A supported three-center catalyst, a preparation method and the use are provided. The catalyst comprises a porous inorganic carrier, an organic chromium active component, an inorganic chromium active component and an inorganic vanadium active component, and may further comprise a catalyst modifying component. A method involves, by means of one or more steps of dipping and drying or dipping, drying and high-temperature roasting procedures, respectively converting an organic chromium source, a chromium source, a vanadium source and a Q component into an organic chromium active component precursor, an inorganic chromium active component precursor, an inorganic vanadium active component precursor and a catalyst modifying component that are supported on the surface of the porous inorganic carrier, and then activating same with an organometallic cocatalyst or a polymerization monomer, so as to obtain the supported three-center catalyst.

A supported three-center catalyst, a preparation method and the use are provided. The catalyst comprises a porous inorganic carrier, an organic chromium active component, an inorganic chromium active component and an inorganic vanadium active component, and may further comprise a catalyst modifying component. A method involves, by means of one or more steps of dipping and drying or dipping, drying and high-temperature roasting procedures, respectively converting an organic chromium source, a chromium source, a vanadium source and a Q component into an organic chromium active component precursor, an inorganic chromium active component precursor, an inorganic vanadium active component precursor and a catalyst modifying component that are supported on the surface of the porous inorganic carrier, and then activating same with an organometallic cocatalyst or a polymerization monomer, so as to obtain the supported three-center catalyst.

Vanadium phosphinic complex having general formula (I) or (II): V(X)M3P̂WFys-nMO V(X)3[(R3)2P(R4)P(R3)2] (ID wherein: X represents an anion selected from halogens such as, for example, chlorine, bromine, iodine, preferably chlorine; or is selected from the following groups: thiocyanate, isocyanate, sulfate, acid sulfate, phosphate, acid phosphate, carboxylate, dicarboxylate; Ri, identical or different among them, represent a hydrogen atom, or an allyl group (CH2=CH—CH2-); or are selected from alkyl groups CrC2o, preferably CrĈ, linear or branched, optionally halogenated, optionally substituted cycloalkyl groups; —n is an integer ranging from 0 to 3; R2, identical or different among them, are selected from optionally substituted aryl groups; R3, identical or different among them, represent a hydrogen atom, or an allyl group (CH2=CH—CH2-); or are selected from alkyl groups C1-C2o, preferably CrĈ, linear or branched, optionally halogenated, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R4 represents a group —NR5 wherein R5 represents a hydrogen atom, or is selected from C1-C20 alkyl groups, preferably CrC15, linear or branched; or R4 represents an alkylene group —(CH2) p- wherein p represents an integer ranging from 1 to 5; provided that in the general formula (I), in case n is equal to 1 and Ri is methyl, R2 is different from phenyl. Said phosphinic vanadium complex having general formula (I) or (II) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes.

The present invention relates to a supported hybrid vanadium-chromium-based catalyst, characterized in the catalyst is supported on a porous inorganic carrier and a V active site and a inorganic Cr active site are present on the porous inorganic carrier at the same time. The present invention further relates to a process for producing a supported hybrid vanadium-chromium-based catalyst. The invention also provides the preparation method of the catalyst, titanium or fluorine compounds, vanadium salt and chromium salt according to the proportion, different methods of sequence and load on the inorganic carrier, after high temperature roasting, still can further add organic metal catalyst promoter prereduction activation treatment on it. The catalyst of the present invention can be used for producing ethylene homopolymers and ethylene/α-olefin copolymers. The hybrid vanadium-chromium-based catalyst can have high activity and produce polyethylene polymers having the properties of broad molecular weight distribution (Part of the products are bimodal distribution) and excellent α-olefin copolymerization characteristic.

The present invention relates to a supported hybrid vanadium-chromium-based catalyst, characterized in the catalyst is supported on a porous inorganic carrier and a V active site and a inorganic Cr active site are present on the porous inorganic carrier at the same time. The present invention further relates to a process for producing a supported hybrid vanadium-chromium-based catalyst. The invention also provides the preparation method of the catalyst, titanium or fluorine compounds, vanadium salt and chromium salt according to the proportion, different methods of sequence and load on the inorganic carrier, after high temperature roasting, still can further add organic metal catalyst promoter prereduction activation treatment on it. The catalyst of the present invention can be used for producing ethylene homopolymers and ethylene/α-olefin copolymers. The hybrid vanadium-chromium-based catalyst can have high activity and produce polyethylene polymers having the properties of broad molecular weight distribution (Part of the products are bimodal distribution) and excellent α-olefin copolymerization characteristic.

An object of the present invention is to provide a coating agent giving a coating film that has good adhesion and stability over time, a decorative film having at least one layer formed from the coating agent; and an article decorated with the decorative film. The coating agent of the present invention contains, in a specific ratio, an olefin polymer (A) having a heat of fusion of in the range of 0 to 50 J/g and having a weight average molecular weight (Mw) as measured by GPC of 1×10.sup.4 to 1000×10.sup.4, a hydrocarbon-based synthetic oil (B) having a 40° C. kinematic viscosity of 30 to 500,000 cSt, and a tackifier (C) having an acid value of 10 or more and having a weight average molecular weight (Mw) of 0.9×10.sup.3 to 3×10.sup.3.

An object of the present invention is to provide a coating agent giving a coating film that has good adhesion and stability over time, a decorative film having at least one layer formed from the coating agent; and an article decorated with the decorative film. The coating agent of the present invention contains, in a specific ratio, an olefin polymer (A) having a heat of fusion of in the range of 0 to 50 J/g and having a weight average molecular weight (Mw) as measured by GPC of 1×10.sup.4 to 1000×10.sup.4, a hydrocarbon-based synthetic oil (B) having a 40° C. kinematic viscosity of 30 to 500,000 cSt, and a tackifier (C) having an acid value of 10 or more and having a weight average molecular weight (Mw) of 0.9×10.sup.3 to 3×10.sup.3.

Disclosed is an ethylene-α-olefin-nonconjugated polyene copolymer rubber satisfying the following requirements (A) and (B): (A) A proportion of a cyclohexane insoluble component at 25° C. is from 0.3% to 50% by mass with respect to a mass of the ethylene-α-olefin-nonconjugated polyene copolymer rubber; and (B) A tan δ ratio calculated by the following equation:

tan δ ratio=tan δ (100° C., 5 cpm)/tan δ (100° C., 1000 cpm)

is from 3.0 to 20. The tan δ (100° C., 5 cpm) and tan δ (100° C., 1000 cpm) are a loss tangent at 100° C. and a frequency of 5 cpm and a loss tangent at 100° C. and a frequency of 1000 cpm, respectively.

Disclosed is an ethylene-α-olefin-nonconjugated polyene copolymer rubber satisfying the following requirements (A) and (B): (A) A proportion of a cyclohexane insoluble component at 25° C. is from 0.3% to 50% by mass with respect to a mass of the ethylene-α-olefin-nonconjugated polyene copolymer rubber; and (B) A tan δ ratio calculated by the following equation:

tan δ ratio=tan δ (100° C., 5 cpm)/tan δ (100° C., 1000 cpm)

is from 3.0 to 20. The tan δ (100° C., 5 cpm) and tan δ (100° C., 1000 cpm) are a loss tangent at 100° C. and a frequency of 5 cpm and a loss tangent at 100° C. and a frequency of 1000 cpm, respectively.

Vanadium phosphinic complex having general formula (I) or (II):

V(X).sub.3[P(R.sub.1).sub.n(R.sub.2).sub.3-n].sub.2  (I)

V(X).sub.3[(R.sub.3).sub.2P(R.sub.4)P(R.sub.3).sub.2]  (II)

wherein: X represents an anion selected from halogens; or is selected from the following groups: thiocyanate, isocyanate, sulfate, acid sulfate, phosphate, acid phosphate, carboxylate, dicarboxylate; R.sub.1, identical or different among them, represent a hydrogen atom, or an allyl group (CH.sub.2═CH—CH.sub.2—); or are selected from alkyl groups C.sub.1-C.sub.20, linear or branched, optionally halogenated, optionally substituted cycloalkyl groups; n is an integer ranging from 0 to 3; R.sub.2, identical or different among them, are selected from optionally substituted aryl groups; R.sub.3, identical or different among them, represent a hydrogen atom, or an allyl group (CH.sub.2═CH—CH.sub.2—); or are selected from alkyl groups C.sub.1-C.sub.20, linear or branched, optionally halogenated, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R.sub.4 represents a group —NR.sub.5 wherein R.sub.5 represents a hydrogen atom, or is selected from C.sub.1-C.sub.20 alkyl groups, linear or branched; or R.sub.4 represents an alkylene group —(CH.sub.2)p- wherein p represents an integer ranging from 1 to 5;
provided that in the general formula (I), in case n is equal to 1 and R.sub.1 is methyl, R.sub.2 is different from phenyl.
Said phosphinic vanadium complex having general formula (I) or (II) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes.