Abstract: The present invention provides a particulate nucleating agent and a method for manufacturing the same. The particulate nucleating agent has an average radial crushing strength of 0.2-25.0N/cm. A weight content of the active ingredients in the particulate nucleating agent is no less than 90 wt %. The particulate nucleating agent is a transparent particulate nucleating agent. The particulate nucleating agent of the present invention can be fed smoothly during production without the change of the chemical composition thereof, so as to realize uniform dispersion in the polymer and reduce defects such as white dots in the polymer. The present invention breaks the traditional view of refining particles of nucleating agent to obtain a polymer having desirable properties, and avoids adding large amount of materials except the active ingredients during the granulation process of the nucleating agent.

Abstract: The present application provides a nucleator composition including trace amount of an aromatic aldehyde, a sorbitol diacetal and a sorbitol triacetal. The nucleator composition of the present application can improve nucleation performance of a polymer, increase transparency, glossiness, flexural modulus and tensile strength of polymer films, polymer sheets and polymer moulding articles, and can improve heat distortion temperature and dimensional stability of polymer articles. In addition, a polymer contains the nucleator composition of the present application will not give off unpleasant odour.

Abstract: The present invention provides a nucleator composition comprising sorbitol acetal, sorbitol diacetal, and sorbitol triacetal. The nucleator composition can improve the nucleation performance of a polymer, increase transparency, glossiness, flexural modulus and tensile strength of polymer films, polymer sheets and polymer molding articles, and increase heat distortion temperature and dimensional stability of polymer articles.

Abstract: Disclosed are a ?-crystal form nucleating agent composition for polypropylene and an application thereof. The composition is prepared by proportionally mixing barium tetrahydrophthalate, calcium tetrahydrophthalate and the like with adjuvants, such as hydrotalcite or calcium carbonate. The composition has better functions than a single-component ?-nucleating agent. The impact strength of polypropylene subjected to nucleation modification by the ?-crystal form nucleating agent composition can be improved by up to 6 times, and the heat distortion temperature is improved by about 10° C. to 20° C.; in addition, while the impact strength is improved, the flexural modulus of polypropylene can be improved, namely, the rigidity of polypropylene is improved. Therefore, the mechanical and thermal properties of polypropylene are improved.

Abstract: A nucleating agent composition for increasing rigidity and toughness of polypropylene is provided. The nucleating agent composition comprises a carboxylate nucleating agent and a phosphate nucleating agent. The carboxylate nucleating agent is selected from the group consisting of sodium benzoate and hydroxyl aluminum para-tertiary butyl benzoate, and the phosphate nucleating agent is selected from any one of sodium 2,2?-methylene-di(4,6-di-t-butyl phenyl) phosphate and aluminum bis[2,2?-methylene-di(4,6-di-t-butylphenyl)] phosphate. The nucleating agent composition according to the present invention not only can significantly improve the bending modulus and thermal deformation temperature of polypropylene, but also can improve the impact strength of polypropylene.

Abstract: A nucleating agent composition for increasing rigidity and toughness of polypropylene is provided. The nucleating agent composition comprises a carboxylate nucleating agent and a phosphate nucleating agent. The carboxylate nucleating agent is selected from the group consisting of sodium benzoate and hydroxyl aluminum para-tertiary butyl benzoate, and the phosphate nucleating agent is selected from any one of sodium 2,2?-methylene-di(4,6-di-t-butyl phenyl) phosphate and aluminum bis[2,2?-methylene-di(4,6-di-t-butylphenyl)] phosphate. The nucleating agent composition according to the present invention not only can significantly improve the bending modulus and thermal deformation temperature of polypropylene, but also can improve the impact strength of polypropylene.