Crosslinked resin compositions

Claim 2

A crosslinked resin composition obtained by cross-linking a composition consisting essentially of (A) 80-10 wt. % of a propylene polymer and (B) 20-90 wt. % of an ethylene/α-olefin compolymer having the following properties (i) to (iv) and prepared by copolymerizing ethylene wiht an α-olefin having 3 to 12 carbon atoms in the presence of a catalyst, said catalyst comprising a solid component and an organoaluminum compound, said solid component containing at least magnesium and titanium: ______________________________________ (i) Melt index 0.01-100 g/10 min. (ii) Density 0.870-0.905 g/cm.sup.3 (iii) Maximum peak temperature not lower than 100° C. measured according to a differential scanning calorimetry (DSC) (iv) Insolubles in boiling not less than 10 wt. %. n-hexane ______________________________________

Claim 3

A crosslinked resin composition as set forth in claim 1, wherein the α-olefin in the ethylene/α-olefin copolymer is an α-olefin having 3 to 6 carbon atoms.

Claim 4

A resin composition obtained by adding a propylene polymer to the crosslinked resin composition of claim 1 in such a range of an amount as satisfies the content of the ethylene/α-olefin copolymer (B) of 20-90 wt. % in the resulting composition.

Claim 5

A process for preparing a crosslinked resin composition, said process comprising crosslinking a composition consisting essentially of (A) 80-10 wt. % of a propylene polymer and (B) 20-90 wt. % of an ethylene/α-olefin copolymer prepared by copolymerizing ethylene with an α-olefin having 3 to 12 carbon atoms in the presence of a catalyst, said catalyst comprising a solid component and an organoaluminum compound, said solid component containing at least magnesium and titanium and said ethylene/α-olefin copolymer having the following properties (i) to (iv): ______________________________________ (i) Melt index 0.01-100 g/10 min. (ii) Density 0.870-0.905 g/cm.sup.3 (iii) Maximum peak temperature not lower than 100° C. measured according to a differential scanning calorimetry (DSC) (iv) Insolubles in boiling not less than 10 wt. %. n-hexane ______________________________________

Claim 6

A process for preparing a crosslinked resin composition, said process comprising crosslinking a composition consisting essentially of (A) 80-10 wt. % of a propylene polymer and (B) 20-90 wt. % of an ethylene/α-olefin copolymer prepared by copolymerizing ethylene with an α-olefin having 3 to 12 carbon atoms in the presence of a catalyst, said catalyst comprising a solid component and an organoaluminum compound, said solid component containing at least magnesium and titanium and said ethylene/α-olefin copolymer having the following properties (i) to (iv): ______________________________________ (i) Melt index 0.01-100 g/10 min. (ii) Density 0.870-0.905 g/cm.sup.3 (iii) Maximum peak temperature not lower than 100° C. measured according to a differential scanning calorimetry (DSC) (iv) Insolubles in boiling not less than 10 wt. %. n-hexane ______________________________________

Claim 7

The process of claim 4 wherein the α-olefin of the ethylene/α-olefin copolymer is an α-olefin having 3 to 6 carbon atoms.

Claim 8

The process of claim 4 comprising the further step of blending additional propylene polymer with the crosslinked resin composition in a amount to result in an ethylene/α-olefin copolymer content of 20-90 wt. % of the total composition.