Patents by Inventor Makoto Egawa
Makoto Egawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240101799Abstract: [Problem] To provide a laminate having a polar resin layer, which is excellent in transparency and mechanical strength (in particular impact resistance), and a polar resin composition for forming the polar resin layer of the laminate having such properties. [Solution] A polar resin composition including 5 to 30% by mass of an ethylenic polymer (A), 40 to 85% by mass of a polar resin component (B), and 10 to 40% by mass of a modified ethylene/?-olefin copolymer (C) obtained by modifying an ethylene/?-olefin copolymer (CO) with an unsaturated carboxylic acid or a derivative thereof and having a melt flow rate (190° C., 2.16 kg load) of 0.1 to 50 g/10 minutes, provided that the sum of proportions of the (A), (B), and (C) is 100% by mass.Type: ApplicationFiled: March 9, 2022Publication date: March 28, 2024Applicant: MITSUI CHEMICALS, INC.Inventors: Nao SHIOZAKI, Kiminori NODA, Makoto EGAWA, Yuki KAI, Hiroshi HOYA
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Publication number: 20240001653Abstract: A laminate containing a propylene polymer as a main component, relating to a sealant film including a heat-seal layer and an adjacent layer, wherein the sealant film satisfies the following requirement (1) the sealant film is a stretched film or a non-stretched film; the heat-seal layer contains an olefin polymer (B) satisfying the following requirement (2): a melting point is less than 120° C. or is not observed; and a propylene polymer (A) satisfying the following requirement (3): a melting point is 121° C. or more and 170° C. or less; and the adjacent layer contains 1 to 70% by mass of the propylene polymer (A) satisfying the following requirement (3) and 30 to 99% by mass of the olefin polymer (B) satisfying the following requirement (2), and contains 0 to 70% by mass of a propylene polymer (B2) in the olefin polymer (B), provided that (A)+(B)=100% by mass.Type: ApplicationFiled: October 25, 2021Publication date: January 4, 2024Applicant: MITSUI CHEMICALS, INC.Inventors: Ryoji MORIWAKI, Hiroshi HOYA, Nozomi KAMIYA, Nao SHIOZAKI, Takahiro MIZUMA, Makoto EGAWA, Yuki KAI
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Publication number: 20220251260Abstract: A propylene-ethylene-?-olefin copolymer satisfying: (I) a content of a propylene-derived constituent unit (i) is 50 to 92 mol %, a content of an ethylene-derived constituent unit (ii) is 5 to 20 mol %, and a content of a C4-20 ?-olefin-derived constituent unit (iii) is 3 to 30 mol %, provided that (i) to (iii) total 100 mol %; (II) an mm fraction calculated by 13C-NMR is 85% or more; (III) 0.9?MOE/(2MO×ME)?1.5 wherein MOE represents a mole fraction of chains of propylene and ethylene and chains of the C4-20 ?-olefin and ethylene in total to the total dyad, MO represents mole fractions of propylene and the C4-20 ?-olefin in total, and ME represents a mole fraction of ethylene; (IV) an MFR is 1 to 3 g/10 minutes; and (V) a melting point measured by DSC is less than 100° C., or no melting peak is observed.Type: ApplicationFiled: May 28, 2020Publication date: August 11, 2022Applicant: MITSUI CHEMICALS, INC.Inventors: Takahiro MIZUMA, Tatsuya OKU, Nozomi KAMIYA, Kiminori NODA, Tetsuya NAKAMURA, Makoto EGAWA, Yuki KAI, Hiroshi HOYA
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Patent number: 10896988Abstract: A laminated sheet of a two-layer sheet in which an L1 layer including 50 to 99 parts by mass of an ethylene-based polymer (E1) having a density of 0.890 to 970 kg/m3 and 1 to 50 parts by mass of a propylene-based polymer (P1) is in contact with an L2 layer including 50 to 100 parts by mass of a propylene-based polymer (P2) and 0 to 50 parts by mass of an ethylene-based elastomer (E2) having a density of equal to or more than 850 kg/m3 and less than 890 kg/m3, in which the propylene-based polymer (P1) includes a propylene-based elastomer (P1a) including a propylene-derived constitutional unit and an ethylene-derived constitutional unit and/or a constitutional unit derived from an ?-olefin having 4 to 20 carbon atoms, and having a melting point (Tm) that is lower than 120° C. or not observable; and a solar cell backsheet formed using the same.Type: GrantFiled: January 12, 2017Date of Patent: January 19, 2021Assignee: MITSUI CHEMICALS, INC.Inventors: Koya Yoshimoto, Kiminori Noda, Makoto Egawa, Tatsuya Oku
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Publication number: 20200282709Abstract: A resealable packaging container, which is a resealable package including a lid material that uses a multilayer film including three layers in which a substrate layer (A), an intermediate layer (B), and a heat seal layer (C) are laminated in the sequence (A)/(B)/(C); and a bottom material that uses a single-layer or multilayer sheet having an adherend (D) that can adhere to the heat seal layer (C), wherein the substrate layer (A), the intermediate layer (B), and the heat seal layer (C) all include a polyolefin resin, and when the heat seal layer (C) and the adherend (D) are heat-sealed to form a heat seal part, and the multilayer film is subsequently peeled from the heat seal part, the intermediate layer (B) and the heat seal layer (C) are delaminated and exposed in a resealable state.Type: ApplicationFiled: February 2, 2017Publication date: September 10, 2020Applicant: MITSUI CHEMICALS, INC.Inventors: Tatsuya OKU, Shinya TANAKA, Makoto EGAWA
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Patent number: 10767043Abstract: Provided is an aromatic polycarbonate resin composition that is excellent in terms of hue and thermal yellowing-inhibiting effect and is suitable for light guide members incorporated in automobile lighting devices. The aromatic polycarbonate resin composition comprises: 100 parts by mass of an aromatic polycarbonate resin (A); 0.001 to 0.1 parts by mass of a phosphite stabilizer (B-I) as a phosphorus-based stabilizer (B) having a spiro ring skeleton; 0.01 to 0.5 parts by mass of a phosphite stabilizer (B-II) as a phosphorus-based stabilizer (B) represented by general formula (II) below; 0.05 to 2 parts by mass of a polybutylene glycol compound (C); and 0.0005 to 0.2 parts by mass of an epoxy compound (D). In the formula (II), R21 to R25 each independently represent a hydrogen atom, an aryl group having 6 to 20 carbon atoms, or an alkyl group having 1 to 20 carbon atoms.Type: GrantFiled: September 27, 2016Date of Patent: September 8, 2020Assignee: Mitsubishi Enigineering-Plastics CorporationInventor: Makoto Egawa
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Patent number: 10639871Abstract: A laminate film (30) of the present invention includes a heat sealing layer (10) composed of a resin composition including, with respect to 20 to 95 parts by weight of a propylene-based polymer (A) having a melting point (Tm) of equal to or higher than 120° C. and equal to or lower than 170° C. as measured by differential scanning calorimetry (DSC), a total of 5 to 80 parts by weight of two or more kinds of copolymers selected from the group consisting of a propylene.Type: GrantFiled: August 21, 2015Date of Patent: May 5, 2020Assignee: MITSUI CHEMICALS, INC.Inventors: Tatsuya Oku, Tomohiro Abe, Satoshi Ikeda, Kiminori Noda, Makoto Egawa
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Patent number: 10603883Abstract: Disclosed is a stretched laminated film 30 having a heat-sealable layer 10 composed of a resin composition which contains 50 to 97 parts by mass of a propylene-based polymer (A) having a melting point (Tm) of not lower than 120° C. but not higher than 170° C. and comprising more than 50% by mol of a structural unit derived from propylene, 3 to 50 parts by mass of a 1-butene-based polymer (B) having a melting point (Tm) of lower than 120° C. and comprising 10 to 90% by mol of a structural unit derived from 1-butene and 10 to 90% by mol of a structural unit derived from an ?-olefin having 3 or 5 to 20 carbon atoms, and optionally 3 to 30 parts by mass of an ethylene ?-olefin copolymer (C) comprising 50 to 99% by mol of a structural unit derived from ethylene and 1 to 50% by mol of a structural unit derived from an ?-olefin having 3 to 20 carbon atoms, wherein the sum of the component (A) and the component (B) is 100 parts by mass; and a base layer 20.Type: GrantFiled: September 25, 2015Date of Patent: March 31, 2020Assignee: MITSUI CHEMICALS, INC.Inventors: Tatsuya Oku, Tomohiro Abe, Satoshi Ikeda, Kiminori Noda, Makoto Egawa
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Publication number: 20190027626Abstract: A laminated sheet of a two-layer sheet in which an L1 layer including 50 to 99 parts by mass of an ethylene-based polymer (E1) having a density of 0.890 to 970 kg/m3 and 1 to 50 parts by mass of a propylene-based polymer (P1) is in contact with an L2 layer including 50 to 100 parts by mass of a propylene-based polymer (P2) and 0 to 50 parts by mass of an ethylene-based elastomer (E2) having a density of equal to or more than 850 kg/m3 and less than 890 kg/m3, in which the propylene-based polymer (P1) includes a propylene-based elastomer (P1a) including a propylene-derived constitutional unit and an ethylene-derived constitutional unit and/or a constitutional unit derived from an ?-olefin having 4 to 20 carbon atoms, and having a melting point (Tm) that is lower than 120° C. or not observable; and a solar cell backsheet formed using the same.Type: ApplicationFiled: January 12, 2017Publication date: January 24, 2019Applicant: MITSUI CHEMICALS, INC.Inventors: Koya YOSHIMOTO, Kiminori NODA, Makoto EGAWA, Tatsuya OKU
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Publication number: 20180201782Abstract: Provided is an aromatic polycarbonate resin composition that is excellent in terms of hue and thermal yellowing-inhibiting effect and is suitable for light guide members incorporated in automobile lighting devices. The aromatic polycarbonate resin composition comprises: 100 parts by mass of an aromatic polycarbonate resin (A); 0.001 to 0.1 parts by mass of a phosphite stabilizer (B-I) as a phosphorus-based stabilizer (B) having a spiro ring skeleton; 0.01 to 0.5 parts by mass of a phosphite stabilizer (B-II) as a phosphorus-based stabilizer (B) represented by general formula (II) below; 0.05 to 2 parts by mass of a polybutylene glycol compound (C); and 0.0005 to 0.2 parts by mass of an epoxy compound (D). In the formula (II), R21 to R25 each independently represent a hydrogen atom, an aryl group having 6 to 20 carbon atoms, or an alkyl group having 1 to 20 carbon atoms.Type: ApplicationFiled: September 27, 2016Publication date: July 19, 2018Applicant: Mitsubishi Engineering-Plastics CorporationInventor: Makoto EGAWA
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Patent number: 10017591Abstract: An object of the invention is to provide compositions which have low-temperature heat sealing properties, are free from stickiness, may achieve a heat seal strength controlled within a certain definite range when heat sealing takes place at low temperatures, have small changes in heat seal strength with time, and are such that in the packaging applications, the strength required to open the packages may be easily controlled within a certain definite range, and high-performance packages may be designed. The invention resides in a 1-butene.?-olefin copolymer composition including 99 to 1 parts by mass of at least one olefin polymer (X) selected from propylene polymers (X-1) and ethylene polymers (X-2), and 1 to 99 parts by mass of a 1-butene.?-olefin copolymer (Y) containing 0.1 to 30 mol % of one or more ?-olefins selected from ?-olefins and having a molecular weight distribution (Mw/Mn) of 1.0 to 3.5 [wherein the total of (X) and (Y) in the composition is 100 parts by mass].Type: GrantFiled: October 18, 2016Date of Patent: July 10, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Ikuo Akai, Tomohiro Abe, Koya Yoshimoto, Masayoshi Yamaguchi, Shinya Tanaka, Koji Matsunaga, Makoto Egawa
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Publication number: 20170349729Abstract: Provided are: an aromatic polycarbonate resin composition which has excellent hue and is suitable as a molding material for light guide members; and a molded article which is obtained by molding this aromatic polycarbonate resin composition. An aromatic polycarbonate resin composition which contains: an aromatic polycarbonate resin (A); and 0.01-0.1 part by mass of a phosphite-based stabilizer (B-I) represented by general formula (I), which serves as a phosphorus-based stabilizer (B), and 0.05-2 parts by mass of a polyalkylene glycol compound (C), per 100 parts by mass of the aromatic polycarbonate resin (A). In the formula, each of R11-R18 represents a hydrogen atom or an alkyl group; each of R29-R22 represents an alkyl group, an aryl group or an aralkyl group; and each of a-d represents an integer of 0-3.Type: ApplicationFiled: January 26, 2016Publication date: December 7, 2017Applicant: c/o Mitsubishi Engineering-Plastics CorporationInventor: Makoto EGAWA
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Publication number: 20170266934Abstract: A laminate film (30) of the present invention includes a heat sealing layer (10) composed of a resin composition including, with respect to 20 to 95 parts by weight of a propylene-based polymer (A) having a melting point (Tm) of equal to or higher than 120° C. and equal to or lower than 170° C. as measured by differential scanning calorimetry (DSC), a total of 5 to 80 parts by weight of two or more kinds of copolymers selected from the group consisting of a propylene.Type: ApplicationFiled: August 21, 2015Publication date: September 21, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Tatsuya OKU, Tomohiro ABE, Satoshi IKEDA, Kiminori NODA, Makoto EGAWA
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Publication number: 20170217144Abstract: Disclosed is a stretched laminated film 30 having a heat-sealable layer 10 composed of a resin composition which contains 50 to 97 parts by mass of a propylene-based polymer (A) having a melting point (Tm) of not lower than 120° C. but not higher than 170° C. and comprising more than 50% by mol of a structural unit derived from propylene, 3 to 50 parts by mass of a 1-butene-based polymer (B) having a melting point (Tm) of lower than 120° C. and comprising 10 to 90% by mol of a structural unit derived from 1-butene and 10 to 90% by mol of a structural unit derived from an ?-olefin having 3 or 5 to 20 carbon atoms, and optionally 3 to 30 parts by mass of an ethylene ?-olefin copolymer (C) comprising 50 to 99% by mol of a structural unit derived from ethylene and 1 to 50% by mol of a structural unit derived from an ?-olefin having 3 to 20 carbon atoms, wherein the sum of the component (A) and the component (B) is 100 parts by mass; and a base layer 20.Type: ApplicationFiled: September 25, 2015Publication date: August 3, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Tatsuya OKU, Tomohiro ABE, Satoshi IKEDA, Kiminori NODA, Makoto EGAWA
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Publication number: 20170037161Abstract: An object of the invention is to provide compositions which have low-temperature heat sealing properties, are free from stickiness, may achieve a heat seal strength controlled within a certain definite range when heat sealing takes place at low temperatures, have small changes in heat seal strength with time, and are such that in the packaging applications, the strength required to open the packages may be easily controlled within a certain definite range, and high-performance packages may be designed. The invention resides in a 1-butene.?-olefin copolymer composition including 99 to 1 parts by mass of at least one olefin polymer (X) selected from propylene polymers (X-1) and ethylene polymers (X-2), and 1 to 99 parts by mass of a 1-butene.?-olefin copolymer (Y) containing 0.1 to 30 mol % of one or more ?-olefins selected from ?-olefins and having a molecular weight distribution (Mw/Mn) of 1.0 to 3.5 [wherein the total of (X) and (Y) in the composition is 100 parts by mass].Type: ApplicationFiled: October 18, 2016Publication date: February 9, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Ikuo AKAI, Tomohiro ABE, Koya YOSHIMOTO, Masayoshi YAMAGUCHI, Shinya TANAKA, Koji MATSUNAGA, Makoto EGAWA
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Patent number: 9505958Abstract: An object of the invention is to provide compositions which have low-temperature heat sealing properties, are free from stickiness, may achieve a heat seal strength controlled within a certain definite range when heat sealing takes place at low temperatures, have small changes in heat seal strength with time, and are such that in the packaging applications, the strength required to open the packages may be easily controlled within a certain definite range, and high-performance packages may be designed. The invention resides in a 1-butene.?-olefin copolymer composition including 99 to 1 parts by mass of at least one olefin polymer (X) selected from propylene polymers (X-1) and ethylene polymers (X-2), and 1 to 99 parts by mass of a 1-butene.?-olefin copolymer (Y) containing 0.1 to 30 mol % of one or more ?-olefins selected from ?-olefins and having a molecular weight distribution (Mw/Mn) of 1.0 to 3.5 [wherein the total of (X) and (Y) in the composition is 100 parts by mass].Type: GrantFiled: September 13, 2013Date of Patent: November 29, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Ikuo Akai, Tomohiro Abe, Koya Yoshimoto, Masayoshi Yamaguchi, Shinya Tanaka, Koji Matsunaga, Makoto Egawa
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Publication number: 20150225623Abstract: An object of the invention is to provide compositions which have low-temperature heat sealing properties, are free from stickiness, may achieve a heat seal strength controlled within a certain definite range when heat sealing takes place at low temperatures, have small changes in heat seal strength with time, and are such that in the packaging applications, the strength required to open the packages may be easily controlled within a certain definite range, and high-performance packages may be designed. The invention resides in a 1-butene ?-olefin copolymer composition including 99 to 1 parts by mass of at least one olefin polymer (X) selected from propylene polymers (X-1) and ethylene polymers (X-2), and 1 to 99 parts by mass of a 1-butene ?-olefin copolymer (Y) containing 0.1 to 30 mol % of one or more ?-olefins selected from ?-olefins and having a molecular weight distribution (Mw/Mn) of 1.0 to 3.5 [wherein the total of (X) and (Y) in the composition is 100 parts by mass].Type: ApplicationFiled: September 13, 2013Publication date: August 13, 2015Inventors: Ikuo Akai, Tomohiro Abe, Koya Yoshimoto, Masayoshi Yamaguchi, Shinya Tanaka, Koji Matsunaga, Makoto Egawa
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Patent number: 6066312Abstract: A composition for external application having excellent percutaneous absorption property and skin-lightening and whitening effects, is disclosed, which composition comprises at least one particulate material selected from specific ellagic acid-based compound and an alkali metal salt of the ellagic acid-based compound, wherein the particulate material has an average particle diameter of not more than 50 .mu.m and contains particles having a particle diameter of not more than 70 .mu.m in an amount of not less than 70% by weight based on the weight of the particulate material.Type: GrantFiled: July 11, 1997Date of Patent: May 23, 2000Assignee: Lion CorporationInventors: Makoto Egawa, Yukiko Marui
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Patent number: 5141741Abstract: A novel anti-sunburn skin-care preparation, such as creams, foundations, milky lotions and the like, is proposed which contains, as the ultraviolet-absorbing and -shielding ingredient, a salt of ellagic acid with a polyvalent metal, e.g., calcium, barium and magnesium. The skin-care preparation is free from the problem of irritation and sensitization of human skin and exhibits excellent anti-sunburn effect with durability.Type: GrantFiled: December 4, 1989Date of Patent: August 25, 1992Assignee: Lion CorporationInventors: Keiichiro Ishida, Yoshimi Sato, Makoto Egawa, Keiji Takeuchi
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Patent number: 5017368Abstract: A composition for application to hair or scalp comprises (A) at least one compound selected from the group consisting of (i) forskolin and derivatives thereof and (ii) peptides having a basic skeletal structure represented by the following general formula (I):-P-Glu-His-Q-Arg-Trp-Gly-Lys- (I)(wherein P represents an L-norleucine or L-methionine residue; Q represents a D- or L-phenylalamine residue; and Glu, His, Arg, Trp, Gly and Lys are L-glutamic acid, L-histidine, L-arginine, L-tryptophan, glycine and L-lysine residues respectively); or the component A and (B) at least one compound selected from the group consisting of aliphatic acids, alcohols and derivatives thereof having an odd number of carbon atoms. The composition for hair or scalp exhibits excellent effect of preventing graying of the hair and restoring grayed hair to its natural color upon externally applied to the scalp and is highly safe as regards to the possibility of causing skin damage.Type: GrantFiled: January 31, 1990Date of Patent: May 21, 1991Assignee: Keikichi SugiyamaInventors: Keikichi Sugiyama, Koji Takada, Akira Fukushima, Makoto Egawa