74 results about "Conjugated polyene" patented technology

To obtain a copolymer which has a high crosslinking rate and excellent productivity and can form a molded product with thermal aging resistance, small compression set at high and low temperatures, and improved low-temperature characteristics (low-temperature elastic recovery characteristics and Gehman torsion characteristics), a composition containing the copolymer, and the like.SOLUTION: An ethylene / α-olefin / nonconjugated polyene copolymer (A) has a structural unit derived from ethylene [A1], a structural unit derived from a C4-20 α-olefin [A2], and a structural unit derived from a nonconjugated polyene [A3] having two or more partial structures selected from the group consisting of the following general formulae (I) and (II) in total in one molecule and satisfies specific requirements. The structural unit derived from the [A2] contains a structural unit derived from 1-butene, and the structural unit derived from the [A3] contains a structural unit derived from 5-vinyl-2-norbornene.SELECTED DRAWING: None

The invention provides positive electrode lithium supplementing slurry and a preparation method thereof, a positive plate and a lithium ion battery, and relates to the technical field of lithium ion batteries. According to the positive electrode lithium supplementing slurry, on the basis of existing positive electrode homogenate, acidic additives such as organic weak acids with mild acidity, such as benzenetricarboxylic acid, phthalic acid and benzoic acid are introduced to neutralize alkaline substances in a lithium supplementing material, so that dehydrogenation and fluorine reactions of PVDF are inhibited; furthermore, hydroquinone is added into the positive electrode lithium supplementing slurry as a free radical quenching agent and is used for eliminating free radicals at-CH = CF-fractures, so that recombination reaction is prevented, and cross-linked conjugated polyene is prevented from being formed; by utilizing the synergistic effect of the organic weak acid and the free radical quenching agent, the dispersity and stability of the slurry are improved, the processing quality of the positive pole piece is improved, the electrochemical performance of the lithium ion battery is improved, and meanwhile, the service life of equipment is not influenced.

The present disclosure provides a process. In an embodiment, the process includes providing a neat ethylene / propy-lene / non-conjugated polyene terpolymer (n-terpolymer) having a Mooney viscosity (ML (1+4) at 125C) less than 100 Mooney units (MU). The process includes exposing the n-terpolymer to electron beam radiation at a dosage from 0.2 megaRad (MRad) to 1.3 MRad. The process includes forming a branched ethylene / propylene / non-conjugated polyene terpolymer (b-terpolymer) having a Mooney viscosity ML (1+4) at 125C from 25 MU to 135 MU.

Disclosed are a binder for forming a solid electrolyte film, which includes a copolymer including structural units derived from a non-polar aromatic vinyl-based first monomer, an aliphatic conjugated diene-based second monomer, and a conjugated polyene-based third monomer, a film-type structure for a secondary battery including the same, and a secondary battery including the film-type structure.

To provide an ethylene-based copolymer composition which can improve productivity by improving adhesiveness to a layer containing a fiber material, has excellent adhesiveness to a layer containing a fiber material and can maintain the mechanical properties of the resulting laminate.SOLUTION: There is provided an ethylene-based copolymer composition which comprises an ethylene / α-olefin / nonconjugated polyene copolymer (L) containing ethylene [A], an α-olefin having 4 to 20 carbon atoms [B] and a nonconjugated polyene [C] and satisfying specific requirements and a modified polybutadiene [N], and contains more than 10 pts.mass and 20 pts.mass or less of an antioxidant based on 100 pts.mass of the copolymer (L).SELECTED DRAWING: None

To provide an ethylene-based copolymer composition that is suitable for automotive aqueous hose applications and is capable of yielding molded products having a superior balance of insulation performance, coolant resistance, and thermal aging resistance in comparison with traditional EPDM-based rubber compositions for automotive aqueous hoses, and also to provide a hose product having a superior balance of insulation performance, coolant resistance, and thermal aging resistance.SOLUTION: An ethylene-based copolymer composition comprises: an ethylene-α-olefin-non-conjugated polyene copolymer (A) comprising structural units derived from ethylene (a1), structural units derived from an α-olefin (a2) having 3 to 20 carbon atoms, and structural units derived from a non-conjugated polyene (a3) having two or more partial structures in one molecule selected from the group consisting of the following general formulas (I) and (II), where the structural units derived from the non-conjugated polyene (a3) include structural units derived from 5-vinyl-2-norbornene; and a carbodiimide group-containing compound (B).SELECTED DRAWING: None

To provide a copolymer composition containing an ethylene / α - olefin / non-conjugated polyene copolymer which is excellent in physical properties, processability and the like of a molded article to be obtained, a method for producing the same, a foamed molded article obtained from the copolymer composition and a method for producing the same, and a crosslinked molded article and a method for producing the same.SOLUTION: A copolymer composition containing a copolymer (S) having a structural unit derived from ethylene (A), a structural unit derived from an α - olefin (B) having 3 to 20 carbon atoms, and a structural unit derived from a specific non-conjugated polyene (C) and satisfying requirements (i) and (ii), a hydrosilyl group-containing compound (Y) that is an organohydrogenpolysiloxane having at least one silicon atom-bonded aralkyl group and at least two silicon atom-bonded hydrogen atoms in a molecule, and a platinum-based catalyst for hydrosilyl crosslinking.SELECTED DRAWING: None

To provide a thermoplastic elastomer composition excellent in moldability.SOLUTION: (A) an ethylene-propylene-nonconjugated polyene copolymerized elastomer, (B) a polypropylene, (C) a hydrogenated product of a block polymer of an aromatic vinyl compound and a conjugated diene compound, and (E) a phenolic resin crosslinking agent, wherein the polypropylene (B) comprises a (0g) polypropylene having a melt mass flow rate of 0.1 to 3 B1 / 10 minutes and a (0g) polypropylene having a melt mass flow rate of more than 3 100g / 10 minutes and not more than B2 / 10 minutes. Preferably, the composition further contains (D) a non-aromatic rubber softener and (F) talc.SELECTED DRAWING: Figure 2

Provided is a copolymer rubber composition from which a crosslinked molded article having well-balanced and excellent properties in terms of low hardness, small compression set at low temperatures, and high abrasion resistance can be obtained. [Solution] The copolymer composition comprises 100 parts by mass of an ethylene-α-olefin-non-conjugated polyene copolymer (P) having structural units derived from ethylene [A1], structural units derived from an α-olefin [A2] having 4 to 20 carbon atoms, and structural units derived from a non-conjugated polyene [A3], wherein the [A2] contains 1-butene, and satisfies the following (1) and (2): (1) the ratio [[e] / [x]] of the molar fraction [e] of the structural units derived from ethylene [A1] to the molar fraction [x] of the structural units derived from the α-olefin [A2] having 4 to 20 carbon atoms is 40 / 60 to 90 / 10; and (2) the intrinsic viscosity [η] measured in decalin at 135°C is 5.0 to 7.0 dl / g.

The present invention provides a composition containing an ethylene-α-olefin-nonconjugated polyene copolymer, a hydrosilyl group-containing compound, a platinum-based catalyst, and a zeolite, which has a high crosslinking rate. [Solution] A composition containing a specific ethylene-α-olefin-non-conjugated polyene copolymer (A), a specific hydrosilyl group-containing compound (Y), a platinum-based catalyst, and a zeolite.

To provide a copolymer composition capable of obtaining a molded article excellent in balance of water absorption, surface roughness and compression set.SOLUTION: A copolymer (S) having a structural unit derived from ethylene (A), a structural unit derived from an α - olefin having 3 to 20 carbon atoms (B), and a structural unit derived from a non-conjugated polyene (C), a hydrosilyl group-containing compound (Y) represented by the formula (a) which is an organohydrogenpolysiloxane having at least one silicon-bonded aralkyl group and at least two silicon-bonded hydrogen atoms in a molecule, a platinum-based catalyst, a reaction inhibitor, carbon black, a sodium bicarbonate-based foaming agent (F1), and a microcapsule-based foaming agent (F2); To provide a copolymer composition, a crosslinked molded product of the composition, and a weather strip sponge.SELECTED DRAWING: None

Provided is a vibration-damping rubber composition that is excellent in processability and vibration-damping properties in a low-temperature atmosphere. [Solution] A vibration-damping rubber composition comprising an ethylene-α-olefin-non-conjugated polyene copolymer (A) having structural units derived from ethylene [A1], structural units derived from an α-olefin [A2] having 4 to 20 carbon atoms, and structural units derived from a non-conjugated polyene [A3], wherein the α-olefin [A2] having 4 to 20 carbon atoms contains 1-butene, and satisfying the following requirements (1) and (2): requirement (1) the ratio [[e] / [x]] of the molar fraction [e] of the structural units derived from ethylene [A1] to the molar fraction [x] of the structural units derived from the α-olefin [A2] having 4 to 20 carbon atoms is 40 / 60 to 90 / 10; and requirement (2) the intrinsic viscosity [η] measured in decalin at 135°C is 5.0 to 7.0 dl / g.

A composition comprising at least the following components: a) at least one ethylene / alpha-olefin / non-conjugated polyene interpolymer comprising a Mooney Viscosity (ML 1+4, 125° C.) from 10 to 40, and b) at least one ethylene / alpha-olefin interpolymer comprising a melt viscosity (177° C.)≤50,000 mPa·s; and wherein the composition has a Mooney Viscosity (ML 1+4, 100° C.) a from 6.0 to 10.

An object of the present invention is to obtain an ethylene / α-olefin / non-conjugated polyene copolymer that is applicable to LIM molding or a wide variety of other molding methods and is suitable for obtaining a molded body excellent in mechanical strength.The present invention relates to an ethylene / α-olefin / 5-vinyl-2-norbornene copolymer satisfying the following requirements (i) to (vi): (i) a weight average molecular weight is in a range of 1,000 to 50,000; (ii) a molecular weight distribution (Mw / Mn, Mw: weight average molecular weight, Mn: number average molecular weight) measured by gel permeation chromatography (GPC) is 2.7 or less; (iii) an intensity ratio Tαβ / Tαα in the 13C-NMR spectrum is 0.0 to 0.1; (iv) a content of a constitutional unit derived from 5-vinyl-2-norbornene is in a range of 0.1 to 20.0% by mass; (v) the constitutional unit derived from 5-vinyl-2-norbornene contains an endo form structure and an exo form structure, and a ratio of endo form structure / exo form structure is 2.5 or less; and (vi) an intrinsic viscosity [η] measured in decahydronaphthalene at 135° C. is in a range of 0.01 to 0.8 dl / g.

This invention achieves a series of compact small-molecule organic dyes with emission wavelengths ranging from the visible light window to the second near-infrared window through a rational strategy of balancing the molecular weight and emission wavelength of the dyes. These dyes exhibit good versatility and excellent blood-brain barrier crossing ability. This invention creatively selects low-molecular-weight flexible conjugated polyene chains as π-electron bridges, which effectively expands the π-conjugated system while maintaining the small molecular weight of the dyes. Furthermore, by extending the π-conjugated structure through conjugated polyene chains to enhance the ICT effect, a redshift in emission wavelength can be achieved while maintaining a small molecular weight. Therefore, based on the p-hydroxybenzylidene-imidazolinone chromophore, this invention integrates molecular design strategies to synergistically enhance the ICT effect, constructing a series of small-molecular-weight fluorescent dyes with D-π-A1 or D-π-A1-π-A2 structures, with wavelengths reaching up to 1200 nm or higher. This ensures the blood-brain barrier permeability of the dyes as probes, enabling their application in in vivo in situ brain imaging.

A composition comprising the following: a) a first ethylene / alpha-olefin / non-conjugated polyene interpolymer that has a Mooney Viscosity ≥50; b) a second ethylene / alpha-olefin / non-conjugated polyene interpolymer that has a Mooney Viscosity <50; c) a calcined filler formed from a filler composition comprising a kaolinite.

To provide a copolymer composition which has a high crosslinking rate, is excellent in productivity and processability, and gives a crosslinked molded article excellent in physical properties (for example, hardness, tensile stress at break, tensile elongation at break, and compression set).SOLUTION: A polymer (0dL) having an intrinsic viscosity [η] (in decalin at 135 °C.) of 2. 0dL / g or more and less than 4. S1 / g, a polymer (S2) having an intrinsic viscosity [η] (in decalin at 135 °C.) of 0. 5dL / g or more and less than 2. 0dL / g, a specific hydrosilyl group-containing compound (Y), S2, each of the copolymers (S1) and (S2) has a structural unit derived from ethylene (A), a structural unit derived from an α - olefin (B) having 3 to 20 carbon atoms, and a structural unit derived from a non-conjugated polyene (C).SELECTED DRAWING: None

To provide a laminate excellent in adhesiveness between a layer composed of an ethylenic copolymer composition and a layer containing a fiber material.SOLUTION: In the laminate, a layer [I] composed of an ethylenic copolymer composition and a layer [II] containing a fiber material are in contact with each other, the ethylenic copolymer composition containing: an ethylene / α-olefin / 5-vinyl-2-norbornene copolymer (P) which satisfies specific requirements; and an ethylene / α-olefin / nonconjugated polyene copolymer (Q) which is a copolymer other than the copolymer (P), satisfies specific requirements, and contains ethylene [A], a C4-20 α-olefin [B], and a nonconjugated polyene [C].SELECTED DRAWING: None

An object of the present invention is to obtain an ethylene-based copolymer composition which can improve productivity by improving tackiness with a layer containing a fiber material, is excellent in adhesiveness with a layer containing a fiber material, and can maintain mechanical properties of a laminate to be obtained.SOLUTION: An ethylene-based copolymer composition contains a specific ethylene / α - olefin / non-conjugated polyene copolymer (L) containing a structural unit derived from ethylene [A], a structural unit derived from an α - olefin [B] having 4 to 20 carbon atoms, and a structural unit derived from a non-conjugated polyene [C] containing a total of two or more partial structures selected from the group consisting of the following general formulae (I) and (II) in a molecule, a trans-polyoctenylene (M), and a crosslinking aid (N) that is an unsaturated carboxylic acid metal salt.SELECTED DRAWING: None

The application discloses a polyvinyl alcohol qualitative identification method based on Py-GC / MS, and belongs to the technical field of analysis and detection, which comprises the following steps: (1) placing a sample to be tested in a cracker, pyrolyzing under the protection of an inert atmosphere at a high temperature of 300-600 DEG C, introducing pyrolysis products into a gas chromatograph-mass spectrometer for analysis to obtain a TIC graph; (2) if polyvinyl alcohol characteristic pyrolysis components including methyl conjugated polyene aldehyde are all identified in the TIC graph, it is indicated that the sample to be tested contains polyvinyl alcohol. The application does not need a sample pretreatment step, can quickly realize accurate qualitative identification of polyvinyl alcohol in the sample, and can provide significant characteristic pyrolysis components and basis for accurately identifying polyvinyl alcohol by using a pyrolysis method, such as octa-2, 4, 6-triene aldehyde and other methyl conjugated polyene aldehydes.

A composition comprising a rheology modified ethylene / alpha-olefin / nonconjugated polyene interpolymer" that comprises the following properties: i) a MLRA / ML (at 125°C) value ≥ 8.0 s, and ii) gel content ≤ 10.0 wt%, based on the weight of the "rheology modified ethylene / alpha-olefin / nonconjugated polyene interpolymer;" and wherein the "rheology modified ethylene / alpha-olefin / nonconjugated polyene interpolymer" is formed from a first composition comprising the following components: a) an ethylene / alpha-olefin / nonconjugated polyene interpolymer and b) at least one sulfur source.

The present disclosure provides a composition. In an embodiment, a crosslinkable polymer composition is provided and includes an ethylene / propylene / non-conjugated polyene terpolymer, a free radical initiator, and 2,2,6,6-tetramethyl-4-piperidyl methacrylate disulfide (BiTEMPS). The present disclosure also provides an article composed of the crosslinkable polymer composition. The article includes a crosslinked composition composed of the ethylene / propylene / non-conjugated polyene terpolymer, and 2,2,6,6-tetramethyl-4-piperidyl methacrylate disulfide (BiTEMPS).

To provide a thermoplastic elastomer composition exhibiting superior flowability over a broad temperature range and achieving reduced odor when molded.SOLUTION: A thermoplastic elastomer composition according to the present invention is a composition produced through melt-kneading of an ethylene-α-olefin-non-conjugated polyene copolymer rubber (A), which is a copolymer of ethylene, a C3-20 α-olefin, and a non-conjugated polyene, a polyolefin resin (B), and a mineral oil-based softener (C), in the presence of a crosslinker (D). The thermoplastic elastomer composition contains a deodorant (F).SELECTED DRAWING: None

A thermoplastic elastomer composition: 41 to 70 parts by mass of component (A), 0 to 54 parts by mass of component (B), and 5 to 59 parts by mass of component (C) ((A), (B), and (C) being 100 parts by mass), with dynamic heat treatment with a cross-linking agent. Component (A): a propylene block copolymer having a melt flow rate measured in accordance with ISO 1133. Component (B): an ethylene / α-olefin / non-conjugated polyene copolymer including a structural unit derived from ethylene, a structural unit derived from an α-olefin having 3 to 20 carbon atoms, and a structural unit derived from a non-conjugated polyene. Component (C): an ethylene / α-olefin copolymer including a structural unit derived from ethylene and a structural unit derived from an α-olefin having 4 to 20 carbon atoms and having a melt flow rate measured in accordance with ISO 1133.

The invention belongs to the technical field of polysubstituted olefin synthesis methods, and particularly relates to a synthesis method of polysubstituted conjugated diene and conjugated triene, which is characterized in that under relatively mild conditions, simple transition metal salt is adopted as a catalyst, and polysubstituted conjugated diene and conjugated triene compounds are prepared from a simple raw material alkyl amide; the product obtained by the invention is brand new and is not reported; the two-step alkenylation reaction can be realized through a'one-pot method '; the synthesis method is simple to operate, mild in reaction condition, high in reaction yield, wide in application range and very good in economic value, the polysubstituted conjugated polyene compound is synthesized by adopting multiple C-H functionalization reactions in the synthesis method, the operation is simple and effective, the synthesis raw materials are economical and easy to obtain, and the synthesis method is suitable for industrial production. The method is suitable for high-selectivity preparation of polysubstituted olefins, has a wide application prospect, and is an effective supplement of the existing method in the aspect of preparation methods.

One embodiment of the present invention relates to a thermoplastic elastomer composition or a shaped article thereof. The thermoplastic elastomer composition is a composition including 100 parts by mass of an ethylene / α-olefin / non-conjugated polyene copolymer (A); 20 to 80 parts by mass of a propylene polymer (B) having a melt flow rate (measured at 230° C. under 2.16 kg load in accordance with ASTM D 1238-65T) of 1 to 100 g / 10 min; and 0.1 to 50 parts by mass of an inorganic filler (C); or is a composition obtained by dynamically crosslinking 100 parts by mass of an ethylene / α-olefin / non-conjugated polyene copolymer (A); 20 to 80 parts by mass of the propylene polymer (B); 0.1 to 50 parts by mass of an inorganic filler (C); and a crosslinking agent (D).

The molecular weight and the emission wavelength of the dye are balanced through a reasonable strategy, a series of compact organic small molecule dyes with the emission wavelength from a visible light window to a second near-infrared window are obtained, the universality is good, and the good blood brain barrier crossing capacity is achieved. According to the invention, a low-molecular-weight flexible conjugated polyene chain is creatively selected as a pi electron bridge, so that the extension of a pi conjugated system can be effectively realized, the small molecular weight of the dye can be maintained, and moreover, the conjugated polyene chain is used for prolonging a pi-conjugated structure to enhance an ICT effect, so that the dye has a good application prospect. The red shift of the emission wavelength can be realized while the molecular weight is kept small. Therefore, on the basis of the p-hydroxybenzylidene-imidazolinone chromophore, an ICT effect is synergistically enhanced through an integrated molecular design strategy, a series of small-molecular-weight fluorescent dyes with a D-pi-A1 or D-pi-A1-pi-A2 structure are constructed, the maximum wavelength can reach 1200 nm or above, the blood-brain barrier permeability of the dye as a probe is ensured, and the fluorescent dye can be used for detecting the blood-brain barrier permeability of the probe. The method can be applied to in-vivo in-situ brain imaging.

Polymer compositions include an interpolymer of ethylene, an α-olefin, and a nonconjugated polyene; and from 10% to 40% by weight oil. The polymer composition has a Mooney viscosity from 20 to 70. The interpolymer may include from 66% to 75% by weight monomer units derived from ethylene; and from 0.5% to 10% by weight monomer units derived from the nonconjugated polyene. The neat interpolymer may have: a weight-average molecular weight Mw from 250 kDa to 300 kDa; a Mooney viscosity from 50 to 200; a rheology ratio V0.1 / V100 less than 30; a ratio of molecular weight to low-shear viscosity Mw / V0.1 greater than 4.0; a polydispersity index from 2.0 to 3.5; and a tan δ at 0.1 rad / sand 190° C. greater than 2.0. The polymer compositions may be in the form of pellets having desirable flow characteristics. Thermoplastic vulcanizates may include the polymer compositions. Articles may include the thermoplastic vulcanizates.

A rubber composition is provided which is excellent in crosslinking characteristics and processability and is excellent in durability and heat resistance after crosslinking by using a sulfur-based crosslinking agent and a peroxide crosslinking agent in combination. The rubber composition includes 100 parts by mass of ethylene-propylene non-conjugated polyene copolymer, 1 to 3 parts by mass of peroxide crosslinking agent, and 0.1 to 0.6 parts by mass of thiazole-based crosslinking promoter. A content ratio of propylene is 30 to 55 percent by the total content of ethylene and propylene in the EPDM polymer.

To obtain an ethylene copolymer composition or the like which can form a molded product having excellent workability and cold resistance even if an additive other than a copolymer elastomer is highly filled and blended.SOLUTION: There is provided an ethylene copolymer composition which comprises an ethylene / α-olefin / non-conjugated polyene copolymer (A) having a structural unit derived from ethylene, a structural unit derived from an α-olefin [A2] having 4 to 20 carbon atoms and a structural unit derived from a non-conjugated polyene [A3] containing 2 or more partial structures selected from the group consisting of the following formulas (I) and (II) in total in one molecule in which the [A2] contains 1-butene and the [A3] contains 5-vinyl-2-norbornene and satisfying specific requirements, 5 to 150 pts.mass of carbon black, 5 to 100 pts.mass of a softening agent, 0.5 to 7.0 pts.mass of an antiaging agent and 1 to 30 pts.mass of an organic peroxide based on 100 pts.mass of the copolymer (A), wherein the weight of the entire composition is 170 pts.mass or more based on 100 pts.mass of the copolymer (A).SELECTED DRAWING: None