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1. (WO2019067318) MAKING PARTICLES WITH RADIAL VARIATION
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/067318 International Application No.: PCT/US2018/052162
Publication Date: 04.04.2019 International Filing Date: 21.09.2018
IPC:
C08F 212/08 (2006.01) ,C08F 2/20 (2006.01) ,C08F 12/22 (2006.01) ,B01J 39/20 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
212
Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
02
Monomers containing only one unsaturated aliphatic radical
04
containing one ring
06
Hydrocarbons
08
Styrene
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2
Processes of polymerisation
12
Polymerisation in non-solvents
16
Aqueous medium
18
Suspension polymerisation
20
with the aid of macromolecular dispersing agents
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
12
Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
02
Monomers containing only one unsaturated aliphatic radical
04
containing one ring
14
substituted by hetero atoms or groups containing hetero atoms
22
Oxygen
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
39
Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
08
Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
16
Organic material
18
Macromolecular compounds
20
Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
Applicants:
ROHM AND HAAS COMPANY [US/US]; 400 Arcola Road Collegeville, PA 19426, US
Inventors:
SAVO, Andrew, M.; US
FINCH, John, David; US
JONES, Thomas; US
Agent:
CRIMALDI, Kenneth; US
Priority Data:
62/565,40529.09.2017US
Title (EN) MAKING PARTICLES WITH RADIAL VARIATION
(FR) FABRICATION DE PARTICULES À VARIATION RADIALE
Abstract:
(EN) Provided is a process of making polymeric beads comprising (a) providing a suspension of monomer droplets in an aqueous medium at pH of 7 or less, wherein the monomer droplets comprise one or more monofunctional vinyl monomers, one or more multifunctional vinyl monomers, and one or more initiators, wherein the aqueous medium comprises one or more derivatives of a nitrite salt in an amount, by weight based on the weight of the aqueous medium, of 0.005% to 0.5%, (b) initiating polymerization of the monomer, wherein no pH-raising substance is added after beginning step (b) until 60% or more by weight of all monofunctional monomer has been converted to polymer.
(FR) L'invention concerne un procédé de fabrication de billes polymères, comprenant (a) la préparation d'une suspension de gouttelettes de monomère dans un milieu aqueux à un pH inférieur ou égal à 7, les gouttelettes de monomère comprenant un ou plusieurs monomères vinyliques monofonctionnels, un ou plusieurs monomères vinyliques multifonctionnels et un ou plusieurs initiateurs et le milieu aqueux comprenant un ou plusieurs dérivés d'un sel de type nitrite en une quantité, en poids par rapport au poids du milieu aqueux, de 0,005 % à 0,5 %, et (b) l'amorce de la polymérisation du monomère, aucune substance d'augmentation du pH n'étant ajoutée après le début de l'étape (b) jusqu'à ce que 60 % ou plus en poids de tous les monomères monofonctionnels aient été convertis en polymère.
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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)