| 摘要 |
A nucleating and clarifying additive composition comprising bis-3,4-dimethylbenzylidenesorbitol and bis-p-ethylbenzylidene sorbitol, wherein the weight ratio of bis-3,4-dimethylbenzylidene sorbitol to bis-p-ethylbenzylidene sorbitol is 45:55 to 25:75. Further disclosed is a polyolefin material comprising a poly olefin; and -3,4-dimethylbenzylidenesorbitol and bis-p-ethylbenzylidene sorbitol, wherein the weight ratio is 45:55 to 25:75. Also disclosed is a method for forming a polyolefin material comprising preparing a polyolefin resin composition comprising polyolefin resin, and bis-3,4-dimethylbenzylidene sorbitol and bis-p-ethylbenzylidene sorbitol, wherein the weight ratio is 45:55 to 25:75; and processing said polyolefin resin composition to form said polyolefin material. Also disclosed is said polyolefin resin composition and a polyolefin material prepared by the method disclosed above. Preferably the polyolefin is selected from polypropylene, polyethylene, polybutylene or blends or copolymers thereof. The invention provides a method of reducing haze in a polyolefin material. The polyolefin material preferably has a haze value, for a 1mm thick plaque, of below 20%. |
