Abstract:
PROBLEM TO BE SOLVED: To provide a polyolefin macromonomer consisting of a homopolymer or copolymer of various α-olefins and capable of also covering a wide molecular weight range and an efficient method for producing the macromonomer. SOLUTION: This new polyolefin macromonomer having acryloyl group or methacryloyl group at the terminal of a polyolefin chain is produced in a good efficiency by performing (i) a process of producing a polyolefin having hydroxy, vinyl or vinylidene group at the terminal of the polyolefin chain, and (ii) a process of converting the hydroxy, vinyl or vinylidene group at the terminal of the polyolefin chain to the acryloyl or methacryloyl group, one by one. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a polyolefin resin composition comprising a specific propylene polymer and a specific elastomer, and its use. SOLUTION: The polyolefin resin composition comprises a propylene polymer (A) and an elastomer (B-1), where the weight ratio of the elastomer (B-1) to the propylene polymer (A) is such that the elastomer (B-1) is at least 10 pts.wt. based on the 100 pts.wt. of the propylene polymer (A). The elastomer (B-1) (I) is a random copolymer of propylene and ethylene having a molar ratio of constituting units derived from propylene and ethylene, respectively, within the range of 80/20-20/80, (II) has an intrinsic viscosity [η] of at least 1.5 dl/g, (III) has a ratio of Mw to Mn (Mw/Mn) measured by GPC within the range of 1.0-3.5, and (IV) has a ratio of different kinds of bonds, resulting from 2,1-insertion of the propylene monomer, of at most 1.0 mole% determined by 13 C-NMR spectrum in the whole propylene constituting units. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a process for preparing a polar group-containing olefin copolymer which process is capable of giving an olefin copolymer with a high polymerization activity. SOLUTION: The process for preparing a polar group-containing olefin copolymer comprises a copolymerization of a 2-20C α-olefin and a polar group- containing monomer having a cyclic structure in the presence of a catalyst comprising (A) a compound of a transition metal selected from Groups 3 through 10 in the periodic table (Group 3 contains lanthanoids and actinoids) and (B) at least one kind of a compound selected from (B-1) an organic aluminiumoxy compound, (B-2) a compound which reacts with the above compound (A) to thereby form an ion pair and (B-3) an organic aluminum compound.
Abstract:
PROBLEM TO BE SOLVED: To obtain a modifier having excellent modification performances of any of impact resistance, heat resistance, weather resistance, scratch resistance, transparency, coating performances, adhesiveness, low-temperature flexibility, fluidity and dispersibility. SOLUTION: This modifier comprises an olefin-based block copolymer represented by general formula (I) PO-f-R... (I) (PO is a polyolefin segment comprising a repeating unit derived from a 2-20C olefin and having =500 weight-average molecular weight.
Abstract:
PROBLEM TO BE SOLVED: To provide a hot-melt adhesive composition having excellent heat- resistant adhesion and heat-resistant creep characteristics. SOLUTION: The hot-melt adhesive composition comprises (A) 90-10 pts.wt. olefin based block copolymer represented by the formula: PO-f-R (wherein PO is a polyolefin segment composed of a repeating unit to be derived from a 2-20C olefin and having a weight average molecular weight of >=2, 000; f is an ether bond, an ester bond or an amide bond; and R is a functional segment to be obtained by chain polymerization reaction and having a weight average molecular weight of >=500) and (B) 90-10 pts.wt. (A)+(B)=100 pts.wt.) tackifying resin.
Abstract:
PROBLEM TO BE SOLVED: To obtain a water-based resin dispersion capable of giving an adhesive exhibiting high bond strength and intended for bonding polyolefins. SOLUTION: This water-based resin dispersion is obtained by dispersing in water (A) an olefin-based block copolymer of the general formula (I): PO-f-R (PO is a polyolefin segment composed of recurring unit derived from a 2-20C olefin and having a weight-average molecular weight of >=2,000; f is an ether linkage, ester linkage or amido linkage; and R is a functional segment having come from chain polymerization reaction and comprising recurring unit >=500 in weight-average molecular weight) or (C) an olefin-based polymer composition comprising the component A and a thermoplastic resin B other than the component A.
Abstract:
PROBLEM TO BE SOLVED: To provide an electric and electronic part so that they may satisfy various requirements demanded for their applications. SOLUTION: The part comprises an olefin block copolymer (A) represented by formula (I); PO-f-R [wherein PO means a polyolefin segment having weight average molecular weight of 2,000 or more, which comprises repeated units derived from a 2-20C olefin; f means an ether bond, an ester bond or an amide bond ; R means a functional segment having weight average molecular weight of 500 or more obtained by chain polymerization reaction] or an olefin polymer composition (C) containing the copolymer (A) and a thermoplastic resin (B) other than copolymer (A).
Abstract:
PROBLEM TO BE SOLVED: To provide a production for building material and civil engineering so that it may satisfy various requirements demanded for their applications. SOLUTION: The production comprises an olefin block copolymer (A) represented by formula (I); PO-f-R [wherein PO means a polyolefin segment having weight average molecular weight of 2,000 or more, which comprises repeated units derived from a 2-20C olefin; f means an ether bond, an ester bond or an amide bond; R means a functional segment having weight average molecular weight of 500 or more obtained by chain polymerization reaction] or an olefin polymer composition (C) containing the copolymer (A) and a thermoplastic resin (B) other than copolymer (A).
Abstract:
PROBLEM TO BE SOLVED: To provide a method of producing an AB-type block polymer, capable of producing a polymer containing the AB-type block polymer in which two polyolefins having different constitutions from each other are mutually bonded chemically so that the polymer is highly actively produced in an industrial manner to attain a broad molecular weight distribution. SOLUTION: This method of producing the AB-type block polymer comprises polymerizing an olefin in the presence of a compound expressed by the general formula: PO-MR1R2 (PO is a polymer chain formed by singly polymerizing or coplymerizing a 2-10C α-olefin; M is a 13 group element; and R1 and R2 are each a H, a halogen or a 1-12C hydrocarbon residue, and the hydrocarbon residue may be crosslinked and may contain oxygen, nitrogen, or silicon atoms) so that a polymer chain having a different constitution from that of the PO segment in the general formula is formed from the above olefin.
Abstract:
PROBLEM TO BE SOLVED: To provide a polypropylene composition comprising a polypropylene and a propylene-1-butene random copolymer. SOLUTION: The polypropylene composition comprises 5-95 wt.% of polypropylene (PP-A) and 95-5 wt.% of propylene-1-butene random copolymer (PBR) which satisfies the following requirements (1)-(6), wherein the propylene-1-butene random copolymer comprises (1) 60-90 mol% of units derived from propylene and 10-40 mol% of units derived from 1-butene, and having (2) a triad isotacticity of ≥85% to ≤97.5%, (3) a molecular weight distribution (Mw/Mn) of 1-3, (4) an intrinsic viscosity of 0.1-12 dl/g, (5) a melting point (Tm) of 55-90°C, and satisfies (6) the relationship 146exp(-0.022M)≥Tm≥125exp(-0.032M) wherein Tm represents a melting point and M (mol%) represents a content of 1-butene constituent units. COPYRIGHT: (C)2011,JPO&INPIT