Claims
- 1. An elastomeric thermosplastic polyolefin composition comprising (percent by weight):(I) 40-97% of a heterophasic olefin polymer composition comprising: (A) 5-50% of a crystalline propylene homopolymer with isotactic index greater than 80% or crystalline copolymer of propylene and ethylene or a CH2═CHR α-olefin, wherein R is a C2-C8 alkyl radical, or crystalline copolymer of propylene, ethylene and a CH2═CHR α-olefin, wherein R is a C2-C8 alkyl radical, or blend thereof; said copolymers containing more than 85% of propylene and having an isotactic index greater than 80%; (B) 0-20% of a crystalline copolymer of ethylene with propylene or with a CH2═CHR α-olefin, wherein R is a C2-C8 alkyl radical, or both propylene and said alpha-olefin; the ethylene content being at least 75 wt %, said crystalline copolymer being insoluble in xylene at ambient temperature; and (C) 50-95% of an elastomeric copolymer of ethylene with propylene or with a CH2═CHR α-olefin, wherein R is a C2-C8 alkyl radical, or both propylene and said alpha-olefin, and optionally with minor amounts of a diene, said elastomeric copolymer containing ethylene in an amount smaller than 40% and being soluble in xylene at ambient temperature; and (II) 3-60% of an elastomeric polymer having a hardness (Shore A, ASTM D-2240) equal to or less than 90 points selected from the group consisting of: (i) copolymers of ethylene with a C3-C10 α-olefin containing at least 20 wt % of C3-C10 α-olefin (13C-NMR analysis) and having a Mw/Mn ratio less than 4; (ii) ethylene-methyl acrylate copolymers containing from 15 to 30 wt % of methyl acrylate units and having MFR from 1 to 10 g/10 min (ASTM D-1238); and (iii) saturated or unsaturated styrene block copolymers, linear or branched, containing at least one comonomer selected from butadiene, butylene, ethylene and isoprene.
- 2. The composition of claim 1 wherein elastomeric copolymer (II) is selected from the group consisting of elastomeric copolymers of:(a) elastomeric copolymers of ethylene with 1-octene having from 20 wt % to 40 wt % of 1-octene (13C-NMR analysis); (b) elastomeric thermoplastic copolymers of ethylene with 1-butene having from 20 wt % to 40 wt % of 1-butene (13C-NMR analysis); (c) ethylene-methyl acrylate copolymers containing about 20-25 wt % of methyl acrylate units and having MFR from 1.5 to 6 g/10 min; and (d) unsaturated linear block copolymers of styrene with isoprene or butadiene and saturated linear block copolymers of styrene with ethylene and butylene.
- 3. The composition of claim 1 wherein heterophasic olefin polymer composition (I) comprises from 10 to 40 wt % of component (A), from 0 to 15 wt % of component (B) and from 50 to 75 wt % of component (C).
- 4. The composition of claim 1 wherein elastomeric copolymer (II) is a copolymer containing 66 wt % of ethylene and 34 wt % of 1-octene (13C-NMR analysis), having a hardness of 75 Shore A points (according to ASTM D-2240), MFR of 10 g/10 min (according to ASTM D 1238, condition L) and a density of 0.87 g/ml according to method ASTM D 792.
- 5. A method for producing an article of manufacture by injecting, co-injecting moulding or sequential injection moulding the composition of claim 1 to produce the article of manufacture.
- 6. A method for producing an article of manufacture by extruding the composition of claim 1 to produce the article of manufacture.
- 7. A method for producing an article of manufacture by blow moulding the composition of claim 1 to produce the article of manufacture.
- 8. A shaped manufactured article of the composition of claim 1.
- 9. Films and laminates made of the composition as claimed in claims 1-4.
Priority Claims (1)
Number |
Date |
Country |
Kind |
97200530 |
Feb 1997 |
EP |
|
Parent Case Info
This is a continuation of PCT International Application No. PCT/EP98/00859, filed Feb. 16, 1998.
US Referenced Citations (7)
Foreign Referenced Citations (7)
Number |
Date |
Country |
4211413 |
Oct 1993 |
DE |
457 082 |
Apr 1991 |
EP |
472 946 |
Mar 1992 |
EP |
611 801 |
Aug 1994 |
EP |
633289 |
Jan 1995 |
EP |
WO 9222607 |
Dec 1992 |
WO |
WO 9622327 |
Jul 1996 |
WO |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP98/00859 |
Feb 1998 |
US |
Child |
09/172959 |
|
US |