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1. (WO2019050830) METHOD FOR RECOVERY OF METHACROLEIN AND METHANOL FROM METHACROLEIN DIMETHYLACETAL
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Pub. No.: WO/2019/050830 International Application No.: PCT/US2018/049336
Publication Date: 14.03.2019 International Filing Date: 04.09.2018
IPC:
C07C 69/54 (2006.01) ,C07C 47/22 (2006.01) ,C07C 31/04 (2006.01) ,C07C 67/39 (2006.01) ,C07C 45/51 (2006.01) ,C07C 29/09 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
69
Esters of carboxylic acids; Esters of carbonic or haloformic acids
52
Esters of acyclic unsaturated carboxylic acids having the esterified carboxyl group bound to an acyclic carbon atom
533
Monocarboxylic acid esters having only one carbon-to-carbon double bond
54
Acrylic acid esters; Methacrylic acid esters
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
47
Compounds having -CHO groups
20
Unsaturated compounds having -CHO groups bound to acyclic carbon atoms
21
with only carbon-to-carbon double bonds as unsaturation
22
Acrylaldehyde; Methacrylaldehyde
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
31
Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
02
Monohydroxylic acyclic alcohols
04
Methanol
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
67
Preparation of carboxylic acid esters
39
by oxidation of groups which are precursors for the acid moiety of the ester
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
45
Preparation of compounds having CO groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
51
by pyrolysis, rearrangement or decomposition
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
29
Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
09
by hydrolysis
Applicants:
DOW GLOBAL TECHNOLOGIES LLC [US/US]; 2040 Dow Center Midland, MI 48674, US
ROHM AND HAAS COMPANY [US/US]; 400 Arcola Road Collegeville, PA 19426, US
Inventors:
SOPCHIK, Alan E.; US
WORLEY, William G.; US
SHAH, Rajesh; US
Agent:
BRANT, Edward L.; US
Priority Data:
62/556,52711.09.2017US
Title (EN) METHOD FOR RECOVERY OF METHACROLEIN AND METHANOL FROM METHACROLEIN DIMETHYLACETAL
(FR) PROCÉDÉ DE RÉCUPÉRATION DE MÉTHACROLÉINE ET DE MÉTHANOL À PARTIR DE MÉTHACROLÉINE DIMÉTHYLACÉTAL
Abstract:
(EN) A process for recovering methacrolein and methanol from methacrolein dimethyl acetal. The method comprises a step of contacting a mixture comprising methyl methacrylate and methacrolein dimethyl acetal with a strong acid ion exchange resin in the presence of water. The mixture comprises no more than 0.2 wt% sodium methacrylate.
(FR) L'invention concerne un procédé de récupération de méthacroléine et de méthanol à partir de méthacroléine diméthylacétal. Le procédé comprend une étape qui consiste à mettre en contact un mélange comprenant du méthacrylate de méthyle et de l'acétal diméthylique de méthacroléine avec une résine échangeuse d'ions d'acide fort en présence d'eau. Le mélange ne comprend pas plus de 0,2 % en poids de méthacrylate de sodium.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)