Abstract:
A polymer characterized by having a melt tension (MT (g)) substantially equal to or lower than that of a polymer which is substantially equal in repeating units of the backbone and in molecular weight, molecular-weight distribution, and crystallinity and by having a flow activation energy (Ea (KJ/mol)) higher by at least 5 KJ/mol than the Ea value of that polymer. A preferred example of the polymer is one which comprises 50 to 100 mol% repeating units derived from ethylene and 0 to 50 mol% repeating units derived from an a-olefin having 3 to 20 carbon atoms, satisfies a specific relationship between flow activation energy (Ea (KJ/mol)) and a-olefin content (C (wt.%)), and satisfies a specific relationship between melt tension (MT (g)) and melt flow rate (MFR (g/10 min)). This branched polyolefin is excellent in moldability and mechanical strength.
Abstract:
Olefin block copolymers excellent in affinity with metal, polar resins or the like, impact resistance, mar resistance, thermal resistance, rigidity, oil resistance, transparency, antifogging properties, electrical insulation properties, breakdown voltage, application properties, low-temperature flexibility, moldability, environmental degradation properties, fluidity and/or dispersion properties; and processes for producing the block copolymers. The block copolymers are represented by the general formula (I): PO?1 - g1- B1¿ (wherein PO1 is a segment composed of repeating units derived from C¿2-20? olefin; g?1¿ is an ester, ether, amide, imide, urethane, urea, silyl ether, or carbonyl linkage; and B1 is an unsaturated hydrocarbon or heteroatom-containing segment).
Abstract:
The present invention is intended to provide a branched polyolefin having various excellent properties, a process for preparing the branched polyolefin and a thermoplastic resin composition containing the branched polyolefin. This branched polyolefin comprises an olefin chain (A) and olefin chain(s) (B) which have recurring units obtained from at least one olefin as main constituent units. In the branched polyolefin, the olefin chain (B) is linked to a position other than both ends of the olefin chain (A), and at least one olefin chain (B) per one olefin chain (A) is present. The process for preparing a branched polyolefin comprises allowing a functional group-containing polyolefin (C) having one or more carboxyl groups and/or acid anhydride groups at positions other than both ends to react with a terminal modified polyolefin (D) having a group capable of reacting with a carboxyl group or an acid anhydride group at only the position of chain end.
Abstract:
The present invention provides a propylene/1-butene random copolymer (PBR) having excellent flexibility, impact resistance, heat resistance and low-temperature heat-seal properties, a polypropylene composition containg the copolymer, a sheet, film or stretched film comprising the composition and a composite film having a layer of the composition. The propylene/1-butene random copolymer contains 60 to 90 mol% of propylene units and 10 to 40 mol% of 1-butene units and has a triad isotacticity of not less than 85% and not more than 97.5 %, a molecular weight distribution (Mw/Mn) of from 1 to 3, an intrinsic viscosity of from 0.1 to 12 dl/g, a melting point (Tm) of from 40 to 120°C, and satisfies the following relation wherein Tm represents a melting point and M (mol%) represents a content of 1-butene constituent units. The invention, further, provides a transition metal compound useful as an olefin polymerization catalyst and an olefin polymerization catalyst containing the transition metal compound. The transition metal compound is represented by the following formula (2a): wherein each of R 1 and R 3 is hydrogen, R 2 and R 4 are selected from a hydrocarbon group and silicon-containing group, R 5 to R 13 are selected from hydrogen, a hydrocarbon group and silicon-containing group, and adjacent substituent groups R 5 to R 12 may be linked to form a ring. R 14 is an aryl group, and R 13 and R 14 may be linked to form a ring. M is a Group 4 transition metal, Y is a carbon atom, Q is halogen, etc, and j is an integer of 1 to 4.
Abstract:
A novel graft polymer useful in various uses that has a polyolefin backbone having polyolefin segments excellent in moldability can be obtained by homopolymerizing a novel polyolefin macromonomer or polymerizing the novel polyolefin macromonomer in the coexistence of other olefins depending on need, wherein the macromonomer has at the terminal of its polyolefin chain a vinyl group whose ± -position may be substituted, and the macromonomer can be efficiently obtained by a method, for example, successively carrying out i) a step of producing a polyolefin having a hydroxyl group at the terminal of the polyolefin chain and ii) a step of converting the terminal hydroxyl group of the polyolefin chain into an acryloyl group, a methacryloyl group or a styryl group.
Abstract:
The present invention relates to olefinic compositions comprising a functionalized branched olefin copolymer containing functionalized sidechains derived from olefin and at least one chain end nucleophilic heteroatom containing functional group with at least one protic hydrogen, optionally with one or more copolymerizable monomers, the copolymer characterized by having A) a Tg 100° C.; C) an elongation at break of greater than or equal to 500 percent; D) a Tensile Strength of greater than or equal to 1,500 psi (10,300 kPa) at 25° C.; E) a TMA temperature>80° C., and F) an elastic recovery of greater than or equal to 50 percent.
Abstract:
The present invention is intended to provide a polar group-containing olefin copolymer having excellent adhesion properties to metals or polar resins and excellent compatibility therewith, a thermoplastic resin composition containing the copolymer, and uses thereof. The polar group-containing olefin copolymer comprises a constituent unit represented by the following formula (1) and a constituent unit represented by the following formula (4), and optionally a constituent unit represented by the following formula (5), having a molecular weight distribution (Mw/Mn) of not more than 3, and having an intensity ratio of T±² to T±± (T±²/T±±), as determined from a 13 C-NMR spectrum of said copolymer, of not more than 1.0: wherein R 1 is a hydrogen atom or a straight-chain or branched aliphatic hydrocarbon group of 1 to 18 carbon atoms; R 5 is a hydrocarbon group; R 6 is a hetero atom or a group containing a hetero atom; r is 0 or 1; Z is a polymer segment obtained by any one of anionic polymerization, ring-opening polymerization and polycondensation; W is a hydroxyl group or an epoxy group; p is an integer of 1 to 3, q is 0, 1 or 2, and p+q ‰ 3; when p is 2 or 3, each -O-Z may be the same or different, and in this case, if r is 0, -O-Z may be bonded to the same or different atom of R 5 , and if r is 1, -O-Z may be bonded to the same or different atom of R 6 ; when q is 2, each W may be the same or different, and in this case, if r is 0, W may be bonded to the same or different atom of R 5 , and if r is 1, W may be bonded to the same or different atom of R 6 ; in case of p‰¥1 and q‰¥1, if r is 0, W and -O-Z may be bonded to the same or different atom of R 5 , and if r is 1, W and -O-Z may be bonded to the same or different atom of R 6 ; m is 0 or 1; n is an integer of 1 to 3; and when n is 2 or 3, each W may be the same or different, and in this case, if m is 0, W may be bonded to the same or different atom of R 6 , and if m is 1, W may be bonded to the same or different atom of R 7 . The polar group-containing olefin copolymer and the thermoplastic resin composition containing the copolymer are used for films, sheets, modifiers, building/civil engineering materials, automobile exterior trim, electric/electronic parts, coating bases, compatibilizing agents, etc.
Abstract:
A branched olefin copolymer comprises a branched building block containing polar functional groups and formed by radical polymerization reaction or anion polymerization reaction. A branched olefin copolymer comprises a building block A of formula (1) and a building block B of formula (2). -CH 2-CH(R 1>)- (1) [Image] R 1>H or 1-18C linear or branched aliphatic hydrocarbon; R 2>linear or branched aliphatic or aromatic hydrocarbon; F : heteroatom or heteroatom-containing linking group; Z : polymer segment containing O, N, halo, or aryl and having a molecular weight distribution of 1.0-3.0; W : alcoholic hydroxyl, phenolic hydroxyl, carboxylic acid, carboxylate, acid anhydride, amino, epoxy, siloxy, or mercapto; n : 1-3; m : 0-2. When n is 2 or 3, Z may be the same or different to each other. When m is 2, W may be the same or different to each other. W may be bound to the same or different atom of R 2>to form a cyclic structure. An independent claim is also included for a process for producing the branched olefin copolymer by sequentially conducting a step of synthesizing a polar group-containing olefin copolymer Q containing functional group G, preferably hydroxyl, carboxylic acid, ester, amino, epoxy, silanol, or acid anhydride; a step of converting the functional group G into a group having an ability to initiate radical polymerization; and a step of installing a polymer segment Z in the building block B in the branched olefin copolymer by radical polymerization of a monomer comprising a carbon-carbon double bond-containing compound R containing oxygen, nitrogen, halo or aryl.
Abstract:
A branched olefin copolymer comprises a branched building block containing polar functional groups and formed by radical polymerization reaction or anion polymerization reaction. A branched olefin copolymer comprises a building block A of formula (1) and a building block B of formula (2). -CH 2-CH(R 1>)- (1) [Image] R 1>H or 1-18C linear or branched aliphatic hydrocarbon; R 2>linear or branched aliphatic or aromatic hydrocarbon; F : heteroatom or heteroatom-containing linking group; Z : polymer segment containing O, N, halo, or aryl and having a molecular weight distribution of 1.0-3.0; W : alcoholic hydroxyl, phenolic hydroxyl, carboxylic acid, carboxylate, acid anhydride, amino, epoxy, siloxy, or mercapto; n : 1-3; m : 0-2. When n is 2 or 3, Z may be the same or different to each other. When m is 2, W may be the same or different to each other. W may be bound to the same or different atom of R 2>to form a cyclic structure. An independent claim is also included for a process for producing the branched olefin copolymer by sequentially conducting a step of synthesizing a polar group-containing olefin copolymer Q containing functional group G, preferably hydroxyl, carboxylic acid, ester, amino, epoxy, silanol, or acid anhydride; a step of converting the functional group G into a group having an ability to initiate radical polymerization; and a step of installing a polymer segment Z in the building block B in the branched olefin copolymer by radical polymerization of a monomer comprising a carbon-carbon double bond-containing compound R containing oxygen, nitrogen, halo or aryl.
Abstract:
The present invention relates to olefinic compositions comprising a functionalized branched olefin copolymer containing functionalized sidechains derived from olefin and at least one chain end nucleophilic heteroatom containing functional group with at least one protic hydrogen, optionally with one or more copolymerizable monomers, the copolymer characterized by having A) a Tg 100° C.; C) an elongation at break of greater than or equal to 500 percent; D) a Tensile Strength of greater than or equal to 1,500 psi (10,300 kPa) at 25° C.; E) a TMA temperature>80° C., and F) an elastic recovery of greater than or equal to 50 percent.