EP0033391A1 - Procédé de fabrication de produits résistant aux inflammations ou incombustibles basés sur des matériaux fibreux - Google Patents
Procédé de fabrication de produits résistant aux inflammations ou incombustibles basés sur des matériaux fibreux Download PDFInfo
- Publication number
- EP0033391A1 EP0033391A1 EP80108159A EP80108159A EP0033391A1 EP 0033391 A1 EP0033391 A1 EP 0033391A1 EP 80108159 A EP80108159 A EP 80108159A EP 80108159 A EP80108159 A EP 80108159A EP 0033391 A1 EP0033391 A1 EP 0033391A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fiber
- pulp
- added
- materials
- minerals
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000002657 fibrous material Substances 0.000 title claims abstract description 17
- 239000003063 flame retardant Substances 0.000 title claims abstract description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 35
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 31
- 239000011707 mineral Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 21
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052796 boron Inorganic materials 0.000 claims abstract description 15
- 239000010440 gypsum Substances 0.000 claims abstract description 15
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 11
- 230000005070 ripening Effects 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 4
- 239000011368 organic material Substances 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 7
- 239000004327 boric acid Substances 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000010454 slate Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 239000010455 vermiculite Substances 0.000 claims description 2
- 229910052902 vermiculite Inorganic materials 0.000 claims description 2
- 235000019354 vermiculite Nutrition 0.000 claims description 2
- 239000011505 plaster Substances 0.000 claims 1
- 239000011111 cardboard Substances 0.000 abstract description 7
- 239000000123 paper Substances 0.000 abstract description 6
- 239000011094 fiberboard Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 18
- 239000000047 product Substances 0.000 description 11
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 241000294754 Macroptilium atropurpureum Species 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 5
- 229910021540 colemanite Inorganic materials 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000011814 protection agent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 239000011093 chipboard Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000010751 BS 2869 Class A2 Substances 0.000 description 1
- 235000019687 Lamb Nutrition 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229940064582 akten Drugs 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- YECIFGHRMFEPJK-UHFFFAOYSA-N lidocaine hydrochloride monohydrate Chemical compound O.[Cl-].CC[NH+](CC)CC(=O)NC1=C(C)C=CC=C1C YECIFGHRMFEPJK-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 235000021395 porridge Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/34—Ignifugeants
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/0002—Flame-resistant papers; (complex) compositions rendering paper fire-resistant
Definitions
- the object of the invention is therefore to introduce such fire retardants, in particular boric acid, into the products to be formed from fibrous materials, without having to give up the proven and economically feasible wet process in the manufacture of the fiber materials.
- German patent application P 28 31 616.7 specifies a process for producing a non-combustible material made from mineral substances, in which a solid is produced using residual sewage sludge and / or moist wood cutting chips by adding boron minerals to these raw materials. These boron minerals are mixed with sulfuric acid and the resulting mixture is then glued with a plastic resin and hot pressed.
- This material which can be obtained in this way, has similar material properties to chipboard, but is non-combustible due to the proportion of boric acid contained in it and at least partially glass- or ceramic-forming minerals.
- the relationship of this well-known material to chipboard is also evident in the way it is manufactured, which is identical to the manufacture of chipboard except for the preparation of fire protection agents.
- the starting materials are therefore practically dry or at most have a moisture content of up to 25%.
- the products covered by the invention are to be produced in the wet process on suction filters, paper machines - Fourdrinier or circular sieve machines - the aqueous starting suspension should have a solids content of only 0.5% to a maximum of 5% for the dewatering machine used .
- the dry introduction of powdery, water-insoluble fire protection materials is still possible, so this is ruled out in the production of the products mentioned, which correspond to cardboard, cardboard or fiberboard.
- the invention is intended to make use of this proven method of converting boron minerals into boric acid, since the use of this method not only promises to achieve good fire protection, but also because it is very economical.
- a further consideration when using this known method is that it should be possible, in the combination of the known wet process for the production of paper, cardboard, cardboard and fiberboard with the known process for the dry production of fire-protected materials, to produce fiber-reinforced gypsum boards which have good strength properties with a low swelling rate and low water absorption.
- Such gypsum boards are particularly needed for dry interior finishing and plastering of walls, since they not only have good properties that improve the indoor climate and can be nailed by the fiber reinforcement and have sufficient strengths that determine their utility value, but also easy to assemble and, when using the invention Process, should also be economically producible. Fire protection would of course also be of great importance here, since this protection must be required for the interior lining of rooms.
- the invention it is possible to produce flame-retardant or non-flammable products based on fibrous materials in an economical manner by treating the fibrous materials into an aqueous slurry tet and this porridge boron minerals and mineral acid are intimately admixed and that the mixture thus formed is fed to a nonwoven and fiber dewatering machine after a ripening period, dewatered and then dried.
- Organic fibers which are inexpensive and partly available as waste products, are generally used as fibrous materials. However, it is also possible to use non-organic fibers, such as mineral fibers (asbestos), glass fibers (staple fibers) or plastic fibers.
- non-organic fibers such as mineral fibers (asbestos), glass fibers (staple fibers) or plastic fibers.
- the mineral acid is expediently added in a stoichiometric ratio. It can be added in such an amount that the mixture immediately after adding the mineral acid reaches a pH between 1.5 and 3.0, preferably 2.0. A tendency towards neutralization can be achieved when the process is carried out by extending the ripening time after addition of the mineral acid.
- the mineral acid used is expediently sulfuric acid, with the aid of which not only the calcium sulfate formation already discussed can take place, but which is also very inexpensively available as waste acid.
- Example 2 To produce a fiber-reinforced gypsum board, 225 kg of wood pulp or defibrator material or a mixture of the two are introduced into a Dutchman and brought into a fiber suspension with 5% solids content with production water. Then 480 kg of colemanite (approx. 45% boron content) are added and mixed until a homogeneous mixture is obtained. 235 kg of sulfuric acid are then slowly mixed in, the pH of the acidified mixture not being below 2.0, but also not above 2.8. This mixture matures in the subsequent storage chest, the pH increasing to 4.5 to 4.8. The fiber mixture is then further processed like a fiber insulation board, but the end product is to be addressed as a reinforced gypsum board.
- the boric acid content of the gypsum board in the case of circulating production water is about 26% by weight in the end product, that is to say the product is therefore non-combustible in the sense of DIN 4102, Class A2 is.
- the gypsum board when carrying out the process, it is possible to add the gypsum, which has been made with production water, to the matured pulp. The drainage is then carried out on a known drainage machine suitable for this purpose.
- the Endergeb- 2 is is has definitely a reinforced gypsum board, which is not only protected against fire or combustible and benerkenshong strength properties.
- Example 3 The same batch of material as in Example 1 is used to produce a fire-resistant hardboard. Before the finished fiber-colemanite-sulfuric acid mixture from the Dutch or a mixing chest expires, 0.5 to 2% of an acid-curing synthetic resin is added. After leaving the dewatering machine, the nonwovens are dewatered in a press and pressed to form a hardboard, which receives the usual strength through the connection of the fiber under pressure and heat and is also fire-protected.
- Example 4 For the production of flame-retardant fiber insulation boards which are to be subsequently processed into shaped bodies, a fiber suspension according to Example 1 must first be produced in a Dutchman or a mixing chest. After the mixture ripened, the pH rose to about 5.0. Now at least 20 parts by weight of a precipitable thermoplastic in powder or dispersion form are added to the pulp and fixed on the fibers by the usual precipitation process. It is advisable to choose a plastic containing plasticizer. The fiber pulp is then further processed into fiber insulation panels as described in Example 1. The finished fiber lamb board can now be pressed under pressure and heat in a mold made of a matrix and a male mold to a shaped body.
- the fibrous material should have a solids content of approximately 5% by weight.
- Fresh water and later the wastewater from the rotary or Fourdrinier machine from the production of such paper is used for the pulp.
- the fiber / colemanite mixture is then acidified to a pH of 2.0 to 2.5 by slowly adding 117 kg of sulfuric acid.
- the mixture should then ripen for at least one hour and is then processed as usual. Until this processing, the pH rose to about 4.5.
- the end product is a solid, non-flammable paper.
- Fresh water and, after the start of production, the return water from the suction section of the Fourdrinier machine are used to produce the pulp.
- the solids content should be 5%.
- the pulp is now 240 kg Cdlemanite (approx. 45% boron content) mixed in homogeneously.
- 117 kg of concentrated or the corresponding amount of dilute sulfuric acid are slowly added to the circulating fiber pulp and mixed until the mixture is homogeneous and has a pH of 2.0 to 2. 5 has reached.
- the fabric can mature in the storage chest; the pH then rose to about 4.5 to 4.8.
- the mixture is brought to the required level of processing in the machine chest.
- the processing of the fiber ice takes place as usual. The result is a solid box that is no longer flammable.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Producing Shaped Articles From Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Multicomponent Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Nonwoven Fabrics (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3003371 | 1980-01-31 | ||
| DE19803003371 DE3003371A1 (de) | 1980-01-31 | 1980-01-31 | Faserwerkstoff |
| DE19803020033 DE3020033C2 (de) | 1980-05-24 | 1980-05-24 | Verfahren zum Herstellen schwer entflammbarer oder nicht brennbarer Produkte auf der Basis fasriger Materialien |
| DE3020033 | 1980-05-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0033391A1 true EP0033391A1 (fr) | 1981-08-12 |
| EP0033391B1 EP0033391B1 (fr) | 1983-10-12 |
Family
ID=25783451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80108159A Expired EP0033391B1 (fr) | 1980-01-31 | 1980-12-23 | Procédé de fabrication de produits résistant aux inflammations ou incombustibles basés sur des matériaux fibreux |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4352719A (fr) |
| EP (1) | EP0033391B1 (fr) |
| CA (1) | CA1147911A (fr) |
| FI (1) | FI69161C (fr) |
| NO (1) | NO810285L (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT386378B (de) * | 1983-12-24 | 1988-08-10 | Kunnemeyer Hornitex | Verfahren zur herstellung brandgeschuetzter spanplatten und holzspanformteile |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3110864C2 (de) * | 1981-03-20 | 1984-10-04 | Alfons K. 7513 Stutensee Herr | Verfahren zur Herstellung eines asbestfreien Baumaterials |
| DE4324764A1 (de) * | 1993-07-23 | 1995-01-26 | Hans Herberger | Bauelement |
| US6409824B1 (en) | 2000-04-25 | 2002-06-25 | United States Gypsum Company | Gypsum compositions with enhanced resistance to permanent deformation |
| US7163974B2 (en) * | 2000-05-14 | 2007-01-16 | U.S. Borax Inc. | Lignocellulosic composites |
| WO2002006417A1 (fr) * | 2000-07-17 | 2002-01-24 | U.S. Borax Inc. | Composition de conservation a base de borates a faible solubilite ou a solubilite elevee |
| US6368529B1 (en) | 2000-05-14 | 2002-04-09 | U.S. Borax Inc. | Lignocellulosic composite |
| US6716310B2 (en) * | 2001-12-31 | 2004-04-06 | Kimberly-Clark Worldwide, Inc. | Process for manufacturing a cellulosic paper product exhibiting reduced malodor |
| US20050037221A1 (en) * | 2002-07-31 | 2005-02-17 | Fox Roger F. | Penetration improvement of copper amine solutions into dried wood by addition of carbon dioxide |
| CN101338534B (zh) * | 2007-07-03 | 2010-11-17 | 山西鑫秀工矿废渣利用有限公司 | 一种工业尾矿或固废物纤维纸浆及其为原料的造纸方法 |
| CA2794568C (fr) * | 2010-03-26 | 2014-06-10 | Blmh Technologies Inc. | Procede de formation d'un produit a base de cellulose resistant au feu et appareil associe |
| US8323785B2 (en) | 2011-02-25 | 2012-12-04 | United States Gypsum Company | Lightweight, reduced density fire rated gypsum panels |
| MX2014009534A (es) | 2012-02-17 | 2014-10-13 | United States Gypsum Co | Productos de yeso con aditivos disipadores de calor de alta eficiencia. |
| US12139438B2 (en) | 2019-06-06 | 2024-11-12 | Eco Boron LLC | Fire resistant compositions and articles and methods of preparation and use thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1025188A (en) * | 1964-03-06 | 1966-04-06 | Celotex Ltd | Improvements in or relating to fibre building board |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE354544C (de) | 1920-12-23 | 1922-06-09 | Kurt Joost Dr Ing | Verfahren zum Fuellen von Papier im Hollaender |
| DE947777C (de) | 1953-01-30 | 1956-08-23 | Spanitbolaget Torstensson & Co | Verfahren zur Behandlung von Holzabfall zwecks Verwendung zusammen mit hydraulischen Bindemitteln zur Herstellung von Baumaterialien |
| CH354321A (de) | 1956-04-13 | 1961-05-15 | Borax Cons Ltd | Verfahren zur Herstellung von feuerfestem Papier oder Karton |
| US2935471A (en) * | 1958-09-10 | 1960-05-03 | Du Pont | Flame retardant composition |
| DE1812825U (de) | 1960-03-28 | 1960-06-09 | Hartmann & Co W | Metallfenster. |
| US3202570A (en) * | 1961-06-12 | 1965-08-24 | Wood Conversion Co | Method of forming a fiberboard containing a fire-retardant hydrated borate and product thereof |
| US3380842A (en) * | 1963-09-20 | 1968-04-30 | Georgia Pacific Corp | Decorative composition and a process for its use |
| US3453160A (en) * | 1963-11-12 | 1969-07-01 | Kaiser Gypsum Co | Process for making structural gypsum board for neutron shielding |
| US3379608A (en) * | 1964-01-16 | 1968-04-23 | United States Gypsum Co | Water-felted mineral wool building and insulation product including nonfibrous cellulose binder |
| US3438847A (en) * | 1965-02-26 | 1969-04-15 | Weyerhaeuser Co | Process of treating composite boards with borate chemicals produced thereby and product |
| GB1261134A (en) | 1969-11-05 | 1972-01-19 | Ch Traktorny Zd | Directional control valves for the power cylinders of operating elements of machines |
| FR2160810A1 (fr) | 1971-11-22 | 1973-07-06 | United States Gypsum Co | |
| US3988199A (en) * | 1975-01-27 | 1976-10-26 | Johns-Manville Corporation | Perlite insulation board and method of making the same |
| US3983040A (en) * | 1975-08-07 | 1976-09-28 | Draganov Samuel M | Fire-retardant composition and process of producing same |
| DE2621739C2 (de) | 1976-05-15 | 1985-10-03 | Chemische Fabrik Kalk GmbH, 5000 Köln | Verfahren zur Herstellung einer Flammschutzkomponente für Holzspanplatten |
| US4168175A (en) * | 1978-04-26 | 1979-09-18 | Vitrofil Corporation | Fire retardant compositions |
| DE2831633C2 (de) * | 1978-07-19 | 1984-08-09 | Kataflox Patentverwaltungs-Gesellschaft mbH, 7500 Karlsruhe | Verfahren zur Herstellung eines Brandschutzmittels |
| DE2831616C2 (de) * | 1978-07-19 | 1984-08-09 | Kataflox Patentverwaltungs-Gesellschaft mbH, 7500 Karlsruhe | Verfahren zum Herstellen eines nicht brennbaren Formkörpers |
| US4173666A (en) * | 1978-09-11 | 1979-11-06 | Quinto Mario J | Flame resistant cellulose fiber insulation and process of preparing it |
-
1980
- 1980-12-23 EP EP80108159A patent/EP0033391B1/fr not_active Expired
-
1981
- 1981-01-28 FI FI810244A patent/FI69161C/fi not_active IP Right Cessation
- 1981-01-28 NO NO810285A patent/NO810285L/no unknown
- 1981-01-30 CA CA000369769A patent/CA1147911A/fr not_active Expired
- 1981-02-02 US US06/230,506 patent/US4352719A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1025188A (en) * | 1964-03-06 | 1966-04-06 | Celotex Ltd | Improvements in or relating to fibre building board |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT386378B (de) * | 1983-12-24 | 1988-08-10 | Kunnemeyer Hornitex | Verfahren zur herstellung brandgeschuetzter spanplatten und holzspanformteile |
Also Published As
| Publication number | Publication date |
|---|---|
| FI810244L (fi) | 1981-08-01 |
| US4352719A (en) | 1982-10-05 |
| EP0033391B1 (fr) | 1983-10-12 |
| FI69161B (fi) | 1985-08-30 |
| NO810285L (no) | 1981-08-03 |
| CA1147911A (fr) | 1983-06-14 |
| FI69161C (fi) | 1985-12-10 |
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