CH334321A - Fire retardants - Google Patents
Fire retardantsInfo
- Publication number
- CH334321A CH334321A CH334321DA CH334321A CH 334321 A CH334321 A CH 334321A CH 334321D A CH334321D A CH 334321DA CH 334321 A CH334321 A CH 334321A
- Authority
- CH
- Switzerland
- Prior art keywords
- fire
- synthetic resin
- fire protection
- weight
- parts
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
- C09D5/185—Intumescent paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
Description
Feuerschutzmittel Feuerschutzmittel, die zum Anstreichen oder Imprägnieren von brennbaren Materia lien wie Holz, Cellulosefaserplatten, Papier, Karton oder dergleichen oder von nicht brenn baren Stoffen, wie Metall, Gips oder derglei- ehen, verwendet werden sollen und die bei Flammentemperatur eine Schutzwirkung aus üben, sind schon seit langem bekannt. Es ist ferner bekannt, für diesen Zweck Gemische zu verwenden, die aus Harzen, Stärke oder Leim und schaumbildenden Stoffen, wie phosphor sauren Salzen, Borsäure oder dergleichen be stehen. Als besonders vorteilhaft haben sieh Gemische der letzteren Art erwiesen, die <B>50-800/a</B> schaumbildender Stoffe, z. B.
Ammoniumphosphat, 10-50% eines Harn- stofformaldehydharzes, wobei bei der Bildung der Harze der Formaldehyd ganz oder zum Teil durch Formaldehyd liefernde Stoffe, wie Iiexamethylentetramin, ersetzt sein kann, und 3---0%, Kohlehydrate oder Leim enthalten. Derartige Gemische können in Pulverform, als Suspensionen in Flüssigkeiten, wie Wasser, oder ganz oder teilweise gelöst zur Anwen dung kommen.
In der Flamme bilden der artige Feuersehutzmittel einen fest zusam- menhüngenden@ pörigen kohlenstoffhaltigen Schaum, der ausgezeiehnete wärmeisolierende Wirkungen hat.
Es wurde nun gefunden, dass Feuerschutz mittel, die ein feuerhemmendes Salz, ein Klebemittel, wie Kohlenhyd7ate oder Leim, und Kunstharz enthalten, dann besonders wirksam sind, wenn das verwendete Harz ganz oder zum Teil ein Kondensationsprodukt aus <U>Harnst</U>off mit Aerolein ist. Hierbei kann das Aerolein zum Teil-ähch durch Formaldehyd ersetzt sein. Derartige Gemische bilden bei der Beflammung eine besonders feinporige Koh- lenschaumschicht, die eine nicht aufreissende, geschlossene Oberfläche hat. .
Feuerschutzmittel gemäss der Erfindung können auf verschiedenste Art hergestellt oder aufgetragen werden. Man kann in einer Lö sung oder Suspension des -Harzes, gegebenen falls in Wasser, die andern Bestandteile, das heisst das feuerhemmende Salz und das Klebe mittel, z. B. die Kohlenhydrate oder den Leim, -Fein verteilen. Ein anderer Weg zur Herstel lung des erfindungsgemässen Feuerschutz mittels besteht darin, auskondensierte Harn stoff-Acroleinharze feinzumahlen und in Pul verform mit den andern Bestandteilen zu mischen.
Derartige Mischungen können zu ihrer Verwendung in der üblichen Weise wie andere Anstrichmittel als Lösung oder Sus pension aufgetragen werden und haften nach dem Verdunsten der Flüssigkeit ausgezeichnet. auf der zu schützenden Unterlage.
Zum Vergleich der Eigenschaften eines erfindungsgemässen Feuerschutzmittels mit einem bekannten wurde folgender Vers-Lieh durchgeführt Das feuerhemmende Anstrichmittel war eine wässrige Suspension, deren Festbestand- teile au_ s 67% Monoammoniumphosphat,
8% Stärke und 25% Harz bestanden. Das Harz war in dem einen Falle ein Harnstoff-Form. aldehyd-Harz, in dem andern Falle ein Ge ntisch, das zu gleichen Teilen aus einem Harn stoff-Formaldehyd-Harz und einem Harn- stoff-Aerolein-Harz bestand.
Mit diesen Ge mischen wurden 5 mm -dicke Sperrholzplatten so bestrichen, dass auf jeden m2 300 g Fest- substanz entfielen. Nach dem Trocknen wur den die Platten mit der Anstrichseite nach unten waagrecht eingespannt und unter genau gleichen Bedingungen mittels eines Bunsen brenners beflammt. Gleichzeitig wurde auf der Oberseite jeder Platte mittels eines Thermo- elementes die Temperatur gemessen. Beim Durchbrennen der Platte wurde der Versuch abgebrochen. Die hierbei erhaltenen Werte sind in der nachstehenden Tabelle wiedergege ben.
EMI0002.0030
Fire retardants Fire retardants that are intended to be used for painting or impregnating flammable materials such as wood, cellulose fiber boards, paper, cardboard or the like or of non-flammable materials such as metal, plaster of paris or the like, and which exert a protective effect at flame temperature, have been known for a long time. It is also known to use mixtures for this purpose, which are made of resins, starch or glue and foam-forming substances, such as phosphoric acid salts, boric acid or the like. Mixtures of the latter type which contain <B> 50-800 / a </B> foam-forming substances, e.g. B.
Ammonium phosphate, 10-50% of a urea-formaldehyde resin, with the formaldehyde being wholly or partly replaced by formaldehyde-yielding substances such as iiexamethylenetetramine, and 3-0%, carbohydrates or glue. Mixtures of this type can be used in powder form, as suspensions in liquids, such as water, or completely or partially dissolved.
In the flame, this type of fire retardant forms a tightly cohesive, porous carbon-containing foam that has excellent heat-insulating effects.
It has now been found that fire protection agents which contain a fire-retardant salt, an adhesive such as carbohydrates or glue, and synthetic resin are particularly effective when the resin used is wholly or partly a condensation product of urine is off with Aerolein. Here, the aerolein can be partially replaced by formaldehyde. When the flame is applied, such mixtures form a particularly fine-pored carbon foam layer which has a non-tearing, closed surface. .
Fire protection agents according to the invention can be produced or applied in a wide variety of ways. You can in a solution or suspension of the resin, if necessary in water, the other ingredients, that is, the fire retardant salt and the adhesive medium, z. B. the carbohydrates or the glue, fine distribute. Another way of producing the fire protection means according to the invention is to finely grind condensed urea acrolein resins and mix them in powder form with the other ingredients.
Such mixtures can be applied to their use in the usual manner like other paints as a solution or suspension and adhere excellently after the liquid has evaporated. on the surface to be protected.
To compare the properties of a fire retardant according to the invention with a known one, the following verse was carried out. The fire-retardant paint was an aqueous suspension, the solid constituents of which consisted of 67% monoammonium phosphate,
8% starch and 25% resin passed. In one case the resin was in the form of urea. aldehyde resin, in the other case a mixture consisting in equal parts of a urea-formaldehyde resin and a urea-aerolein resin.
With these mixtures, 5 mm thick plywood panels were coated in such a way that 300 g of solid substance was added to each m2. After drying, the panels were clamped horizontally with the coated side facing down and exposed to a flame using a Bunsen burner under exactly the same conditions. At the same time, the temperature was measured on the top of each plate by means of a thermocouple. The experiment was terminated when the plate was burned through. The values obtained here are shown in the table below.
EMI0002.0030
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED16611A DE962824C (en) | 1953-12-20 | 1953-12-20 | Fire retardants |
Publications (1)
Publication Number | Publication Date |
---|---|
CH334321A true CH334321A (en) | 1958-11-30 |
Family
ID=7035412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH334321D CH334321A (en) | 1953-12-20 | 1954-10-26 | Fire retardants |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE532663A (en) |
CH (1) | CH334321A (en) |
DE (1) | DE962824C (en) |
NL (1) | NL87282C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1205694B (en) * | 1959-02-07 | 1965-11-25 | British Plimber Ltd | Process for the production of flame-retardant chipboard |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4374240A (en) * | 1980-12-22 | 1983-02-15 | Monsanto Company | Polymer compositions comprising hemiacetals of adducts of acrolein and isocyanuric acid |
US4293693A (en) | 1980-12-22 | 1981-10-06 | Monsanto Company | Hemiacetals of adducts of acrolein and isocyanuric acid |
US4326057A (en) | 1980-12-22 | 1982-04-20 | Monsanto Company | Adducts of acrolein and isocyanuric acid |
US4321375A (en) | 1980-12-22 | 1982-03-23 | Monsanto Company | Acetals of adducts of acrolein and isocyanuric acid |
US4375537A (en) * | 1980-12-22 | 1983-03-01 | Monsanto Company | Polymer compositions comprising acetals of adducts of acrolein and isocyanuric acid |
US4375538A (en) * | 1980-12-22 | 1983-03-01 | Monsanto Company | Polymer compositions comprising adducts of acrolein and isocyanuric acid |
AT399148B (en) * | 1993-06-28 | 1995-03-27 | Chemie Linz Gmbh | FIRE PROTECTIVE BRICK |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2523626A (en) * | 1948-08-20 | 1950-09-26 | Albi Mfg Co Inc | Fire-retardant composition and process |
-
0
- NL NL87282D patent/NL87282C/xx active
- BE BE532663D patent/BE532663A/fr unknown
-
1953
- 1953-12-20 DE DED16611A patent/DE962824C/en not_active Expired
-
1954
- 1954-10-26 CH CH334321D patent/CH334321A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1205694B (en) * | 1959-02-07 | 1965-11-25 | British Plimber Ltd | Process for the production of flame-retardant chipboard |
Also Published As
Publication number | Publication date |
---|---|
DE962824C (en) | 1957-04-25 |
NL87282C (en) | |
BE532663A (en) |
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