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US 6,747,077 B2Granted
Stabilized metallocene polypropylene
AssigneeCiba Specialty Chemicals Corporation
InventorsFrançois Gugumus, Nicola Lelli
Life of this patent
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Abstract
A composition containing polypropylene prepared by polymerization over a metallocene catalyst or a polypropylene copolymer prepared by polymerization over a metallocene catalyst, and a stabilizer mixture comprising (A) for example the compound of the formula (A-I-1-a) wherein n1 is a number from 2 to 20; and (B) for example the compound of the formula (B-I-2-a);
Claims8
A composition containing polyproylene prepared by polymerization over a metallocene catalyst or a polypropylene copolymer prepared by polymerization over a metallocene catalyst, and a stabilizer mixture comprising
- (A) a compound of the formula (A-I-1), (A-I-2), (A-I-3) or (A-I-4), or a product (A-II-a) or a compound of the formula (A-III-1);
- wherein A6 as hydrogen, C1-C4alkyl or C1-C8alkoxy and n1 is a number from 2 to 25;
- a product (A-II-a) obtainable by reacting a product, obtained by reaction of a polyamine of the formula (A-II-1-a) with cyanuric chloride, with a compound of the formula (A-II-2-a)
- wherein A8 as hydrogen C1-C4alkyl or C1-C8alkoxy;
- and
- B) a compound of the formula (B-I-2),
- wherein E1 is hydrogen, C1-C4alkyl, C1-C4alkoxy or C1-C4alkoxy substituted by —OH.
4 more elements
Dependencies are inferred from the claim text.