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1. WO2014161707 - METHOD FOR CONTINUOUS PMI FOAM PRODUCTION

Publication Number WO/2014/161707
Publication Date 09.10.2014
International Application No. PCT/EP2014/054848
International Filing Date 12.03.2014
IPC
B29C 44/34 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming
34Component parts, details or accessories; Auxiliary operations
B29C 35/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
35Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
02Heating or curing, e.g. crosslinking or vulcanising
08by wave energy or particle radiation
B29C 44/26 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming
20for articles of indefinite length
26using several expanding steps
B29K 33/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D103
33Use of polymers of unsaturated acids or derivatives thereof, as moulding material 
CPC
B29C 2035/0822
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
35Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
02Heating or curing, e.g. crosslinking or vulcanizing ; during moulding, e.g. in a mould
08by wave energy or particle radiation
0805using electromagnetic radiation
0822using IR radiation
B29C 44/26
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming ; ; Producing porous or cellular expanded plastics articles
20for articles of indefinite length
26using several expanding steps
B29C 44/3415
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming ; ; Producing porous or cellular expanded plastics articles
34Auxiliary operations
3415Heating or cooling
B29K 2033/26
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2033Use of polymers of unsaturated acids or derivatives thereof as moulding material ; B29K2035/00 takes precedence
26Polymers of acrylamide or methacrylamide
C08J 2333/24
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2333Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
24Homopolymers or copolymers of amides or imides
C08J 9/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
Applicants
  • EVONIK RÖHM GMBH [DE]/[DE] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
  • ZIMMERMANN, Cornelia (US)
  • BECKER, Florian [DE]/[DE] (US)
  • HEBERER, Wilfried [DE]/[DE] (US)
Inventors
  • BECKER, Florian
  • HEBERER, Wilfried
  • ZIMMERMANN, Rainer
Priority Data
10 2013 205 963.904.04.2013DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR KONTINUIERLICHEN PMI-SCHAUMFERTIGUNG
(EN) METHOD FOR CONTINUOUS PMI FOAM PRODUCTION
(FR) PROCÉDÉ DE PRODUCTION EN CONTINU DE MOUSSE DE POLYMÉTHACRYLIMIDE
Abstract
(DE)
Die vorliegende Erfindung betrifft ein Verfahren zur kontinuierlichen Fertigung von PMI-Schaumblöcken. Dabei weist dies eine hohe Flexibilität hinsichtlich der Größe der Blöcke auf. Dabei werden einzelne vorpolymerisierte PMI-Blöcke zunächst, bevorzugt mittels Spiegelschweißen, stirnseitig miteinander verbunden und anschließend in eine NIR-Heizstation gefahren. Dort schäumt das PMI-Polymerisat während des Durchlaufens dieser Station kontinuierlich auf. Der PMI-Schaum tritt am Ende als Endlosmaterial aus und kann in Einzelstücke beliebiger Länge und Form geschnitten bzw. gesägt werden. Vorteil dieses Verfahrens über die kontinuierliche Verfahrensweise hinaus ist, dass das PMI-Schaummaterial nahezu spannungsfrei ist und eine sehr gleichmäßige, geschlossenzellige Porenstruktur aufweist. Dieses geht einher mit einer gleichmäßigen Dichteverteilung über die Blockdicke, da der Schäumvorgang nicht von außen zur Blockmitte hin fortschreitet, sondern das Polymerisat gleichmäßig der Volumenvergrößerung unterworfen wird.
(EN)
The present invention relates to a method for continuous production of PMI foam blocks. The method has a high level of flexibility regarding the size of the blocks. Individual pre-polymerized PMI blocks are first joined to one another at their end faces, preferably by means of butt welding with heat reflectors, and then moved into an NIR heating station. There the PMI polymer foams up continuously while passing through the station. The PMI foam exits at the end as continuous material and can be cut or sawed into individual pieces of any desired length and shape. The advantage of this method in addition to the continuous method is that the PMI foam material is nearly strain-free and has a very uniform, closed-cell pore structure. This is accompanied by a uniform density distribution across the thickness of the block, since the foaming process does not proceed from the outside towards the centre of the block, but rather the polymer is subjected uniformly to the volume expansion.
(FR)
La présente invention concerne un procédé de production en continu de blocs de mousse de polyméthacrylimide (PMI) qui permet une grande flexibilité en termes de taille des blocs. Pour cela, on commence par assembler par leurs faces avant des blocs de PMI individuels prépolymérisés, de préférence par soudage en bout au moyen de réflecteurs, puis on les introduit dans un poste de chauffage fonctionnant dans le proche infrarouge où le polymère de PMI est expansé en continu à mesure qu'il traverse ce poste. La mousse de PMI sort à l'extrémité sous la forme d'une bande continue de matériau qui peut être découpée ou sciée pour obtenir des morceaux individuels de longueur et de forme quelconques. L'avantage de ce procédé par rapport au mode opératoire en continu est que le matériau en PMI expansé est pratiquement exempt de contraintes et qu'il possède une structure poreuse à cellules fermées très homogène. Ceci s'accompagne d'une distribution homogène de la densité sur l'épaisseur du bloc car le processus d'expansion ne progresse pas de l'extérieur jusqu'au centre du bloc, au contraire le polymère subit une augmentation de volume homogène.
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