DE972772C - Process for the preparation of press mixes - Google Patents
Process for the preparation of press mixesInfo
- Publication number
- DE972772C DE972772C DEC10907A DEC0010907A DE972772C DE 972772 C DE972772 C DE 972772C DE C10907 A DEC10907 A DE C10907A DE C0010907 A DEC0010907 A DE C0010907A DE 972772 C DE972772 C DE 972772C
- Authority
- DE
- Germany
- Prior art keywords
- weight
- parts
- brought
- formaldehyde
- wood flour
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims description 8
- 235000013312 flour Nutrition 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 235000013339 cereals Nutrition 0.000 claims description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 3
- 239000010425 asbestos Substances 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000007859 condensation product Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000012765 fibrous filler Substances 0.000 claims description 2
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 229910052895 riebeckite Inorganic materials 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004312 hexamethylene tetramine Substances 0.000 description 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 2
- 229920003986 novolac Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
Verfahren zur Herstellung von Preßmisdiungen Zusatz zum Patent 758962 In dem Hauptpatent 758 962 wird ein Verfahren zur Herstellung von Preßmischungen aus Phenol-Formaldehyd- oder Harnstoff - Formaldehyd - Kondensationsprodukten und pulvrigen oder faserartigen Füllstoffen, wie Holzmehl, Zellstoff, Asbest, Textilschnitzel oder -fasern u. dgl., beschrieben, indem man die gegebenenfalls vorher gemahlenen Bestandteile des Mischgutes im Mischer unter Einblasen von vorzugsweise überhitztem Dampf oder entsprechender Heißluft in Gegenwart von Wasser bis zur Erreichung des gewünschten Kondensationsgrades mischt und anschließend mit oder ohne Wärmezufuhr trocknet. Nach dem Hauptpatent kommen wasserhaltige hydrophile Harze allein oder im Gemisch mit hydrophoben Harzen zur Anwendung.Process for the production of pressed moldings Addition to patent 758962 In the main patent 758 962 is a process for the production of press mixes from Phenol-formaldehyde or urea-formaldehyde condensation products and powdery ones or fibrous fillers such as wood flour, cellulose, asbestos, textile chips or fibers and the like., Described by the optionally previously ground Components of the mix in the mixer with blowing in of preferably superheated Steam or equivalent hot air in the presence of water until the mixes the desired degree of condensation and then with or without supply of heat dries. According to the main patent, water-containing hydrophilic resins come alone or in a mixture with hydrophobic resins for use.
Die nach dem Verfahren des Hauptpatents erzeugten Preßmassen besitzen den Nachteil, daß die Körner bzw. Krümel verschiedene Durchmesser haben, was' sich bei der Verarbeitung störend auswirken kann. Have the molding compounds produced by the process of the main patent the disadvantage that the grains or crumbs have different diameters, what ' can interfere with processing.
Es wurde nun gefunden, daß der aufgezeigte Nachteil vermieden werden kann und man zu einer praktisch staubfreien Preßmasse mit Körnern gleichmäßigen Durchmessers gelangt, wenn man das Verfahren des Hauptpatents 758 962 derart ab ändert, daß die Flüssigkeitsmenge und die Tem peratur beim Mischprozeß so eingestellt wird, daß ein weichplastisches, bildsames Mischprodukt erhalten wird, dabei darf die Temperatur nicht über 700 C steigen. Das auf diese Weise erhaltene Mischprodukt wird in bekannter Weise mittels einer Strangpresse oder eines Granulators oder eines Schwingsilesbes zu Körnern gewünschten Durchmessers geformt, die dann dem im Hauptpatent beschriebenen Trockenprozeß unterworfen und auf die gewünschte Fließfähigkeit gebracht werden. It has now been found that the disadvantage shown can be avoided can and one to a practically dust-free molding compound with grains even Diameter arrives if you follow the procedure of the main patent 758 962 in such a way changes that the amount of liquid and the tem perature set during the mixing process that a soft plastic, malleable mixed product is obtained, is allowed the temperature does not rise above 700 C. The mixed product obtained in this way is in a known manner by means of an extruder or a granulator or a Vibrating silesbes formed into grains of the desired diameter, which are then named in the main patent Subjected drying process described and brought to the desired flowability will.
Beispiel I 636 Gewichtsteile Phenol-Novolak, go Gewi'chtsteile Hexamethylentetramin, 800 Gewichtsteile Holzmehl, 12 Gewichtsteile Zinkstearat und 400 Gewichtsteile einer 200/obigen wäßrigen Lösung von Phenoldialkohol werden durch Einblasen von Dampf in einen Mischkneter auf eine Temperatur von 500 gebracht und kurz gemischt. Anschließend wird das Mischgut durch ein Lochsieb (I-mm-Lochung) gedrückt und an der Austrittsöffnung durch eine geeignete Vorrichtung in bekannter Weise in Stücke von etwa I mm Länge geschnitten. Example I 636 parts by weight of phenol novolak, 50 parts by weight of hexamethylenetetramine, 800 parts by weight of wood flour, 12 parts by weight of zinc stearate and 400 parts by weight of one 200 / above aqueous solution of phenol dialcohol can be obtained by blowing steam brought to a temperature of 500 in a mixer and mixed briefly. Afterward the mixture is pressed through a perforated sieve (I-mm perforation) and at the outlet opening by a suitable device in a known manner into pieces about 1 mm in length cut.
Diese werden dann in einer Trockentrommel bei einer Temperatur von goOC getrocknet. Der Trockenprozeß wird so geleitet, daß das Trockengut 2 Stunden in der Trommel verweilt.These are then placed in a drying drum at a temperature of goOC dried. The drying process is conducted in such a way that the material to be dried is 2 hours lingers in the drum.
Beispiel 2 I250 Gewichtsteile eines 480/obigen Harnstoff-Formaldehyd-Kondensates, 420 Gewichtsteile Holzmehl, 30 Gewichtsteile Lithopon und 5 Gewichtsteile Zinkstearat werden durch Einblasen von Dampf auf 700 C gebracht und 30 Minuten bei dieser Temperatur in einem Eirich-Mischer gemischt. Example 2 I250 parts by weight of a 480 / above urea-formaldehyde condensate, 420 parts by weight of wood flour, 30 parts by weight of Lithopon and 5 parts by weight of zinc stearate are brought to 700 C by blowing in steam and at this temperature for 30 minutes mixed in an Eirich mixer.
Anschließend wird das pastenförmige Mischgut mittels einer Strangpresse durch eine Lochscheibe (o,5-mm-Lochung) zu kurzen Fäden geformt. Diese werden dann etwa 2 Stunden bei 700 C getrocknet.Then the pasty mix is made using an extruder formed into short threads by a perforated disc (0.5 mm perforation). These will then dried at 700 ° C. for about 2 hours.
Sie können mittels eines passenden Mahlaggregates zerkleinert werden, wobei der Staubanteil verhältnismäßig klein bleibt. Bei der Herstellung der Harzlösung kann der Harnstoff ganz oder teilweise durch seine Derivate, wie Thfoharnstoff, oder auch durch Melamin und dessen Derivate ersetzt werden. An Stelle von Holzmehl kann auch Zellmehl verwendet werden.They can be crushed using a suitable grinding unit, whereby the dust content remains relatively small. When making the resin solution the urea can be wholly or partially replaced by its derivatives, such as thfourea, or can be replaced by melamine and its derivatives. Instead of wood flour Cell powder can also be used.
Beispiel 3 710 Gewichtsteile Phenol-Novolak, 100 Gewichtsteile Hexamethylentetramin, 760 Gewichtsteile Holzmehl, 50 Gewichtsteile Kreide, 200 Gewichtsteile Methanol und 200 Gewichtsteile Wasser werden 10 Minuten kalt gemischt und sodann durch Einblasen auf eine Temperatur von 500 C gebracht. Example 3 710 parts by weight of phenol novolak, 100 parts by weight of hexamethylenetetramine, 760 parts by weight of wood flour, 50 parts by weight of chalk, 200 parts by weight of methanol and 200 parts by weight of water are mixed cold for 10 minutes and then by blowing brought to a temperature of 500 C.
Im Anschluß daran wird gemäß Beispiel I verfahren.Following this, as in Example I, the procedure is followed.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC10907A DE972772C (en) | 1955-03-13 | 1955-03-13 | Process for the preparation of press mixes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC10907A DE972772C (en) | 1955-03-13 | 1955-03-13 | Process for the preparation of press mixes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE972772C true DE972772C (en) | 1959-09-24 |
Family
ID=7014863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEC10907A Expired DE972772C (en) | 1955-03-13 | 1955-03-13 | Process for the preparation of press mixes |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE972772C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2143413A (en) * | 1935-10-31 | 1939-01-10 | Plaskon Co Inc | Urea resin molding composition and process of making same |
-
1955
- 1955-03-13 DE DEC10907A patent/DE972772C/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2143413A (en) * | 1935-10-31 | 1939-01-10 | Plaskon Co Inc | Urea resin molding composition and process of making same |
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