Polypropylene resin composition

Abstract

A polypropylene resin composition comprising (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min and (B) 0.2 to 20 weight parts of an olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g and/or a polyethylene resin having a density of 0.895 to 0.945 g/cc and a melt flow rate of 0.05 to 15 g/10 min, which have undergone an ionization ray-irradiation treatment and/or a treatment of adding 0.05 to 5 weight parts of an organic peroxide to 100 weight parts of the aforesaid polypropylene resin composition comprising (A) and (B) and then melting.

1 - 5 . (canceled) 
   
   
       6 . A polypropylene resin composition comprising (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min measured at 230° C. under a load of 2.16 kg; and (B) 0.2 to 20 weight parts of at least one polyolefin selected from the group consisting of an olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g, a polyethylene resin having a density of 0.895 to 0.945 g/cc and a melt flow rate of 0.05 to 15 g/10 min measured at 190° C. under a load of 2.16 kg, and mixtures thereof, wherein (A) and (B) of the polypropylene resin composition totals 100 weight parts, and has undergone at least one peroxide treatment process, the peroxide treatment process comprising adding from 0.05 to 5 weight parts of at least one organic peroxide to the polypropylene resin composition, and then melting said polypropylene resin composition. 
   
   
       7 . The polypropylene resin composition of  claim 6  further comprising 0.01 to 2 weight parts of (C) selected from the group consisting of an oxide of a metal of the group 2 or the group 12 of the periodic table, a metal alkoxide represented by the following general formula (I):
   M(R) m-n (OR′) n   (I)   
     wherein R and R′ each represents an alkyl group having a carbon number of 1 to 20, m is 3 or 4, n is an integer satisfying m≧n≧2, and M represents B, Al, Si, or a metal atom of the group 4 or the group 5 of the periodic table, and mixtures thereof; wherein (C) is added to 100 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       8 . The polypropylene resin composition of  claim 6 , comprising 5 to 95 weight parts of the polypropylene resin composition comprising (A) and (B), and further comprising (D) 95 to 5 weight parts of a polypropylene resin having a melt flow rate of 0.01 to 100 g/10 min measured at 230° C. under a load of 2.16 kg. 
   
   
       9 . The polypropylene resin composition of  claim 6 , further comprising 0.05 to 20 weight parts of (E) a nucleating agent added to 100 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       10 . The polypropylene resin composition of  claim 6 , wherein the peroxide treatment process comprises adding from 0.1 to 3 weight parts of an organic peroxide to the polypropylene resin composition. 
   
   
       11 . The polypropylene resin composition of  claim 6 , wherein the peroxide treatment process comprises adding from 0.2 to 3 weight parts of an organic peroxide to the polypropylene resin composition. 
   
   
       12 . The polypropylene resin composition of  claim 6 , wherein the organic peroxide is selected from diacyl peroxides, peroxyesters, peroxydicarbonates, and mixtures thereof. 
   
   
       13 . The polypropylene resin composition of  claim 6 , wherein the organic peroxide is selected from lauroyl peroxide, isobutyl peroxide, 3,5,5-trimethylhexanol peroxide, octanol peroxide, stearoyl peroxide, succinperoxide, t-butylperoxy 2-ethylhexanol, t-butyl peroxyisobutyrate, t-hexylperoxy 2-ethylhexanol, t-hexyl peroxypivalate, t-butylperoxy isopropyl monocarbonate, t-butylperoxy 2-ethylhexyl monocarbonate, di-n-propyl peroxydicarbonate, diisopropyl peroxydicarbonate, bis(4-t-butylcyclohexyl)peroxycarbonate, di-2-ethylhexyl peroxydicarbonate, dicetyl peroxydicarbonate, dimyristyl peroxydicarbonate, dibutyl peroxydicarbonate, bis(4-t-butyl-cyclohexyl)peroxydicarbonate, and mixtures thereof. 
   
   
       14 . A polypropylene resin composition comprising (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min measured at 230° C. under a load of 2.16 kg; and (B) 0.2 to 20 weight parts of at least one polyolefin selected from the group consisting of an olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g, a polyethylene resin having a density of 0.895 to 0.945 g/cc and a melt flow rate of 0.05 to 15 g/10 min measured at 190° C. under a load of 2.16 kg, and mixtures thereof, wherein (A) and (B) of the polypropylene resin composition totals 100 weight parts, and has undergone at least one peroxide treatment process, the peroxide treatment process comprising adding from 0.05 to 5 weight parts of at least one organic peroxide to the polypropylene resin composition, and then melting said polypropylene resin composition to form a final polypropylene resin composition, with the final polypropylene resin composition comprising a melt tension of 3 g or more. 
   
   
       15 . The polypropylene resin composition of  claim 14 , wherein the melt tension is 4 g or more. 
   
   
       16 . A process for producing a polypropylene resin composition comprising:
 (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min measured at 230° C. under a load of 2.16 kg; and   (B) 0.2 to 20 weight parts of at least one polyolefin selected from the group consisting of an olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g, a polyethylene resin having a density of 0.895 to 0.945 g/cc and a melt flow rate of 0.05 to 15 g/10 min. measured at 190° C. under a load of 2.16 kg, and mixtures thereof, wherein said process comprises:
 treating the polypropylene resin (A) and the polyolefin (B) with at least one peroxide treatment process, wherein the peroxide treatment process comprises adding from 0.05 to 5 weight parts of at least one organic peroxide to the polypropylene resin (A) and the polyolefin (B); 
 mixing the polypropylene resin (A) with the polyolefin (B) to form the polypropylene resin composition; and 
 melting the polypropylene resin composition after the polypropylene resin (A) and the polyolefin (B) are treated with at least one peroxide treatment process and the polypropylene resin (A) and the polyolefin (B) are mixed to form the polypropylene resin composition. 
   
   
   
       17 . The process of  claim 16 , wherein 0.01 to 2 weight parts of (C), selected from the group consisting of an oxide of a metal of the group 2 or the group 12 of the periodic table, a metal alkoxide represented by the following general formula (I):
   M(R) m-n (OR′) n   (I)   
     wherein R and R′ each represents an alkyl group having a carbon number of 1 to 20, m is 3 or 4, n is an integer satisfying m≧n≧2, and M represents B, Al, Si, or a metal atom of the group 4 or the group 5 of the periodic table, and mixtures thereof; wherein (C) is added to 100 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       18 . The process of  claim 16 , further comprising adding 95 to 5 weight parts of (D), a polypropylene resin having a melt flow rate of 0.01 to 100 g/10 min measured at 230° C. under a load of 2.16 kg, to 5 to 95 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       19 . The process of  claim 16 , further comprising adding 0.05 to 20 weight parts of (E), a nucleating agent, to 100 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       20 . The process of  claim 16 , wherein the peroxide treatment process comprises adding from 0.1 to 3 weight parts of an organic peroxide to the polypropylene resin composition. 
   
   
       21 . The process of  claim 16 , wherein the peroxide treatment process comprises adding from 0.2 to 3 weight parts of an organic peroxide to the polypropylene resin composition. 
   
   
       22 . The process of  claim 16 , wherein the organic peroxide is selected from diacyl peroxides, peroxyesters, peroxydicarbonates, and mixtures thereof. 
   
   
       23 . The process of  claim 16 , wherein the organic peroxide is selected from lauroyl peroxide, isobutyl peroxide, 3,5,5-trimethylhexanol peroxide, octanol peroxide, stearoyl peroxide, succinperoxide, t-butylperoxy 2-ethylhexanol, t-butyl peroxyisobutyrate, t-hexylperoxy 2-ethylhexanol, t-hexyl peroxypivalate, t-butylperoxy isopropyl monocarbonate, t-butylperoxy 2-ethylhexyl monocarbonate, di-n-propyl peroxydicarbonate, diisopropyl peroxydicarbonate, bis(4-t-butylcyclohexyl) peroxycarbonate, di-2-ethylhexyl peroxydicarbonate, dicetyl peroxydicarbonate, dimyristyl peroxydicarbonate, dibutyl peroxydicarbonate, bis(4-t-butyl-cyclohexyl) peroxydicarbonate, and mixtures thereof. 
   
   
       24 . A process for producing a polypropylene resin composition comprising:
 (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min measured at 230° C. under a load of 2.16 kg; and   (B) 0.2 to 20 weight parts of at least one polyolefin selected from the group consisting of an olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g, a polyethylene resin having a density of 0.895 to 0.945 g/cc and a melt flow rate of 0.05 to 15 g/10 min. measured at 190° C. under a load of 2.16 kg, and mixtures thereof, wherein said process comprises:
 mixing the polypropylene resin (A) with the polyolefin (B) to form the polypropylene resin composition; 
 treating the polypropylene resin composition with at least one peroxide treatment process, wherein the peroxide treatment process comprises adding from 0.05 to 5 weight parts of at least one organic peroxide to the polypropylene resin composition; and 
 melting the polypropylene resin composition after the polypropylene resin composition is treated with at least one peroxide treatment process. 
   
   
   
       25 . The process of  claim 24 , wherein 0.01 to 2 weight parts of (C), selected from the group consisting of an oxide of a metal of the group 2 or the group 12 of the periodic table, a metal alkoxide represented by the following general formula (I):
   M(R) m-n (OR′) n   (I)   
     wherein R and R′ each represents an alkyl group having a carbon number of 1 to 20, m is 3 or 4, n is an integer satisfying m≧n≧2, and M represents B, Al, Si, or a metal atom of the group 4 or the group 5 of the periodic table, and mixtures thereof; wherein (C) is added to 100 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       26 . The process of  claim 24 , further comprising adding 95 to 5 weight parts of (D), a polypropylene resin having a melt flow rate of 0.01 to 100 g/10 min measured at 230° C. under a load of 2.16 kg, to 5 to 95 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       27 . The process of  claim 24 , further comprising adding 0.05 to 20 weight parts of (E), a nucleating agent, to 100 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       28 . The process of  claim 24 , wherein the peroxide treatment process comprises adding from 0.1 to 3 weight parts of an organic peroxide to the polypropylene resin composition. 
   
   
       29 . The process of  claim 24 , wherein the peroxide treatment process comprises adding from 0.2 to 3 weight parts of an organic peroxide to the polypropylene resin composition. 
   
   
       30 . The process of  claim 24 , wherein the organic peroxide is selected from diacyl peroxides, peroxyesters, peroxydicarbonates, and mixtures thereof. 
   
   
       31 . The process of  claim 24 , wherein the organic peroxide is selected from lauroyl peroxide, isobutyl peroxide, 3,5,5-trimethylhexanol peroxide, octanol peroxide, stearoyl peroxide, succinperoxide, t-butylperoxy 2-ethylhexanol, t-butyl peroxyisobutyrate, t-hexylperoxy 2-ethylhexanol, t-hexyl peroxypivalate, t-butylperoxy isopropyl monocarbonate, t-butylperoxy 2-ethylhexyl monocarbonate, di-n-propyl peroxydicarbonate, diisopropyl peroxydicarbonate, bis(4-t-butylcyclohexyl) peroxycarbonate, bis(4-t-butylcyclohexyl) peroxydicarbonate, di-2-ethylhexyl peroxydicarbonate, dicetyl peroxydicarbonate, dimyristyl peroxydicarbonate, dibutyl peroxydicarbonate, and mixtures thereof. 
   
   
       32 . A process for producing a polypropylene resin composition comprising:
 (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min measured at 230° C. under a load of 2.16 kg; and   (B) 0.2 to 20 weight parts of at least one polyolefin selected from the group consisting of an olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g, a polyethylene resin having a density of 0.895 to 0.945 g/cc and a melt flow rate of 0.05 to 15 g/10 min. measured at 190° C. under a load of 2.16 kg, and mixtures thereof, wherein said process comprises:
 treating the polypropylene resin (A) and the polyolefin (B) with at least one peroxide treatment process, wherein the peroxide treatment process comprises adding from 0.05 to 5 weight parts of at least one organic peroxide to the polypropylene resin (A) and the polyolefin (B); 
 mixing the polypropylene resin (A) with the polyolefin (B) to form the polypropylene resin composition; and 
 melting the polypropylene resin composition after the polypropylene resin (A) and the polyolefin (B) are treated with at least one peroxide treatment process and the polypropylene resin (A) and the polyolefin (B) are mixed to form the polypropylene resin composition to form a final polypropylene resin composition comprising a melt tension of 3 g or more. 
   
   
   
       33 . The process of  claim 32 , wherein the melt tension is 4 g or more. 
   
   
       34 . A process for producing a polypropylene resin composition comprising:
 (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min measured at 230° C. under a load of 2.16 kg; and   (B) 0.2 to 20 weight parts of at least one polyolefin selected from the group consisting of an olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g, a polyethylene resin having a density of 0.895 to 0.945 g/cc and a melt flow rate of 0.05 to 15 g/10 min. measured at 190° C. under a load of 2.16 kg, and mixtures thereof, wherein said process comprises:
 mixing the polypropylene resin (A) with the polyolefin (B) to form the polypropylene resin composition; 
 treating the polypropylene resin composition with at least one peroxide treatment process, wherein the peroxide treatment process comprises adding from 0.05 to 5 weight parts of at least one organic peroxide to the polypropylene resin composition; and 
 melting the polypropylene resin composition after the polypropylene resin composition is treated with at least one peroxide treatment process to form a final propylene resin composition comprising a melt tension of 3 g or more. 
   
   
   
       35 . The process of  claim 34 , wherein the melt tension is 4 g or more. 
   
   
       36 . A polypropylene resin composition comprising (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min measured at 230° C. under a load of 2.16 kg; and (B) 0.2 to 20 weight parts of at least one polyolefin selected from the group consisting of an olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g, a polyethylene resin having a density of 0.895 to 0.945 g/cc and a melt flow rate of 0.05 to 15 g/10 min measured at 190° C. under a load of 2.16 kg, and mixtures thereof, wherein (A) and (B) of the polypropylene resin composition totals 100 weight parts and has undergone at least one peroxide treatment process, the peroxide treatment process comprising adding from 0.05 to 5 weight parts of at least one organic peroxide to the polypropylene resin composition, and then melting said polypropylene resin composition to form a final polypropylene resin composition, wherein the final polypropylene resin composition further comprises a melt flow rate of 0.1 to 20 g/10 min. measured at 230° C. under a load of 2.16 kg. 
   
   
       37 . The polypropylene resin composition of  claim 36 , wherein the final polypropylene resin composition further comprises a melt flow rate of 0.15 to 15 g/10 min measured at 230° C. under a load of 2.16 kg. 
   
   
       38 . The polypropylene resin composition of  claim 36 , wherein the final polypropylene resin composition further comprises a melt tension of 3 g or more. 
   
   
       39 . The polypropylene resin composition of  claim 36 , wherein the final polypropylene resin composition further comprise a melt tension of 4 g or more. 
   
   
       40 . A polypropylene resin composition comprising (A) 99.8 to 80 weight parts of a polypropylene resin having a melt flow rate of 0.1 to 50 g/10 min measured at 230° C. under a load of 2.16 kg; and (B) 0.2 to 20 weight parts of at least one olefin copolymer rubber having an intrinsic viscosity [η] of 0.5 to 4.0 dl/g, wherein (A) and (B) of the polypropylene resin composition totals 100 weight parts and has undergone at least one peroxide treatment process, the peroxide treatment process comprising adding from 0.05 to 5 weight parts of at least one organic peroxide to the polypropylene resin composition, and then melting said polypropylene resin composition. 
   
   
       41 . The polypropylene resin composition of  claim 40  further comprising 0.01 to 2 weight parts of (C) selected from the group consisting of an oxide of a metal of the group 2 or the group 12 of the periodic table, a metal alkoxide represented by the following general formula (I):
   M(R) m-n (OR′) n   (I)   
     wherein R and R′ each represents an alkyl group having a carbon number of 1 to 20, m is 3 or 4, n is an integer satisfying m≧n≧2, and M represents B, Al, Si, or a metal atom of the group 4 or the group 5 of the periodic table, and mixtures thereof; wherein (C) is added to 100 weight parts of the polypropylene resin composition comprising (A) and (B). 
   
   
       42 . The polypropylene resin composition of  claim 40 , comprising 5 to 95 weight parts of the polypropylene resin composition comprising (A) and (B), and further comprising (D) 95 to 5 weight parts of a polypropylene resin having a melt flow rate of 0.01 to 100 g/10 min measured at 230° C. under a load of 2.16 kg. 
   
   
       43 . The polypropylene resin composition of  claim 40 , further comprising 0.05 to 20 weight parts of (E) a nucleating agent added to 100 weight parts of the polypropylene resin composition comprising (A) and (B), wherein (E) is added to 100 weight parts of the polypropylene resin composition comprising (A) and (B).