DE1796313A1 - Use of solutions of sulfite-modified melamine resins in molded calcium sulfate bodies - Google Patents

Use of solutions of sulfite-modified melamine resins in molded calcium sulfate bodies

Info

Publication number
DE1796313A1
DE1796313A1 DE19681796313 DE1796313A DE1796313A1 DE 1796313 A1 DE1796313 A1 DE 1796313A1 DE 19681796313 DE19681796313 DE 19681796313 DE 1796313 A DE1796313 A DE 1796313A DE 1796313 A1 DE1796313 A1 DE 1796313A1
Authority
DE
Germany
Prior art keywords
solutions
sulfite
calcium sulfate
melamine resins
bodies
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
Application number
DE19681796313
Other languages
German (de)
Other versions
DE1796313C3 (en
DE1796313B2 (en
Inventor
Alois Dr Aignesberger
Paul Dr Bornmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUEDDEUTSCHE KALKSTICKSTOFF-WERKE AG
Evonik Operations GmbH
Original Assignee
SUEDDEUTSCHE KALKSTICKSTOFF-WERKE AG
SKW Trostberg AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SUEDDEUTSCHE KALKSTICKSTOFF-WERKE AG, SKW Trostberg AG filed Critical SUEDDEUTSCHE KALKSTICKSTOFF-WERKE AG
Priority to DE19681796313 priority Critical patent/DE1796313C3/en
Priority claimed from DE19681796313 external-priority patent/DE1796313C3/en
Publication of DE1796313A1 publication Critical patent/DE1796313A1/en
Publication of DE1796313B2 publication Critical patent/DE1796313B2/en
Application granted granted Critical
Publication of DE1796313C3 publication Critical patent/DE1796313C3/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/16—Sulfur-containing compounds
    • C04B24/20—Sulfonated aromatic compounds
    • C04B24/22—Condensation or polymerisation products thereof

Description

Verwendung von Lösungen sulfitmodifizierter Mclaminharze in Calciumsulfatformkörpern (Ausscheidung aus Patentanmeldung P 17 ¢5 4-41.0) Die Er:lindung betrifft die Verwendung von Lösungen sul.ftmodifizierter Melaminharze zur Erhöhung der Temperaturbeständigkeit von Formkörpern aus Cal.ciiimsulfat.Use of solutions of sulfite-modified mclamine resins in calcium sulfate moldings (Exclusion from patent application P 17 [5 4-41.0) The invention relates to the use of solutions of sul.ft-modified melamine resins to increase the temperature resistance of molded bodies made of cal.ciiimsulfate.

Aus der USA-Patentschrift 2 730 516 ist ein Verfahren zur Herstellung von sulfitmodifiziertem Melaminharz bekannt. Ein weiteres Verfahren zur Herstellung von Lösungen sulfitmodifizierter Melaminlarze i.st in der. deutschen Patent: Chrift . 400 .. o (Patentanmeldung P 17 4.5 4.4.1.0) beschrieben. Nach diesen Verfahren erhält man durch Umsetzung von Formaldehyd mit Melamin und einem Alkalimetallsulfit ein nicht wärmehärtbares, wasserlösliches Harz.From US Pat. No. 2,730,516 there is a method of manufacture known from sulfite-modified melamine resin. Another method of manufacture of solutions of sulfite-modified melamine resins i.st in the. German patent: Chrift . 400 .. o (patent application P 17 4.5 4.4.1.0). According to these procedures obtained by reacting formaldehyde with melamine and an alkali metal sulfite a non-thermosetting, water-soluble resin.

Nunmehr wurde gefunden, daß derartige Lösungen von sulfitmodifiZic.rtc:n r.@el.aminharzen zur Erhöhun; der Ternperaturbeständihheit -von Formkörpern atzs Calciu;ii;ulfat verwendet werden können. Ein Zusatz von mindetens zweiwertigen Oxiden und/oder Hydroxiden zu;ir erweist sich dabei als besonders vorteilhaft. Das folgende Beispiel erliiutert die Erfindung. B e i s p i e 1 In Anlehnung an DIN 1168 (Baugipse, Fassung März 1955) wurden aus Stuckgips ja 6 Probekörper 4 x 4 x 16 cm hergestellt und bei 400C bis zuh Gewichtskonstanz getrocknet. Nach Erreichen der Gewichtshonstanz wurde bei je 3 Probekörpern die Druckfestigkeit bestimmt. Je 3 Probekörper wurden 3 Stunden bei 2000G. gelägert und anschließend die Druckfestigkeit bestimmt. Zuges. Menge Zuges. Menge Druckfestigk. Druckfestigk. Harzlsg., bez.- Hydroxid,bez. nach Erreichen nach 3stünd. auf das Gips- auf das Gips- der Gew.Konst. Behandlg-. bei 2 gewicht gewicht bei 40')C 20000 (kp/em ) (kP.lcm ) kein üueatz kein Zusatz 94 20 . 1% Ca(OH)2 . 82 34 - 1% Al(OH) 3 . 95 30 2,5,% Harzlsg.B1) kein Zusatz 162 44 2,5% " 1% Ca(OH)2 '165 76 2,5,% " 1% Al(OH) 3 171 80 5g& ## kein Zusatz 183 59 5,% " 1 % Ca(OH)2 184 121 5% " 1% Al(OH) 3 182 98 2,5% Harzlsg.A2) kein Zusatz . 132 36 295% @@ 1% Ca(OH)2 121 65 2,5,% . '@ , . 1% Al(OH) 3 125 . 67 5,% " kein Zusatz 145 49 5% " . 1% Ca(OH)2 147 102 1% Al(OH)3 151 74 1) Harzlsg. B: 16 eP. hergestellt wie im Beispiel der deutschen Patentanmeldung 2) Harolsg. A: 45 eP. P 17 45 441.0 beschrieben It has now been found that such solutions of sulfite modifiZic.rtc: n r. @ El.amine resins to increase; the Ternperaturbeständihheit -of moldings atzs calcium; ii; ulfat can be used. The addition of at least bivalent oxides and / or hydroxides has proven to be particularly advantageous. The following example illustrates the invention. B ice p y 1 according to DIN 1168 (building plasters, Version March 1955) 6 specimens were 4 x 4 x 16 cm prepared and dried at 400C to constant weight zuh from stucco yes. After constant weight had been reached, the compressive strength was determined for 3 test specimens each. 3 test specimens each were for 3 hours at 2000G. stored and then determined the compressive strength. Train. Amount of train. Amount of compressive strength Compressive strength Resin solution, related to hydroxide, related to after reaching after 3 hours. on the plaster on the plaster of the weight const. Treatment. at 2 weight weight at 40 ') C 20000 (kp / em) (kP.lcm) no üueatz no addition 94 20 . 1% Ca (OH) 2. 82 34 - 1% Al (OH) 3. 95 30 2.5% resin solution B1) no addition 162 44 2.5% "1% Ca (OH) 2 '165 76 2.5% "1% Al (OH) 3 171 80 5g &## no addition 183 59 5.1% "1% Ca (OH) 2 184 121 5% "1% Al (OH) 3 182 98 2.5% resin solution A2) no additive. 132 36 295% @@ 1% Ca (OH) 2 121 65 2.5%. '@,. 1% Al (OH) 3 125. 67 5,% "no addition 145 49 5% ". 1% Ca (OH) 2 147 102 1 % Al (OH) 3 151 74 1) Harz solution B: 16 eP. manufactured as in the example of German patent application 2) Harolsg. A: 45 eP. P 17 45 441.0

Claims (4)

PATENTANSPRÜCHE: 1.. Verwendung von Lösungen sulfitmodifizierter, nicht wärmehärtbarer I1,telaminharze zur Verbesserung der Eigenschaften voxi Formkörpern aus Calciumsulfat. PATENT CLAIMS: 1 .. Use of solutions of sulfite-modified, non-thermosetting I1, telamine resins to improve the properties of voxi moldings from calcium sulfate. 2. Verwendung von Lösungen sulfitmodifizierter, nicht wärmehärtbarer Melaminharze gemäß Patent . ... ... (Patent-r a_ureldutig P l 'i 45 441) für den Zweck von Anspruch 1. 2. Use of solutions of sulfite-modified, non-thermosetting melamine resins according to the patent. ... ... (patent r a_ureldehmen P l 'i 45 441) for the purpose of claim 1. Verwendung von Melaminharzlösungen nach Anspruch 1 oder 2 zusammen. mit mindestens zweiwertigen Oxiden und/oder Hydro;;iden für den Zweck von Anspruch 1. Use of melamine resin solutions according to claim 1 or 2 together. with at least divalent oxides and / or hydro ;; iden for the Purpose of claim 1. 4. Verwendung von.Melaminharzlösungen gemäß Anspruch 1 bis 3 mit einer Viskosität von 16 bis 45 eP. bei 200C für den Zweck von Anspruch 1.4. Use von.Melaminharzlösung according to claim 1 to 3 with a viscosity of 16 to 45 eP. at 200C for the purpose of claim 1.
DE19681796313 1968-03-11 Use of aqueous solutions of sulfite-modified, non-thermosetting melamine resins as an additive to plaster of paris Expired DE1796313C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19681796313 DE1796313C3 (en) 1968-03-11 Use of aqueous solutions of sulfite-modified, non-thermosetting melamine resins as an additive to plaster of paris

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681796313 DE1796313C3 (en) 1968-03-11 Use of aqueous solutions of sulfite-modified, non-thermosetting melamine resins as an additive to plaster of paris

Publications (3)

Publication Number Publication Date
DE1796313A1 true DE1796313A1 (en) 1972-08-10
DE1796313B2 DE1796313B2 (en) 1976-01-29
DE1796313C3 DE1796313C3 (en) 1976-09-30

Family

ID=

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3107853A1 (en) * 1981-03-02 1982-09-16 Sika AG, vorm. Kaspar Winkler & Co., 8048 Zürich Process for the preparation of highly concentrated, low-viscosity, aqueous solutions of N-modified melamine-aldehyde resins
DE3107852A1 (en) * 1981-03-02 1982-09-16 Sika AG, vorm. Kaspar Winkler & Co., 8048 Zürich METHOD FOR PRODUCING HIGH CONCENTRATED, LOW VISCOSES, AQUEOUS SOLUTIONS OF MELAMINE / ALDEHYDE RESIN

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3107853A1 (en) * 1981-03-02 1982-09-16 Sika AG, vorm. Kaspar Winkler & Co., 8048 Zürich Process for the preparation of highly concentrated, low-viscosity, aqueous solutions of N-modified melamine-aldehyde resins
DE3107852A1 (en) * 1981-03-02 1982-09-16 Sika AG, vorm. Kaspar Winkler & Co., 8048 Zürich METHOD FOR PRODUCING HIGH CONCENTRATED, LOW VISCOSES, AQUEOUS SOLUTIONS OF MELAMINE / ALDEHYDE RESIN

Also Published As

Publication number Publication date
DE1796313B2 (en) 1976-01-29

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee