Olefin polymer composition
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsTetsunori Shinozaki, Mamoru Kioka
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Abstract
The olefin polymer composition according to the invention comprises [I] an (.alpha.-olefin/polyene copolymer-containing polymer in an amount of 0.005 to 99 by weight, said .alpha.-olefin/polyene copolymer-containing polymer comprising (i) an .alpha.-olefin/polyene copolymer and (ii) a polyethylene, and [II] a polyethylene in an amount of 1 to 99.995% by weight. The olefin polymer composition comprising the .alpha.-olefin/polyene copolymer-containing polymer [I] and the olefin polymer [II] has a high melt tension and an excellent moldability in an inflation molding, and further it can be molded into a large sized container, etc. by means of a blow molding or the like.
Claims16
An .alpha.-olefin polymer composition comprising:
- (I) an .alpha.-olefin/polyene copolymer-containing polymer in an amount of 0.005 to 99% by weight, said .alpha.-olefin/polyene copolymer-containing polymer comprising:
- (i) an .alpha.-olefin/polyene copolymer, and
- (ii) an olefin polymer;
- and
- (II) an olefin polymer in an amount of 1 to 99.995% by weight;
- wherein
- the polyene has 7 or more carbon atoms and has an olefinic double bond at both terminals, and the .alpha.-olefin/polyene copolymer contains constituent units derived from the .alpha.-olefin in an amount of 99.999 to 70 mol % and contains constituent units derived from the polyene in an amount of 0.001 to 30 mol %,
- the olefin polymer (ii) is a polymer of ethylene,
- the .alpha.-olefin/polyene copolymer-containing polymer (I) contains the .alpha.-olefin/polyene copolymer (i) in an amount of 0.001 to 99% by weight and contains the olefin polymer (ii) in an amount of 99.999 to 1% by weight, and
- the olefin polymer (II) is a polymer of ethylene;
- and wherein
- a melt tension of said .alpha.-olefin polymer composition satisfies the following relation:
- ##EQU4## where MT is a melt tension of an .alpha.-olefin copolymer composition comprising the .alpha.-olefin/polyene copolymer-containing polymer (I) and the olefin polymer (II),
- MT.sub.I is a melt tension of the .alpha.-olefin/polyene copolymer-containing polymer (I),
- MT.sub.II is a melt tension of the olefin polymer (II),
- W.sub.I is a weight percentage of the .alpha.-olefin/polyene copolymer-containing polymer (I), and
- W.sub.II is a weight percentage of the olefin polymer (II).
An .alpha.-olefin polymer composition for a master batch comprising:
- (I) an .alpha.-olefin/polyene copolymer-containing polymer in an amount of 0.005 to 99% by weight, said .alpha.-olefin/polyene copolymer-containing polymer comprising:
- (i) an .alpha.-olefin/polyene copolymer in an amount of 15 to 99% by weight, and
- (ii) an olefin polymer in an amount of 85 to 1% by weight;
- and
- (II) an olefin polymer in an amount of 99.995 to 1% by weight;
- wherein
- the polyene has 7 or more carbon atoms and has an olefinic double bond at both terminals, and the .alpha.-olefin/polyene copolymer contains constituent units derived from the .alpha.-olefin in an amount of 99.999 to 70 mol % and contains constituent units derived from the polyene in an amount of 0.001 to 30 mol %,
- the olefin polymer (ii) is a polymer of ethylene, and
- the olefin polymer (II) is a polymer of ethylene;
- and wherein
- a melt tension of said .alpha.-olefin polymer composition satisfies the following relation:
- ##EQU5## where MT is a melt tension of an .alpha.-olefin polymer composition comprising the .alpha.-olefin/polyene copolymer-containing polymer (I) and the olefin polymer (II),
- MT.sub.I is a melt tension of the .alpha.-olefin/polyene copolymer-containing polymer (I),
- MT.sub.II is a melt tension of the olefin polymer (II),
- W.sub.I is a weight percentage of the .alpha.-olefin/polyene copolymer-containing polymer (I), and
- W.sub.II is a weight percentage of the olefin polymer (II).
Dependencies are inferred from the claim text.