Olefin-based copolymer composition
AssigneeSumitomo Chemical Company, Limited
InventorsHirofumi Johoji, Hidetake Hozumi, Tadaaki Nishiyama
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Abstract
An olefin based copolymer composition having excellent weather resistance and excellent recycling properties having an olefin based copolymer obtained by copolymerizing two or more olefins, wherein the olefins are selected from the group consisting of ethylene, propylene and alpha olefins having 4 to 20 carbon atoms, and the total number of carbon atoms of the two or more selected olefins is 6 or more in combination with other component(s).
Claims47
An olefin-based copolymer composition comprising the following component (a) in combination with any one component selected from the following components (b) to (i):
- (a) an olefin-based copolymer obtained by copolymerizing two or more olefins, wherein the olefins are selected from the group consisting of ethylene, propylene and α-olefins having 4 to 20 carbon atoms, and the total number of carbon atoms of the two or more selected olefins is 6 or more, wherein (a) has an intrinsic viscosity [η] measured using a tetralin solvent at 135° C. of about 0.3 to about 10;
- (b) a crystalline α-olefin-based polymer comprising polymerized monomer units of an α-olefin having 3 or more carbon atoms;
- (c) about 5-10% by weight of component (c) based on the total weight of the components (a) to (i) wherein (c) represents the following component (c-1) and/or component (c-2),
- (c-1) a block copolymer comprising (cH) a polymer block containing polymerized units of a vinyl aromatic compound and (cS) a polymer block containing polymerized units of a conjugated diene compound,
- (c-2) a hydrogenated product of the block copolymer recited in (c-1);
- (d) the component (b) in combination with an isobutylene-isoprene copolymer rubber and/or halogenated isobutylene-isoprene copolymer rubber;
- (e) the component (b) in combination with a tackifier resin;
- (f) the component (b), a component (f-1) which is an ethylene-propylene (non-conjugated diene) random copolymer rubber, and a component (f-2) which is an inorganic filler;
- (g) a component (g-1) and/or (g-2),
- (g-1) a benzotriazole light stabilizer having a benzotnazole skeleton and having a molecular weight of 100 to 5,000,
- (g-2) a hindered amine light stabilizer having a piperidyl group in its molecular skeleton and having a molecular weight of about 200 or more;
- (h) the component (f-1) in combination with the component (b) and/or an ethylene-based polymer having an ethylene content of 90 mol % or more;
- and
- (i) the component (b) and the inorganic filler (f-2)
- wherein component (a) has neither a peak of one J/g or more based on melting of a crystal nor a peak of one J/g or more based on crystallization, when measured by a differential scanning calorimetry (DSC) techniques, and said composition contains a component (c).
An olefin-based copolymer composition comprising an olefin-based copolymer (a′) obtained by copolymerizing a cyclic olefin and two or more olefins selected from the group consisting of ethylene, propylene and α-olefins having 4 to 20 carbon atoms and the total number of carbon atoms of the selected olefins is 6 or more, and one component selected from the following components (b) to (i):
- (b):
- a crystalline α-olefin-based polymer comprising an α-olefin having 3 or more carbon atoms;
- (c):
- the following component (c-1) and/or component (c-2),
- (c-1):
- a block copolymer comprising (cH) a polymer block containing a vinyl aromatic compound and (cS) a polymer block containing a conjugated diene compound,
- (c-2):
- a hydrogenated product of the block copolymer recited in (c-1);
- (d):
- the component (b) in combination with an isobutylene-isoprene copolymer rubber and/or halogenated isobutylene-isoprene copolymer rubber;
- (e):
- the component (b) in combination with a tackifier resin;
- (f):
- the component (b), a component (f-1) which is an ethylene-propylene (non-conjugated diene) random copolymer rubber, and a component (f-2) which is an inorganic filler;
- (g):
- a component (g-1) and/or (g-2),
- (g-1):
- a benzotriazole light stabilizer having a benzotriazole skeleton and having a molecular weight of 100 to 5,000,
- (g-2):
- a hindered amine light stabilizer having a piperidyl group in its molecular skeleton and having a molecular weight of about 200 or more;
- (h):
- the component (f-1) in combination with the component (b) and/or an ethylene-based polymer having an ethylene content of 90 mol % or more;
- and
- (i):
- the component (b) and the inorganic filler (f-2),
- wherein the content of the cyclic olefin is from about 0.01 to 20 mol %, and wherein the olefin copolymer (a′) has an intrinsic viscosity [η] of about 0.3 to 10 measured using a tetralin solvent at 135° C.
Dependencies are inferred from the claim text.