Polypropylene for precision injection molding applications

Details Polypropylene for precision injection molding applications Polypropylene for precision injection molding applications

C - Chemistry, Metallurgy

08

K

C08K 5/15 (2006.01) C08F 110/06 (2006.01) C08K 3/00 (2006.01) C08K 5/00 (2006.01) C08K 5/13 (2006.01) C08L 23/12 (2006.01)

Patent

CA 2430564

The present invention is a nucleated, metallocene catalyzed polypropylene homopolymer with an MFR less than 100 g/10 min, or desirably less than 21 g/10 min, the polypropylen useful in making casting cups and other such articles where a high degree of precision and accuracy in the casting is desirable, such as in contact lens casting cups.

L'invention concerne un homopolymère de polypropylène nucléé, catalysé par métallocène, qui présente un indice de fluidité inférieur à 100 g/10 min, ou de préférence inférieur à 21 g/10 min. Ce polypropylène est utile dans la fabrication de cupules de moulage et d'autres articles analogues qui requièrent un degré élevé de précision et de fidélité de moulage, p. ex. cupules de moulage de lentilles de contact.

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