Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
A process for the production of a propylene polymer film or laminate comprising filming or calendering a heterophasic propylene polymer composition comprising: A) 10-60 parts by weight of homopolymer polypropylene having an isotactic index greater than 90 or of a crystalline copolymer of propylene with ethylene and/or other alpha-olefins containing more than 85% by weight of propylene and having an isotactic index greater than 85; B) 10-40 parts by weight of a copolymer containing prevailingly ethylene, which is insoluble in xylene at room temperature; C) 30-60 parts by weight of an amorphous ethylenepropylene copolymer, which is soluble in xylene at room temperature and contains 40-70% by weight of ethylene; said propylene polymer composition having a ratio between the intrinsic viscosities, in tetrahydronaphthalene at 135°C, of the portion soluble in xylene and of the portion insoluble in xylene at room temperature of from 0.8 to 1.2.
Claim 2
Dependent Claim
19 words
The process of to claim 1, wherein component (A) is a crystalline copolymer of propylene with butene or 4-methyl-l-pentene.
Claim 3
Dependent Claim
15 words
The process of claim 1, wherein component (C) further contains minor amounts of a diene.
Claim 4
Dependent Claim
101 words
A thermoweldable film, having high elastomeric properties, comprising a composition which is comprised of: A) 10-60 parts by weight of homopolymer polypropylene having an isotactic index greater than 90 or of a crystalline copolymer of propylene with ethylene and/or other alpha-olefins, containing more than 85% by weigth of propylene and having an isotactic index greater than 85; B) 10-40 parts by weight of a copolymer containing prevailingly ethylene, which is insoluble in xylene at room temperature; C) 30-60 parts by weight of an amorphous ethylenepropylene copolymer, which is soluble in xylene at room temperature and contains 40-70% by weight of ethylene.
Claim 5
Dependent Claim
18 words
The film of claim 4, wherein component (A) is a crystalline copolymer of propylene with butene or 4-methyl-l-pentene.
Claim 6
Dependent Claim
15 words
The film of claim 4, wherein component (C) further contains minor amounts of a diene.
Claim 7
Dependent Claim
12 words
The film of claim 4, having a thickness smaller than 100 µm.
Claim 8
Dependent Claim
101 words
A thermoweldable laminate having high elastomeric properties, comprising a composition which is comprised of: A) 10-60 parts by weight of homopolymer polypropylene having an isotactic index greater than 90 or of a crystalline copolymer of propylene with ethylene and/or other alpha-olefins, containing more than 85% by weigth of propylene and having an isotactic index greater than 85; B) 10-40 parts by weight of a copolymer containing prevailingly ethylene, which is insoluble in xylene at room temperature; C) 30-60 parts by weight of an amorphous ethylene-propylene copolymer, which is soluble in xylene at room temperature and contains 40-70% by weight of ethylene.
Claim 9
Dependent Claim
18 words
The laminate of claim 8, wherein component (A) is a crystalline copolymer of propylene with butene or 4-methyl-1-pentene.
Claim 10
Dependent Claim
14 words
The laminate of claim 8, wherein component (C) contains minor amounts of a diene.
Claim 11
Dependent Claim
13 words
The laminate of claim 8, having a thickness of at least 100 µm.