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1. (WO2018137958) IMPROVED PROCESS FOR THE PRODUCTION OF EXPANDED MATERIAL BASED ON SULFONE POLYMERS
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Pub. No.: WO/2018/137958 International Application No.: PCT/EP2018/050901
Publication Date: 02.08.2018 International Filing Date: 15.01.2018
IPC:
C08J 9/00 (2006.01) ,C08L 81/06 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
9
Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
81
Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
06
Polysulfones; Polyethersulfones
Applicants:
DIAB INTERNATIONAL AB [SE/SE]; BOX 201 312 22 LAHOLM, SE
Inventors:
ALIPERTA, Luigi; IT
BRESSAN, Raffaela; IT
JACKSON, Stephen Leonard; US
SHELTON, Robert Wayne; US
Agent:
MARTEGANI, Franco; IT
GIULI, Maurizio; IT
Priority Data:
10201700000791625.01.2017IT
Title (EN) IMPROVED PROCESS FOR THE PRODUCTION OF EXPANDED MATERIAL BASED ON SULFONE POLYMERS
(FR) PROCÉDÉ AMÉLIORÉ DE PRODUCTION DE MATÉRIAU EXPANSÉ À BASE DE POLYMÈRES DE SULFONE
Abstract:
(EN) The invention relates to a process for the production of expanded material based on sulfone polymers, of the type that comprises an extrusion step in an extruder (2) of virgin sulfone polymer (1) with the injection of at least one expanding agent (3) and in the presence of at least one nucleating agent. According to the invention, a recycling step is provided of part of said expanded material (4), which provides a recycled product (9,11) used as raw material to the extruder (2) in combination with said virgin sulfone polymer (1).
(FR) L'invention concerne un procédé de production d'un matériau expansé à base de polymères de sulfone, du type comprenant une étape d'extrusion dans une extrudeuse (2) de polymère de sulfone vierge (1) avec l'injection d'au moins un agent d'expansion (3) et en présence d'au moins un agent de nucléation. Selon l'invention, une étape de recyclage est réalisée d'une partie dudit matériau expansé (4), qui fournit un produit recyclé (9, 11) utilisé en tant que matière première à l'extrudeuse (2) en combinaison avec ledit polymère de sulfone vierge (1).
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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)