Abstract:
There are disclosed a styrenic copolymer which comprises at least one structural unit represented by the general formula (I) ##STR1## and a structural unit represented by the general formula (II) ##STR2## or a structural unit represented by the general formula (IX) ##STR3## wherein the symbols are each as previously defined in the specification, the structural unit (II) or (IX) being contained in an amount of 0.01 to 99.9 mol %; and a process for the production of the above copolymer.The above styrenic copolymer has a high degree of syndiotactic configuration in the stereoregularity of the main chain of the structural unit (I) as well as adhesivity and compatibility with a resin of a different type.
Abstract:
According to the present invention, an aqueous dispersion containing a graft copolymer satisfying (a) to (e) shown below and water is provided, and it is an aqueous dispersion containing a graft copolymer which shows an excellent dispersibility even in a state of reducing a surfactant and which is excellent in an affinity with a binder resin, a pigment and the like:(a) a graft rate is 1 to 150% by mass, (b) a weight average molecular weight measured by GPC is 500 to 400000, (c) a molecular weight distribution (Mw/Mn) is 1.5 to 4, (d) a main chain is a polymerization chain containing a monomer unit having a hydrophilic group and (e) a side chain is a homopolymerization chain of a single kind or a copolymerization chain of two or more kinds selected from α-olefins having 3 to 28 carbon atoms or a copolymerization chain comprising an α-olefin unit having 3 to 28 carbon atoms and an ethylene unit which accounts for 50% by mass or less, wherein a mesopentad ratio [mmmm] of the polymerization chain is 30 to 80 mole %.
Abstract:
The present invention provides a polyolefin-based resin composition, comprising (A) a polyolefin I produced from at least one monomer selected from the group consisting of α-olefins, cyclic olefins and styrenes; (B) a polyolefin II produced from said at least one monomer, which differs in composition or properties from said polyolefin I; and (C) a graft copolymer produced by bonding said polyolefins I and II to each other through a polyene, wherein (a) a ratio [(1/R1)/(1/R1)0] of a relaxation velocity (1/R1) of a long-term relaxation component measured by a solid 1H-NMR method about the composition to a relaxation velocity (1/R1)0 of a long-term relaxation component measured by a solid 1H-NMR method about a resin mixture of only the components (A) and (B) is 1.01 or higher; and (b) an intrinsic viscosity [η] of the composition is in the range of 0.1 to 10 deciliter/g as measured in decalin at 135° C. The resin composition is readily controlled in property-determining factors such as morphology and interfacial strength, and is capable of providing a composite material composed of polyolefin-based resins according to properties as required.
Abstract translation:本发明提供了一种聚烯烃类树脂组合物,其包含(A)由选自由α-烯烃,环状烯烃和苯乙烯组成的组中的至少一种单体制备的聚烯烃I; (B)由所述至少一种单体制备的聚烯烃II,其组成或性质与所述聚烯烃I的不同; 和(C)通过多烯结合所述聚烯烃I和II彼此制备的接枝共聚物,其中(a)[(1 / R 1)/(1 / 通过固体1 SUP测量的长期松弛组分的松弛速度(1 / R 1 1)的松弛速度(1 / R 1) 关于通过固体1测量的长期松弛组分的组成与松弛速度(1 / R 1/2)0> 1的1 H-NMR方法, 只有组分(A)和(B)的树脂混合物的1 H-NMR方法为1.01以上; 和(b)组合物的特性粘度η在135℃萘烷中测定的范围为0.1-10分升/克。树脂组合物容易控制在诸如形态和界面强度的性质决定因素 并且能够根据需要提供由聚烯烃系树脂构成的复合材料。
Abstract:
The polyolefin-based resin composition (I) of the present invention comprises (A) 99.9 to 80% by mass of a propylene (co)polymer having (a) a melt flow rate (MFR) of 0.1 to 200 g/10 min, (b) a meso-pentad fraction [mmmm] of an ordinary temperature (25° C.) xylene-insoluble component of 97.0% or higher, and (c) a content of an ordinary temperature (25° C.) xylene-soluble component of 4 to 50% by mass; and (B) 0.1 to 20% by mass of a copolymer containing propylene chains of an isotactic structure, and copolymer chains constituted from at least two monomer units selected from the group consisting of ethylene, C3 to C20 α-olefins, cyclic olefins and aromatic vinyl monomers which are graft-bonded and/or block-bonded to said copolymer, and exhibits not only a high rigidity but also a highly enhanced impact strength and is well-balanced between the physical properties thereof.
Abstract:
Long-chain, branched, propylene-based polymers, of which the melt index and the molecular weight distribution and the melt tension and the limiting viscosity both satisfy specific requirements, have good physical properties that are comparable to or better than those of conventional propylene-based polymers. They have good melt workability and are favorable to large-size blow molding and extrusion foaming. They are favorably used as miscibility improvers for propylene homopolymers and propylene-based copolymers.
Abstract:
Ethylene copolymers are disclosed herein which are each derived from ethylene and an olefin of C.sub.3 to C.sub.20 and in which any quaternary carbon atom is not present in a polymeric main chain; the activation energy (Ea) of melt flow is in the range of 8 to 20 kcal/mol; and (1) a ratio between a Huggins coefficient (k.sup.1) of the copolymer and a Huggins coefficient (k.sup.2) of a straight-chain ethylene polymer having the same intrinsic viscosity meets the equation 1.12 0.5+0.125.times.log Mw. These ethylene copolymers are different from a usual HDPE, L-LDPE and LDPE, and they are characterized in that working properties are excellent, and physical properties such as density, melting point and crystallinity can be controlled.
Abstract:
There are disclosed a styrenic block copolymer having a reduced viscosity of 0.01 to 20 dl/g (0.05 g/l in 1,2,4-trichlorobenzene at 135.degree. C.) which comprises highly syndiotactic styrenic-polymer segments and 10.sup.-4 to 10 mol % of heteroatom-containing styrenic polymer segments; a resin composition comprising the above styrenic block copolymer and a thermoplastic resin, an inorganic filler or an organic filler; a multi-layer material comprising at least one layer composed of the above styrenic block copolymer or the above resin composition; and a process for producing the above styrenic block copolymer which comprises polymerizing a styrenic monomer in the presence of a specific catalyst and adding a heteroatom-containing styrenic monomer to successively proceed with copolymerization reaction. The above-disclosed styrenic block copolymer and the resin composition exhibit excellent compatibility and adhesivenesss, and the multi-layer material is expected to find a wide range of applications in automobile parts, electrical and electronic parts as well as film, sheet, etc.
Abstract:
There are disclosed a graft copolymer formed by grafting a styrenic monomer onto a high polymer having double bonds in the side chain to constitute highly syndiotactic polystyrenic chain as the graft component, the graft copolymer having a content of graft component of 0.005 to 99% by weight and a reduced viscosity of 0.01 to 30 dl/g as measured at a concentration of 0.05 g/dl in 1,2,4-trichlorobenzene at 135.degree. C. or a melt index of 0.001 to 500 g/10 minutes as measured at 300.degree. C. under a load of 2.16 kg; a process for efficiently producing the above graft copolymer using a catalyst comprising specific components; and a resin composition comprising the above graft copolymer, a highly syndiotactic styrenic polymer or other thermoplastic resin and, when necessary, an inorganic or organic filler. The above graft copolymer and resin composition are excellent in resistance to heat and chemicals, electrical properties, moldability, compatibility, impact resistance, etc.
Abstract:
There is provided a process for producing a styrenic graft copolymer which comprises coplymerizing a styrenic monomer and a styrenic monomer having a hydrocarbon radical with an unsaturated bond in the presence of a catalyst comprising as primary ingredient (A) a transition metal compound and (B) a contact product of an organoaluminum compound and a condensation agent or (C) a compound which produces an ionic complex by reacting with the above-mentioned transition metal compound and subsequently graft polymerizing an ethylenically unsaturated monomer onto the resultant styrenic copolymer.The above-described styrenic graft copolymer is greatly improved in terms of compatibility, adhesivity, coatability and wettability while preserving heat resistance and chemical resistance thereof, and thus effective as a variety of constructional materials and compatibilizing agents. Furthermore, the composition or multi-layer material comprising the above-mentioned styrenic graft copolymer is widely utilized in a variety of application field including film, sheet, especially stampable sheet, container, packaging material, automobile parts, electrical and electronic parts, etc.
Abstract:
An ionomer resin having a weight-average molecular weight of at least 5,000 and containing three specific repeating units as the primary components, said units being arranged randomly and linearly with the total proportion of the two units being 0.001 to 45 mol %, is obtained by copolymerizing ethylene with an unsaturated carboxylic acid in the presence of a Lewis acid, using as a catalyst a chromium compound and a compound of a metal of Groups I to V in the periodic table and permitting a compound of a metal of Group I, II, III, IVA or VIII in the periodic table to react with the resulting copolymer. When an unsaturated carboxylic ester is used, the resulting copolymer is hydrolyzed or thermally decomposed.