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公开(公告)号：US12037447B2
公开(公告)日：2024-07-16
申请号：US16881403
申请日：2020-05-22
申请人： Novomer, Inc.
发明人： Jay J. Farmer , Peter Galebach , Kyle Sherry , Sadesh H. Sookraj
CPC分类号： C08G63/08 , C07C51/09 , C07C57/04 , C08F4/30 , C08F120/06 , C08G63/06 , C08G2650/04 , C07C51/09 , C07C57/04
摘要： Disclosed are compositions, systems and methods related to a polypropiolactone composition comprising polypropiolactone polymers. Such polymers include polypropiolactone chains of Formula (I): where n is an integer from 10 to about 1,000 and Y is either —H or a cation.
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2.发明公开公开(公告)号：US20230399286A1
公开(公告)日：2023-12-14
申请号：US18249917
申请日：2021-10-07
申请人： Röhm GmbH
发明人： Ufuk KOCKESEN , Patrick Wings , Steffen Krill , Florian Klasovsky
IPC分类号： C07C69/54 , C07C67/20 , C07C51/06 , C07C57/04 , C07C231/06 , C07C231/12 , C07C303/24
CPC分类号： C07C69/54 , C07C67/20 , C07C51/06 , C07C57/04 , C07C231/06 , C07C231/12 , C07C303/24
摘要： A process for preparing methyl methacrylate (MMA) and/or methacrylic acid (MAS) having improved yield, involves amidation, conversion, and hydrolysis/esterification. Especially high yields are obtained during the amidation and in the subsequent so-called conversion.
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公开(公告)号：US11667981B2
公开(公告)日：2023-06-06
申请号：US17100679
申请日：2020-11-20
申请人： Virdia, LLC
发明人： Aharon Eyal , Robert P. Jansen
IPC分类号： C13K1/02 , C08H8/00 , C13K13/00 , A61L15/42 , C08H7/00 , C08L97/02 , D21C3/00 , D21H11/00 , C10L1/00 , C10L1/02 , C10L1/04 , C10L1/06 , C10L1/08 , C07C57/04 , C08K3/20 , C10L1/18 , C11D3/382 , C11D3/386 , A61L15/20 , C11D1/66 , C12P7/10 , C12P7/18 , C12P7/56 , D21C5/02
CPC分类号： C13K1/02 , A61L15/20 , A61L15/42 , C07C57/04 , C08H6/00 , C08H8/00 , C08K3/20 , C08L97/02 , C10L1/003 , C10L1/02 , C10L1/026 , C10L1/04 , C10L1/06 , C10L1/08 , C10L1/1802 , C11D1/66 , C11D3/382 , C11D3/386 , C11D3/38609 , C11D3/38618 , C12P7/10 , C12P7/18 , C12P7/56 , C13K13/00 , C13K13/002 , C13K13/007 , D21C3/00 , D21C5/022 , D21H11/00 , C12P2201/00 , Y02E50/10
摘要： Processes for converting lignocellulose to feedstock and downstream products are disclosed. The processes may include acid treatment of lignocellulose to produce a fermentation feedstock. In various instances, the processes include recovery or recycling of acid, such as recovery of hydrochloric acid from concentrated and/or dilute streams. Downstream products may include acrylic acid-based products such as diapers, paper and paper-based products, ethanol, biofuels such as biodiesel and fuel additives, and detergents.
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公开(公告)号：US11661393B2
公开(公告)日：2023-05-30
申请号：US16944554
申请日：2020-07-31
发明人： Minoru Urata , Kazuhiko Nakamura , Jun Moteki
摘要： Provided is a method of producing various 2-((meth)allyloxymethyl)acrylic acid derivatives in high yields with no need to load a raw material in a large excess for improving a reaction conversion ratio, and without use of a catalyst having high toxicity or a strong acid catalyst. Also provided are powder compounds that may be utilized as raw materials for synthesizing various chemical products. A method of producing a 2-((meth)allyloxymethyl)acrylic acid derivative includes causing the powder of a salt of a 2-((meth)allyloxymethyl)acrylic acid anion and an alkali metal cation (component A), and a halide (component B) to react with each other to produce a 2-((meth)allyloxymethyl)acrylic acid derivative. The 2-((meth)allyloxymethyl)acrylic acid alkali metal salt powder is the powder of a salt of a 2-((meth)allyloxymethyl)acrylic acid anion and an alkali metal cation, and has a bulk density of 0.50 g/mL or more, or a water content of 0.05 wt % or less.
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公开(公告)号：US11584706B2
公开(公告)日：2023-02-21
申请号：US17337688
申请日：2021-06-03
申请人： Noroo IC Co., Ltd.
发明人： Jeung Yeop Shim , Ki Soo Park , Ashok Somasundar , Sung Hoon Park
摘要： The disclosure provides methods and apparatus for producing 3-hydroxypropionic acid or a salt thereof, for removing 3-hydroxypropionic acid from aqueous solution (e.g., aqueous broth), and for using it to make various chemicals.
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公开(公告)号：US20230020130A1
公开(公告)日：2023-01-19
申请号：US17783227
申请日：2021-01-08
摘要： A catalyst containing, as an essential component, molybdenum; bismuth; and cobalt, in which, with respect to a peak intensity at 2θ=25.3°±0.2° in an X-ray diffraction pattern obtained by using CuKα rays as an X-ray source, a changing rate (Q1) per 1000 hours of reaction time represented by the following formulae (1) to (4) is 16 or less. Q1={(U1/F1−1)×100}/T×1000 (1) F1=(peak intensity of catalyst before oxidation reaction at 2θ=25.3°±)0.2°/(peak intensity of catalyst before oxidation reaction at 2θ=26.5°±0.2°)×100 (2) U1=(peak intensity of catalyst after oxidation reaction at 2θ=25.3°±0.2°)/(peak intensity of catalyst after oxidation reaction at 2θ=26.5°±0.2°)×100 (3) T=time (hr) during which oxidation reaction is carried out (4)
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公开(公告)号：US11174215B2
公开(公告)日：2021-11-16
申请号：US16496695
申请日：2018-03-23
发明人： Neil Tindale
摘要： There is described a method of reducing polymer tar build-up in the production of methyl methacrylate and/or methacrylic acid by the acetone cyanohydrin process. In the method a stabiliser is contacted with the amide stage reaction medium. The stabiliser includes a hydrocarbon moiety capable of donating a labile hydrogen atom to a methacrylamide derivative capable of reaction with said labile hydrogen atom under the conditions in the said medium. The method herein is especially useful for the continuous production of methyl methacrylate and/or methacrylic acid.
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公开(公告)号：US10961179B2
公开(公告)日：2021-03-30
申请号：US15765496
申请日：2016-09-26
申请人： Arkema France
发明人： Michel Fauconet , Sandeep Jain
IPC分类号： C07C57/04 , C07C51/44 , C08F20/06 , C07C51/487 , C07C51/46
摘要： A process for the recovery of polymer-grade (meth)acrylic acid, in the absence of organic solvent, from a gaseous reaction mixture comprising (meth)acrylic acid obtained by gas-phase oxidation of a precursor of the (meth)acrylic acid, the process carried out in a plant comprising at least one dehydration column and one finishing column, being characterized by the presence of at least one chemical treatment agent targeted at reducing the content of residual aldehydes. (Meth)acrylic acid obtained according to the invention meets criteria of high quality allowing it to be used in the manufacture of acrylic polymers, in particular for superabsorbents. This grade is also known as glacial acrylic acid GAA.
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公开(公告)号：US10919834B2
公开(公告)日：2021-02-16
申请号：US16614450
申请日：2018-05-22
发明人： Yuki Kase , Toyofumi Sakai , Yasutaka Takemoto , Masashi Mukae
摘要： A method for producing (meth)acrylic acid comprising: a step of obtaining a (meth)acrylic acid-containing gas by subjecting a (meth)acrylic acid production raw material to a catalytic gas phase oxidation reaction; a step of obtaining a (meth)acrylic acid-containing liquid by bringing the (meth)acrylic acid-containing gas into contact with a collection solvent and/or condensing the (meth)acrylic acid-containing gas by cooling; a step of obtaining crude (meth)acrylic acid by introducing the (meth)acrylic acid-containing liquid into a low-boiling separation column; a step of obtaining purified (meth)acrylic acid and a refining residue containing a glyoxal compound by purifying the crude (meth)acrylic acid; and a step of returning at least a part of the refining residue to the low-boiling separation column; wherein a returning position of the refining residue to the low-boiling separation column is located closer to a bottom side of the low-boiling separation column than a supply port of the (meth)acrylic acid-containing liquid.
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公开(公告)号：US10717695B2
公开(公告)日：2020-07-21
申请号：US16107881
申请日：2018-08-21
申请人： Novomer, Inc.
发明人： Sadesh H. Sookraj
摘要： Provided are integrated processes for the conversion of beta propiolactone to acrylic acid. Systems for the production of acrylic acid are also provided.
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