摘要:
Bis phenolate transition metal complexes are disclosed for use in alkene polymerization, with optional chain transfer agent, to produce polyolefins.
摘要:
The present disclosure is directed to a composition and articles containing the composition. The composition includes an ethylene-propylene-diene interpolymer (EPDM) having a rheology ratio greater than 33. The EPDM also has a molecular weight distribution greater than 3.0. The composition has a dissipation factor less than or equal to 0.01 radians as measured in accordance with ASTM D 150 (130° C., 60 Hz).
摘要翻译:本公开涉及含有该组合物的组合物和制品。 该组合物包含流变比大于33的乙烯 - 丙烯 - 二烯互聚物(EPDM)。该EPDM还具有大于3.0的分子量分布。 该组合物具有根据ASTM D 150(130℃,60Hz)测量的小于或等于0.01弧度的损耗因子。
摘要:
Bis phenolate transition metal complexes are disclosed for use in alkene polymerization, with optional chain transfer agent, to produce polyolefins.
摘要:
The present invention relates to an elastic terpolymer which can satisfy excellent processability and elasticity (flexibility) at the same time, and a preparation method thereof. The elastic terpolymer is a copolymer of 40 to 70 weight % of ethylene, 15 to 55 weight % of a C3-C20 alpha-olefin, and 0.5 to 20 weight % of a diene obtained in the presence of a group 4 transition metal catalyst, of which i) the weight average molecular weight measured by GPC is 100,000 to 500,000, and ii) Δ tan δ, the difference between the tan δ values at the angular frequencies of 0.2 rad/s and 100.0 rad/s, is 0.5 or less that is measured at 100° C. by using a rubber process analyzer.
摘要:
The present invention relates to a long-chain branched elastic terpolymer capable of satisfying excellent processability and elasticity (flexibility) at the same time, which is obtained in the presence of a Group IV transition metal catalyst, and a preparation method thereof. The elastic terpolymer is a copolymer of ethylene, an alpha-olefin having 3 to 20 carbon atoms, and a diene, wherein (i) its weight average molecular weight measured by GPC is 100,000 to 500,000, and (ii) x which is an ethylene content (% by weight) and y which is a crystallization temperature (K) of the copolymer measured when the ethylene content is X satisfy a relationship of 2.628x+100≦y≦2.628x+112.
摘要:
[Objective]Provided is a lump that is suitable to be used with rubber and compounding agents in producing rubber products with low hardness, of which an uniform kneaded product can be quickly obtained while kneading to produce rubber products, and that does not easily change its shape even when stored for a long period of time. [Solution] A lump includes 100 parts by mass of ethylene copolymer (X) which includes a structural unit derived from ethylene [A], a structural unit derived from α-olefin [B] having 3 to 20 carbon atoms, and a structural unit derived from at least one component [C] selected from the group consisting of (c-1) polyene and (c-2) cyclic olefin, and which satisfies (1) to (3) below, and 750 to 2,000 parts by mass of plasticizer (Y); wherein (1) the structural unit derived from ethylene [A] represents 50 to 90 mol % in 100 mol % of a total of the structural unit derived from component [A], the structural unit derived from component [B], and the structural unit derived from component [C] in copolymer (X), (2) the structural unit derived from component [C] represents 1.0 to 5.0 mol % in 100 mol % of a total of the structural unit derived from component [A], the structural unit derived from component [B], and the structural unit derived from component [C] in copolymer (X), and (3) an intrinsic viscosity [η] of ethylene copolymer (X) measured in a decalin solution of 135° C. is 7.8 to 13.0 dl/g.
摘要:
The present invention provides a process for manufacturing polyethylene-diene-copolymer conducted in a plant including at least one compressor unit, at least one preheater unit downstream of the compressor unit and at least one reactor, in particular a reactor, downstream of the compressor unit and the preheater unit. The process comprising the steps of (a) feeding a first feed stream comprising ethylene into the at least one compressor unit and subsequently into the at least one preheater unit, and (b1) feeding a second feed stream including at least one diene comonomer to the first feed stream leaving the at least preheater unit, and feeding the combined feed streams including ethylene and the at least one diene comonomer to the at least one reactor, and/or (b2) feeding a second feed stream including at least one diene comonomer to the at least one reactor at at least one location along the reactor.
摘要:
The present invention relates to an elastic terpolymer that can acquire good mechanical properties and elasticity (flexibility) at the same time, and a preparation method thereof. The elastic terpolymer, which is a copolymer comprising 40 to 70 wt % of ethylene, 20 to 50 wt % of a C3-C20 alpha-olefin, and 2 to 20 wt % of a diene as obtained in the presence of a catalyst comprising a vanadium compound, satisfies that: (i) the weight average molecular weight measured by GPC is 100,000 to 500,000; and (ii) in the monomer distribution of the copolymer determined by 13C NMR analysis, K given by a defined Equation 1 is 0.01 or less.
摘要翻译:本发明涉及能够同时获得良好的机械性能和弹性(弹性)的弹性三元共聚物及其制备方法。 弹性三元共聚物,其是包含40至70重量%的乙烯,20至50重量%的C 3 -C 20α-烯烃和2至20重量%的二烯的共聚物,所述共聚物在催化剂存在下获得,所述催化剂包含 钒化合物满足:(i)通过GPC测定的重均分子量为100,000〜500,000; 和(ii)在通过13 C NMR分析测定的共聚物的单体分布中,由定义的等式1给出的K为0.01以下。
摘要:
The invention describes a process for the production of EP(D)M in solution in a stirred reactor (CSTR) in which the reaction bath is kept in a boiling condition at a temperature of between 40 and 60° C. and at a pressure of between 0.6 and 1.3 MPa, and in which from 40% to 80% of the reaction heat is removed by boiling the reaction bath and the remaining reaction heat is removed by subcooling the fluids recycled to the reactor. The reactor is provided with a stirring system with three impellers, a device for distribution of the recycled fluids at the bottom of the reactor and a gamma ray level control device.
摘要:
The present invention relates to an elastic terpolymer which can satisfy excellent processability and elasticity (flexibility) at the same time, and a preparation method thereof. The elastic terpolymer is a copolymer of 40 to 70 weight % of ethylene, 15 to 55 weight % of a C3-C20 alpha-olefin, and 0.5 to 20 weight % of a diene obtained in the presence of a group 4 transition metal catalyst, of which i) the weight average molecular weight measured by GPC is 100,000 to 500,000, and ii) the Mooney viscosity (ML) and the Mooney relaxation area (MLR) measured by a Mooney viscometer (1+4+{circle around (a)}125° C.) can satisfy a specific relation.