and bis-p-ethylbenzylidene sorbitol at a certain weight ratio. In an aspect, the present invention relates to a method for forming a polyolefin material; said method comprising:

Additive composition, method of blending same and a low haze polyolefin material and preparation thereof

The present invention relates to an additive composition and a low haze polyolefin material which may be prepared using said additive composition. In particular, the polyolefin material is prepared from a polyolefin resin composition comprising bis-3,4-dimethylbenzylidene sorbitol and bis-p-ethylbenzylidene sorbitol at a certain weight ratio. In an aspect, the present invention relates to a method for forming a polyolefin material; said method comprising: (i) preparing a polyolefin resin composition comprising polyolefin resin and bis-3,4-dimethylbenzylidene sorbitol and bis-p-ethylbenzylidene sorbitol, wherein the weight ratio of bis-3,4-dimethylbenzylidene sorbitol to bis-p-ethylbenzylidene sorbitol in the polyolefin resin composition is 45:55 to 25:75; (ii) processing said polyolefin resin composition to form said polyolefin material.

A method for inhibiting the crystal growth rate of an amide compound present in a molten polyolefin-based resin and a method for producing a polyolefin-based resin molded article are provided. A phenol compound is incorporated into an amide compound-containing polyolefin-based resin such that a weight ratio, amide compound:phenol compound, is 60:40 to 10:90.

Method for inhibiting crystal growth rate of amide compound and method for producing molded article of polyolefin-based resin

Disclosed are a mixture of at least two amide-based compounds represented by General Formula (1): wherein a represents an integer of 2 to 6, Rrepresents a Csaturated or unsaturated aliphatic polycarboxylic acid residue, and the aliphatic polycarboxylic acid has a valency of 2 to 6, and two to six Rgroups are the same or different, and each represent a trans-2-alkylcyclohexylamine residue or a cis-2-alkylcyclohexylamine residue, the mixture having a content of a trans-2-alkylcyclohexylamine residue of at least 70 mole % but less than 100 mole % of the total 2-alkylcyclohexylamine residues in the mixture, or an all-trans amide-based compound wherein all of the 2 to 6 Rgroups represent a trans-2-alkylcyclohexylamine residue; a polyolefin resin nucleating agent comprising the mixture or the all-trans amide-based compound; a polyolefin resin composition containing the amide-based compound or the mixture; a molded article obtainable by molding the composition.

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Kyoto, Japan

Yohei Uchiyama