Abstract: 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: i) preparing multiple blends of at least two nucleators wherein each blend containing the same nucleators in different weight ratios, wherein the blends include one or more blends in which one of the nucleators is a major weight fraction and one or more blends where the same nucleator is a minor weight fraction; ii) determining, for each blend, a minimum dissolution temperature when the blend completely dissolves in individual samples of the same molten polyolefin resin, wherein the concentration of each blend is substantially the same and below the saturation point in the molten polyolefin resin; and iii) identifying a blend that has a lower minimum dissolution temperature than the majority of the blends.

Abstract: The invention relates to a modifying agent for polyolefin resins, comprising a calcium-containing inorganic filler whose particle surface is treated with an alicyclic dicarboxylic acid represented by formula (1) and/or formula (2); a polyolefin resin composition comprising the modifying agent for polyolefin resins; and a polyolefin resin molded article comprising the composition. (In formula (1), R1 is a C1-C4 alkyl group, and R1 binds to the carbon at position 3 or 4 of a cyclohexane ring.) (In formula (2), R2 is a hydrogen atom or a C1-C4 alkyl group, and R2 binds to the carbon at position 3 or 4 of a cyclohexene ring.

Abstract: 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: (i) preparing a polyolefin resin composition comprising polyolefin resin, one or more optical brighteners, 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.

Abstract: 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.

Abstract: 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: (i) preparing a polyolefin resin composition comprising polyolefin resin, one or more optical brighteners, 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.

Abstract: The present invention relates to a method for identifying a blend of nucleators which is advantageous for providing reduced haze in a nucleated polyolefin material compared to blends of the same nucleators having different weight ratios of components.

Abstract: 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.

Abstract: Disclosed are a composition for controlling the crystallization rate of a polyolefin-based resin, the composition comprising (A) an amide-based compound which is a substituted or unsubstituted cyclohexylamide of 1,2,3-propanetricarboxylic acid or 1,2,3,4-butanetetracarboxylic acid and (B) a fatty acid metal salt, wherein the component (A):component (B) weight ratio is from 100:0 to 30:70; a method for controlling the crystallization rate of a polyolefin-based resin, comprising incorporating the composition into the polyolefin-based resin to obtain a polyolefin-based resin composition and molding the resin composition; molded products obtained by the method; and the like.

Abstract: 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, R1 represents a C2-30 saturated or unsaturated aliphatic polycarboxylic acid residue, and the aliphatic polycarboxylic acid has a valency of 2 to 6, and two to six R2 groups 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 R2 groups 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.

Abstract: The present invention provides a polyolefin-based resin composition comprising 100 weight parts of a polyolefin-based resin, 0.01 to 1 weight part of a specific amide-based component (A), 0.005 to 1 weight part of at least one inorganic compound (B) selected from the group consisting of hydrotalcite, calcined hydrotalcite, talc, alkali aluminum double hydroxides, magnesium hydroxide, magnesium oxide, calcium carbonate and calcium oxide. The present invention also provides polyolefin-based rein molded articles with excellent crystallinity, rigidity and transparency; etc.

Abstract: Disclosed are a composition for controlling the crystallization rate of a polyolefin-based resin, the composition comprising (A) an amide-based compound which is a substituted or unsubstituted cyclohexylamide of 1,2,3-propanetricarboxylic acid or 1,2,3,4-butanetetracarboxylic acid and (B) a fatty acid metal salt, wherein the component (A):component (B) weight ratio is from 100:0 to 30:70; a method for controlling the crystallization rate of a polyolefin-based resin, comprising incorporating the composition into the polyolefin-based resin to obtain a polyolefin-based resin composition and molding the resin composition; molded products obtained by the method; and the like.

Abstract: 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, R1 represents a C2-30 saturated or unsaturated aliphatic polycarboxylic acid residue, and the aliphatic polycarboxylic acid has a valency of 2 to 6, and two to six R2 groups 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 R2 groups 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.