SE455790B - MODIFICANT ADDED IN THE BINDING AGENT OF CONDENSATION PRODUCTS OF FORMAL SKIN AND UREA, MELAMIN OR PHENOL OR MIXTURES OF THESE - Google Patents

MODIFICANT ADDED IN THE BINDING AGENT OF CONDENSATION PRODUCTS OF FORMAL SKIN AND UREA, MELAMIN OR PHENOL OR MIXTURES OF THESE

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Publication number
SE455790B
SE455790B SE8204599A SE8204599A SE455790B SE 455790 B SE455790 B SE 455790B SE 8204599 A SE8204599 A SE 8204599A SE 8204599 A SE8204599 A SE 8204599A SE 455790 B SE455790 B SE 455790B
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SE
Sweden
Prior art keywords
weight
pentaerythritol
dipentaerythritol
urea
phenol
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SE8204599A
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Swedish (sv)
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SE8204599L (en
Inventor
I C Holmqvist
P Kornfeldt
K A Nolin
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Perstorp Ab
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20347492&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE455790(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to SE8204599A priority Critical patent/SE455790B/en
Application filed by Perstorp Ab filed Critical Perstorp Ab
Priority to AT83103966T priority patent/ATE23868T1/en
Priority to DE8383103966T priority patent/DE3367926D1/en
Priority to EP83103966A priority patent/EP0100816B1/en
Priority to BR8302449A priority patent/BR8302449A/en
Priority to FI832010A priority patent/FI76107C/en
Priority to ES523154A priority patent/ES523154A0/en
Priority to NO832805A priority patent/NO158813C/en
Priority to JP58144339A priority patent/JPS5956470A/en
Publication of SE8204599L publication Critical patent/SE8204599L/en
Publication of SE455790B publication Critical patent/SE455790B/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/40—Chemically modified polycondensates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
    • C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
    • C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
    • C08G14/12—Chemically modified polycondensates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/28—Chemically modified polycondensates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds

Abstract

1. Claims for the Contracting States : DE, FR, GB, IT, NL, SE Modifying agent for addition to a binder that is synthesized from a condensation product of (a) formaldehyde and (b) urea, melamine or phenol or a mixture of two or three of these components, characterized in that the modifying agent contains formals of pentaerythritol and dipentaerythritol, methylethers of pentaerythritol and dipentaerythritol and free pentaerythritol. 1. Claims for the Contracting State : AT Use of a modifying agent that contains formals of pentaerythritol and dipentaerythritol, methylethers of pentaerythritol and dipentaerythritol and free pentaerythritol, as a modifying agent for addition to a binder that is synthesized from a condensation product of (a) formaldehyde and (b) urea, melamine or phenol or a mixture of two or three of these components.

Description

455 790 en låg fukthalt vid användning av ett anpassat temperaturförlopp. 455 790 a low moisture content when using an adapted temperature course.

Minskas formningstrycket måste andra, flytningspåverkande faktorer ändras i syfte att bibehålla flytningseffekten.If the forming pressure is reduced, other, flow-influencing factors must be changed in order to maintain the flow effect.

Formningsförfarandet vid tillverkning av laminerade produkter utföres traditionellt på två olika sätt. Enligt det ena införes materialet i en kall press, varpå trycket höjs och värme tillföres. Därefter sänks temperaturen och trycket släpps. Enligt det andra sättet matas materialet till en varm press, varefter trycket höjs för att slutligen släppas utan kylning. Båda förfaringssätten innebär en kompression och formning av materialet samt en smältning och härdning av bindemedlet.The molding process in the manufacture of laminated products is traditionally performed in two different ways. According to one, the material is introduced into a cold press, whereupon the pressure is raised and heat is applied. Then the temperature is lowered and the pressure is released. According to the second method, the material is fed to a hot press, after which the pressure is raised to finally be released without cooling. Both methods involve a compression and shaping of the material as well as a melting and curing of the binder.

Metoden för tillverkning av en färdigprodukt utan kylning innebär stora ekonomiska fördelar jämfört med den förstnämnda metoden, dels genom mindre energiåtgång, dels genom stora tidsvinster.The method for manufacturing a finished product without cooling entails great economic advantages compared with the first-mentioned method, partly through less energy consumption and partly through large time savings.

Under den senaste tiden har det skett en teknisk utveckling från statiska laminatpressar som arbetar pulsvis till kontinuerligt arbetande bandpressar för tillverkning av plana härdplastlaminat.Recently, there has been a technical development from static laminate presses that work in pulses to continuously operating belt presses for the production of flat hardened plastic laminates.

De kontinuerligt arbetande bandpressarna för laminat arbetar oftast med betydligt lägre tryck, ca 10-25 bar jämfört med 100 bar och med kortare presstider, ca l/30-1/300-del av presstiden för en statisk press med kylning.The continuously operating belt presses for laminate usually work with significantly lower pressures, approx. 10-25 bar compared with 100 bar and with shorter pressing times, approx. 1 / 30-1 / 300th of the pressing time for a static press with cooling.

Jämfört med en konventionell presscykel med kylning i en statisk press erfordras vid en kontinuerlig press en betydligt bättre flytning och en väsentligt högre reaktivitet på bindemedlet.Compared to a conventional press cycle with cooling in a static press, a continuous press requires a significantly better flow and a significantly higher reactivity on the binder.

Dessa två egenskaper står i motsatsförhâllande till varandra. Den snabba molekylviktsökningen förkortar nämligen flyttiden. En metod för att lösa detta problem är att öka bindemedelshalten i förhållande till armeringsmedlet samt att öka fukthalten i materialet innan detta formas och härdas. Det förfarandet ger dock onödigt höga kostnader och färdigprodukten får ogynnsamma egenskaper, bl.a. en stor sprödhet.These two properties are in opposition to each other. The rapid increase in molecular weight shortens the moving time. One method of solving this problem is to increase the binder content relative to the reinforcing agent and to increase the moisture content of the material before it is formed and cured. However, this procedure entails unnecessarily high costs and the finished product acquires unfavorable properties, e.g. a large brittleness.

Genom föreliggande uppfinning har man kunnat lösa ovanstående problem och åstadkommit ett modifieringsmedel avsett som tillsats 455 790 i bindemedel baserade på en kondensationsprodukt av a) formaldehyd och b) urea, melamin eller fenol eller en blandning av två eller tre av dessa. Modifieringsmedlet kännetecknas av att det består av en genom basisk reaktion mellan formaldehyd och acetaldehyd i ett molförhållande av 3-6:1 erhållen blandning av olika hydroxylgruppsinnehållande reaktionsprodukter, vars hydroxylgrupper i betydande omfattning är företrade, innefattande formaler av pentaerytritol och dipentaerytritol, metyletrar av pentaerytritol eller dipentaerytritol samt fri pentaerytritol.The present invention has been able to solve the above problems and provide a modifier intended as an additive 455 790 in binders based on a condensation product of a) formaldehyde and b) urea, melamine or phenol or a mixture of two or three of these. The modifier is characterized in that it consists of a mixture of various hydroxyl group-containing reaction products obtained by a basic reaction between formaldehyde and acetaldehyde in a molar ratio of 3-6: 1, the hydroxyl groups of which are significantly etherified, including formulas of pentaerythritol and dipentaerythritol, methyl ethers dipentaerythritol and free pentaerythritol.

Bindemedlet kan utgöras av melamin-formaldehydharts, urea- formaldehydharts, fenol-formaldehydharts, urea-melamin-formalde- hydharts, urea-fenol-formaldehydharts, melamin-fenol-formalde- hydharts eller urea-melamin-fenol-formaldehydharts. Dessa hartser kan även innehålla bl.a. toluensulfonamid, laktamer, guanaminer, amider, aminer eller andra tillsatser som förbättrar hartsernas egenskaper. Hartserna tillverkas enligt välkända och i fack- litteraturen beskrivna metoder.The binder may be melamine-formaldehyde resin, urea-formaldehyde resin, phenol-formaldehyde resin, urea-melamine-formaldehyde resin, urea-phenol-formaldehyde resin, melamine-phenol-formaldehyde resin or urea-melamine-phenol-formaldehyde resin. These resins may also contain e.g. toluenesulfonamide, lactams, guanamines, amides, amines or other additives which improve the properties of the resins. The resins are manufactured according to methods well known and described in the professional literature.

Enligt en utföringsform av uppfinningen innehåller modifieringa- medlet 30-70 víktprocent av en blandning av formaler av penta- erytritol och dipentaerytrítol, 5-35 viktprocent av en blandning av metyletrar av pentaerytritol och dipentaerytritol samt 0,5 -15 viktprocent fri pentaerytritol, varvid resten utgöres av bland annat olika aldolkondensationsprodukter.According to one embodiment of the invention, the modifier contains 30-70% by weight of a mixture of formulas of pentaerythritol and dipentaerythritol, 5-35% by weight of a mixture of methyl ethers of pentaerythritol and dipentaerythritol and 0.5-15% by weight of free pentaerythritol, the remainder consists of, among other things, various aldol condensation products.

Modifieringsmedlet kan tillföras bindemedlet före, under eller efter syntesen av bindemedlet.The modifier may be added to the binder before, during or after the synthesis of the binder.

Vid användningen av bindemedlet för impregnering av kontinuerliga banor av fibermaterial såsom papper tillsättes en hårdare till bindemedlet.When using the binder to impregnate continuous webs of fibrous material such as paper, a harder one is added to the binder.

Uppfinningen förklaras närmare i anslutning till nedanstående utföringsexempel, varav exempel l visar framställning av ett urea-fenol-formaldehydharts innehållande ett modifieringsmedel enligt uppfinningen samt användning av hartset för tillverkning av ett dekorativt högtryckslaminat. Exempel 2 visar framställ- ning av ett melamin-formaldehydharts i vilket ett modifierings- 455 790 -4- medel enligt uppfinningen inblandats samt hartsets användning för kontinuerlig laminattillverkning. Exempel 3 visar fram- ställning av ett melamin-formaldehydharts som samkondenserats med ett modifieringsmedel enligt uppfinningen samt hartsets användning för kontinuerlig laminattillverkning. Exempel 4 slutligen visar framställning av ett urea-melamin-formaldehyd- harts som samkondenserats med ett modifieringsmedel enligt upp- finningen samt hartsets användning för kontinuerlig laminattill- verkning.The invention is explained in more detail in connection with the following exemplary embodiments, of which Example 1 shows the preparation of a urea-phenol-formaldehyde resin containing a modifier according to the invention and the use of the resin for the manufacture of a decorative high-pressure laminate. Example 2 shows the preparation of a melamine-formaldehyde resin in which a modifier according to the invention has been mixed and the use of the resin for continuous laminate production. Example 3 shows the preparation of a melamine-formaldehyde resin co-condensed with a modifier according to the invention and the use of the resin for continuous laminate production. Finally, Example 4 shows the preparation of a urea-melamine-formaldehyde resin co-condensed with a modifier according to the invention and the use of the resin for continuous laminate production.

Exempel l 53,11 viktdelar 50-procentig formalin, 38,86 viktdelar fenol samt 7,23 viktdelar av ett modifieringsmedel enligt uppfinningen bestående av Formaler av monopentaerytritol och dipentaerytritol 45 Olika aldolkondensationsprodukter 24 viktprocent viktprocent Metyletrar av monopentaerytritol och dipentaerytri- ÜOI 14 viktprocent Fri pentaerytritol 7 viktprocent Nâtriumfmimíafi 0,5 vïktprqcent Övrigt 9,5 viktprocent satsades'i ett reaktionskärl. 'e pH justerades till ca 7,5 och blandningen värmdes till återlopp.Example 1 53.11 parts by weight of 50% formalin, 38.86 parts by weight of phenol and 7.23 parts by weight of a modifier according to the invention consisting of Formulas of monopentaerythritol and dipentaerythritol 45 Different aldol condensation products 24% by weight Methyl ethers of monopentaerythritol and dipentaerythritol% 7% by weight Sodium film fi 0.5% by weight Other 9.5% by weight was charged to a reaction vessel. The pH was adjusted to about 7.5 and the mixture was heated to reflux.

~Natriumhydroxid satsades kontinuerligt vid âterlopp under ca 35 minuter. Blandningen kyldes därefter, varpå ytterligare natrium- hydroxid satsades. Totalt tillsattes l,# viktprocent natrium- hydroxid räknat på fenol. 16,81 viktdelar vatten destillerades av under vakuum vid ca 60° C.Sodium hydroxide was charged continuously at reflux for about 35 minutes. The mixture was then cooled, after which additional sodium hydroxide was charged. A total of 1% by weight of sodium hydroxide based on phenol was added. 16.81 parts by weight of water were distilled off under vacuum at about 60 ° C.

Därefter satsades 5,0 viktdelar metanol och 7,84 viktdelar urea vid 600 C. När urean lösts, kyldes reaktionsblandningen.Then 5.0 parts by weight of methanol and 7.84 parts by weight of urea were charged at 600 DEG C. When the urea was dissolved, the reaction mixture was cooled.

Det framställda vattenlösta hartset hade följande egenskaper. -s- ~ 455 790 Torrhalt: 55 % Vískositet: 130 C P nH= 6,4 Härdn1nestid= iso sekunder vid 1so° c (stroke cure time) Kraftpapper med en ytvikt av 150 g/m2 impregnerades med hartsiös- ningen till 28 procent hartshalt och 7 % härdningsförlust. Fem stycken sådana ímpregnerade kraftpappersark samt två stycken ytark av papper med dekorativ funktion impregnerade med melamin- harts pressades till ett laminat i en konventionell högtrycks- press. Ett tillfredsställande laminat godkänt enligt ISO-norm 4586 erhölls.The prepared anhydrous resin had the following properties. -s- ~ 455 790 Dry content: 55% Viscosity: 130 CP nH = 6.4 Curing time = iso seconds at 1so ° c (stroke cure time) Kraft paper with a basis weight of 150 g / m2 was impregnated with the resin solution to 28 percent resin content and 7% cure loss. Five such impregnated kraft paper sheets and two surface sheets of paper with a decorative function impregnated with melamine resin were pressed into a laminate in a conventional high-pressure press. A satisfactory laminate approved according to ISO standard 4586 was obtained.

Exemgel 2 25,5 viktdelar 50-procentig formalin, 24,5 viktdelar vatten, 0,6 viktdelar tríetanolamin, 1,3 viktdelar toluensulfonamid och 29,2 viktdelar melamin satsade: i ett reaktionskärl. pH justerades till 9,7 och blandningen värmdes till återlopp.Example 2 2 25.5 parts by weight of 50% formalin, 24.5 parts by weight of water, 0.6 parts by weight of triethanolamine, 1.3 parts by weight of toluenesulfonamide and 29.2 parts by weight of melamine charged: in a reaction vessel. The pH was adjusted to 9.7 and the mixture was heated to reflux.

Efter l0 minuter vid återlopp kyldes blandningen till 90° C, varefter reaktionen fick fortsätta tills fällning uppstod, då 1,9 ml vatten sattes till l g lackprov vid 250 C. Sedan kyldes reaktionsblandningen till rumstemperatur, varefter 8,9 viktdelar av ett modifieringsmedel enligt uppfinningen bestående av .i Natriumformiat 0,2 viktprocent Fri pentaerytritol 6,8 viktprocent Formaler av monopentaerytritol och dipenta- erytritol 46,1 viktprocent Fri dipentaerytritol 1,0 viktprocent Metyletrar av monopentaerytritol och di- pentaerytritol 14,4 viktprocent Halvfoímaler 2,3 viktprocent Andra aldolkondensationsprodukter 27,2 viktprocent vatten 2,0 viktprocent tillsattes. 455 79Û -6- Det framställda vattenlösta hartset hade följande egenskaper.After 10 minutes at reflux, the mixture was cooled to 90 ° C, after which the reaction was allowed to proceed until precipitation occurred, when 1.9 ml of water was added to 1 lacquer sample at 250 DEG C. Then the reaction mixture was cooled to room temperature, after which 8.9 parts by weight of a modifier according to the invention consisting of .i Sodium formate 0.2% by weight Free pentaerythritol 6.8% by weight Formulations of monopentaerythritol and dipentaerythritol 46.1% by weight Free dipentaerythritol 1.0% by weight Methyl ethers of monopentaerythritol and dipentaerythritol 14.4% by weight Semi-foals 27.2% by weight of water 2.0% by weight was added. 455 79Û -6- The prepared anhydrous resin had the following properties.

Torrhalt: 50,5 % Vlskosltet: 30 c P pH: 9,6 Härdn1ngstid= zzo sek vid 1so° c (stroke eure time) Efter tillsats av 1,1 % paratoluensulfonsyra sjönk pH till 6,9 och reaktiviteten ökade så att härdningstíden (stroke cure time) blev endast 27 sekunder.Dry content: 50.5% Voltage: 30 c P pH: 9.6 Curing time = zzo sec at 100 ° C (stroke eure time) After the addition of 1.1% paratoluenesulfonic acid, the pH dropped to 6.9 and the reactivity increased so that the curing time ( stroke cure time) was only 27 seconds.

Två olika kvaliteter av kraftpapper med ytvlkterna 80 g/m2 respektive 150 g/m2 impregnerades med hartslösningen till 50 procent hartshalt och 9,5 procent härdningsförlust.Two different grades of kraft paper with surface weights of 80 g / m2 and 150 g / m2, respectively, were impregnated with the resin solution to 50 percent resin content and 9.5 percent curing loss.

Två stompappersbanor erhållna på detta sätt pressades med ett melaminhartsimpregnerat dekorark som ytskikt och ett pergament- papper som baksida i en kontinuerlig dubbelbandpress till ett laminat med en tjocklek av 0,6 mm. Presstryeket var 13 bar, bandtemperaturen 1600 C och bandhastigheten 8 m/min.Two web paper webs obtained in this way were pressed with a melamine resin impregnated decorative sheet as a surface layer and a parchment paper as a backing in a continuous double strip press to a laminate with a thickness of 0.6 mm. The press pressure was 13 bar, the belt temperature 1600 C and the belt speed 8 m / min.

Det sålunda erhållna laminatet var väl uthärdat och hade nedan- stående'utmärkta fysikaliska egenskaper. kv Värmeprov, kastrull 1800 C, 20 minuter: godkänt Slagtålighet enligt DIN: l8,# N Blåsbildnlngstemperatur: 1900 C Dimensionsstabilítet enligt ISO längs ytan: 4,5 promille tvång ytan: ll promille Formbarhec, 6 mm radie, 14s° c= godkänt Vattenkokprov, 15 minuter: godkänt vs , -7- 455 790 Exempel 3 218 viktdelar 50-procentig formalin, 180 viktdelar av det 1 exempel 2 beskrivna modífleringsmedlet, 321 viktdelar vatten och 3,6 viktdelar trletanolamin blandades i ett reaktionskärl. pH justerades till 9,8 med en lösning av kaustiksoda, varefter l2 viktdelar p-toluensulfonamid och 264 viktdelar melamin till- sattes.The laminate thus obtained was well cured and had the following excellent physical properties. kv Heat test, saucepan 1800 C, 20 minutes: approved Impact resistance according to DIN: l8, # N Blowing formation temperature: 1900 C Dimensional stability according to ISO along the surface: 4.5 per mille forced surface: ll per mille Formbarhec, 6 mm radius, 14s ° c = approved Kettle test , 15 minutes: approved vs., -7- 455 790 Example 3 218 parts by weight of 50% formalin, 180 parts by weight of the modifier described in Example 2, 321 parts by weight of water and 3.6 parts by weight of trethanolamine were mixed in a reaction vessel. The pH was adjusted to 9.8 with a solution of caustic soda, after which 12 parts by weight of p-toluenesulfonamide and 264 parts by weight of melamine were added.

Reaktionsblandningen värmdes till 85° C, varefter pH justerades till 10,1 med kaustiksoda. Temperaturen hölls därefter konstant vid 850 C under ca 2,5 timmar. Då hartsets blandbarhet med vatten understeg 2 ml vatten/g harts vid rumstemperatur till- sattes ytterligare 1,5 viktdelar trietanolamin, varefter det hela kyldes till rumstemperatur.The reaction mixture was heated to 85 ° C, after which the pH was adjusted to 10.1 with caustic soda. The temperature was then kept constant at 850 ° C for about 2.5 hours. When the miscibility of the resin with water was less than 2 ml of water / g of resin at room temperature, an additional 1.5 parts by weight of triethanolamine was added, after which the whole was cooled to room temperature.

Det framställda vattenlösta hartset hade följande egenskaper: Torrhalt: 49,2 % Viskositet: 28 C P pH: 9,5 Häran1ngs:1a= zao sek vid 1so° c (stroke cure time) Efter tillsats av 1,1 % paratoluensulfonsyra sjönk pH till 6,9 och reaktiviteten ökade så att härdningstiden (stroke cure time) blev endast 27 sekunder.The prepared anhydrous resin had the following properties: Dry content: 49.2% Viscosity: 28 CP pH: 9.5 Reference: 1a = zao sec at 100 ° C (stroke cure time) , 9 and the reactivity increased so that the cure time was only 27 seconds.

Två olika kvaliteter av kraftpapper med ytvikterna 80 g/mz respektive 150 g/m2 impregnerades med höftfilöäniflgfifl Éíll 51,3 procent hartshalt och 9,5 procent härdningsförlust respektive 50,8 procent hartshalt och 9,7 procent härdningsförlust. Två stompappersbanor erhållna på detta sätt pressades med ett melamínhartsímpregnerat dekorark som ytskikt och ett pergament- papper som baksida i en kontinuerlig dubbelbandpress till ett laminat med en tjocklek av 0,6 mm. Presstrycket var l3,S bar, bandtemperaturen l55° C och bandhastígheten 7,3 mlmin. 455 790 ' 5 " Det sålunda erhållna laminatet var väl uthärdat och hade nedan- stående utmärkta fysikaliska egenskaper.Two different grades of kraft paper with basis weights of 80 g / m 2 and 150 g / m2, respectively, were impregnated with hips 51.3 percent resin content and 9.5 percent curing loss and 50.8 percent resin content and 9.7 percent curing loss, respectively. Two web paper webs obtained in this way were pressed with a melamine resin-impregnated decorative sheet as a surface layer and a parchment paper as a backing in a continuous double strip press to a laminate with a thickness of 0.6 mm. The press pressure was 133 bar, the belt temperature 155 ° C and the belt speed 7.3 mlmin. 455 790 '5 "The laminate thus obtained was well cured and had the following excellent physical properties.

Värmeprov, kastrull 1800 C, 20 minuter: godkänt Slagtålíghet enligt DIN: 18,8 N Blåsbíldningstemperatur: 1900 C Dimensionsstabilitet enligt ISO längs ytan: 4,5 promille tvärs ytan: ll promille Formbarhet, 6 mm radie, l45° C: godkänt Vattenkokprov, 15 minuter: godkänt Exempel 4 34,65 viktdelar 50-procentig formalin, 18,63 viktdelar vatten, 6,50 viktdelar av det i exempel 2 beskrivna modifieringsmedlet, 4,55 viktdelar isobutanol och 0,36 viktdelar trietanolamín satsades 1 ett reaktionskärl._ pH justerades till 9,1. 8,25 viktdelar urea tillsattes, varpå blandningen värmdes till 800 C. Efter 30 minuter vid denna temperatur satsades 17,31 viktdelar melamin. Efter ytterligare 30 minuter satsades 8,25 viktdelar urea, varefter temperaturen sänktes till 65° C.Heat test, saucepan 1800 C, 20 minutes: approved Impact resistance according to DIN: 18.8 N Blow forming temperature: 1900 C Dimensional stability according to ISO along the surface: 4.5 per mille across the surface: ll per mille Formability, 6 mm radius, l45 ° C: approved Kettle test, 15 minutes: approved Example 4 34.65 parts by weight of 50% formalin, 18.63 parts by weight of water, 6.50 parts by weight of the modifier described in Example 2, 4.55 parts by weight of isobutanol and 0.36 parts by weight of triethanolamine were charged to a reaction vessel. The pH was adjusted to 9.1. 8.25 parts by weight of urea were added, after which the mixture was heated to 800 DEG C. After 30 minutes at this temperature, 17.31 parts by weight of melamine were charged. After an additional 30 minutes, 8.25 parts by weight of urea were charged, after which the temperature was lowered to 65 ° C.

Under hela reaktionen hölls pH på minst 8,6 med natriumhydroxid.Throughout the reaction, the pH was maintained at least 8.6 with sodium hydroxide.

Kondensationen fortgick vid 65° C tills blandbarheten med vatten vid 250 C understeg 4 ml/g harts. Därefter satsades 1,0 vikt- delar trietanolamín, varpå reaktíonsblandningen kyldes.The condensation continued at 65 ° C until the miscibility with water at 250 ° C was less than 4 ml / g resin. Then 1.0 part by weight of triethanolamine was charged, after which the reaction mixture was cooled.

Det framställda vattenlösta hartset hade följande egenskaper.The prepared anhydrous resin had the following properties.

Torrhalt: 50 % viskositet: 30 c P pH: _ 9 Reaktiviteten justerades med 1,4 procent paratoluensulfonsyra så att härdningstiden (stroke cure time) blev 28 sekunder.Dry content: 50% viscosity: 30 c P pH: _ 9 The reactivity was adjusted with 1.4% paratoluenesulfonic acid so that the curing time was 28 seconds.

I IÅ _9- 455 790 Oblekt kraftpapper med en ytvikt av 80 g/m2 ímpregnerades med denframställda hartslösníngen till 50 procent hartshalt Och 9 procent härdningsförlust. Tre stompappersbanor erhållna på detta sätt pressades med ett melaminhartsimpregnerat dekorark som ytskikt och ett pergamentpapper som baksida i en kontinuerlig dubbel- bañdpress till ett laminat med en tjocklek av 0,6 mm. Press- trycket var 12 bar, bandtemperaturen 150° C och bandhastigheten 7 m/min. ' Det sålunda erhållna lamlnatet var väl uthärdat och hade nedan- stående utmärkta fysikaliska egenskaper.In IÅ _9- 455 790 Unbleached kraft paper with a basis weight of 80 g / m2 was impregnated with the prepared resin solution to 50 percent resin content and 9 percent curing loss. Three backing webs obtained in this way were pressed with a melamine resin impregnated decorative sheet as a surface layer and a parchment paper as a backing in a continuous double-strip press to a laminate with a thickness of 0.6 mm. The press pressure was 12 bar, the belt temperature 150 ° C and the belt speed 7 m / min. The laminate thus obtained was well hardened and had excellent physical properties below.

Värmeprov, kastrull, l80° C, 20 min: godkänt Slagtålighet enligt DIN: 17,5 N Blåsbíldníngstemperatur: 1600 C Dimensíonsstabilltet längs ytan: 4 promille tvärs ytan: 10 promille Vattenkokprov, 15 minuter: godkänt Uppfinningen är inte begränsad till de visade utföríngsformerna, då dessa kan modifieras på olika sätt inom uppfinnlngens ram.Heat test, saucepan, l80 ° C, 20 min: approved Impact resistance according to DIN: 17,5 N Blowing temperature: 1600 C Dimensional stability along the surface: 4 per mille across the surface: 10 per mille Kettle test, 15 minutes: approved The invention is not limited to the embodiments shown, as these can be modified in various ways within the scope of the invention.

Claims (2)

455 790 - 10 - PÅTENTKRAV455 790 - 10 - PÅTENTKRAV 1. l. Modifieringsmedel avsett som tillsats i bindemedel baserade på en kondensationsprodukt av a) formaldehyd och b) urea, melamin eller fenol eller en blandning av två eller tre av dessa, k ä n n e t e c k n a t därav, att medlet består av en genom basisk reaktion mellan formaldehyd och acetalde- hyd, i ett molförhållande av 3-6:1, erhållen blandning av olika hydroxylgruppsinnehâllande reaktíunsprodukter vars hydroxylgrupper i betydande omfattning är Företrade, inne- fattande Formaler av pentaerytrítul och dipentaerytritol, metyletrar av pentaerytritol och dipentaerytritol samt fri pentaerytritol.1. Modifiers intended as additives in binders based on a condensation product of a) formaldehyde and b) urea, melamine or phenol or a mixture of two or three of these, characterized in that the agent consists of a basic reaction between formaldehyde and acetaldehyde, in a molar ratio of 3-6: 1, obtained mixture of various hydroxyl group-containing reaction products whose hydroxyl groups are to a significant extent Preferred, including Forms of pentaerythritol and dipentaerythritol, methyl ethers of pentaerythritol and dipentaerythritol and dipentaerythritol. 2. Modifieringsmedel enligt patentkrav 1, k ä n n e t e c k n a t därav, att det innehåller 30-70 viktprocent av en blandning av formaler av pentaerytritol och dipentaerytritol, 5-35 viktprocent av en blandning av metyletrar av pentaerytitol och dipentaery- tritol samt 0,5-15 víktprocent fri pentaerytritol, varvid resten utgöres av bland annat olika aldolkondensationsprodukter. ¿vModifier according to Claim 1, characterized in that it contains 30-70% by weight of a mixture of formulas of pentaerythritol and dipentaerythritol, 5-35% by weight of a mixture of methyl ethers of pentaerythritol and dipentaerythritol and 0.5-15%. weight percent free pentaerythritol, with the rest consisting of, among other things, various aldol condensation products. ¿V
SE8204599A 1982-08-06 1982-08-06 MODIFICANT ADDED IN THE BINDING AGENT OF CONDENSATION PRODUCTS OF FORMAL SKIN AND UREA, MELAMIN OR PHENOL OR MIXTURES OF THESE SE455790B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE8204599A SE455790B (en) 1982-08-06 1982-08-06 MODIFICANT ADDED IN THE BINDING AGENT OF CONDENSATION PRODUCTS OF FORMAL SKIN AND UREA, MELAMIN OR PHENOL OR MIXTURES OF THESE
AT83103966T ATE23868T1 (en) 1982-08-06 1983-04-22 MODIFIER FOR A BINDING AGENT AND ITS USE IN A BINDING AGENT.
DE8383103966T DE3367926D1 (en) 1982-08-06 1983-04-22 Modifying agent for a binder and its use in a binder
EP83103966A EP0100816B1 (en) 1982-08-06 1983-04-22 Modifying agent for a binder and its use in a binder
BR8302449A BR8302449A (en) 1982-08-06 1983-05-11 BINDING AND MODIFYING AGENT
FI832010A FI76107C (en) 1982-08-06 1983-06-03 MODIFICATIONS FOR THE USE OF SILL TILLSATSMEDEL I ETT BINDEMEDEL OCH DESS ANVAENDNING.
ES523154A ES523154A0 (en) 1982-08-06 1983-06-10 PROCEDURE FOR PREPARING A MODIFYING AGENT INTENDED TO BE AN ADDITIVE OF A BINDER
NO832805A NO158813C (en) 1982-08-06 1983-08-03 MODIFICANT FOR ADDITION TO A BINDING MATERIAL AND USING THE MODIFICANT FOR THIS PURPOSE.
JP58144339A JPS5956470A (en) 1982-08-06 1983-08-05 Binder and modifier

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SE8204599A SE455790B (en) 1982-08-06 1982-08-06 MODIFICANT ADDED IN THE BINDING AGENT OF CONDENSATION PRODUCTS OF FORMAL SKIN AND UREA, MELAMIN OR PHENOL OR MIXTURES OF THESE

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SE8204599L SE8204599L (en) 1984-02-07
SE455790B true SE455790B (en) 1988-08-08

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EP (1) EP0100816B1 (en)
JP (1) JPS5956470A (en)
AT (1) ATE23868T1 (en)
BR (1) BR8302449A (en)
DE (1) DE3367926D1 (en)
ES (1) ES523154A0 (en)
FI (1) FI76107C (en)
NO (1) NO158813C (en)
SE (1) SE455790B (en)

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FR2844802B1 (en) * 2002-09-25 2007-03-23 Clariant NEW ADHESIVES CONTAINING DIACETALS

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DE2112318A1 (en) * 1971-03-15 1972-09-21 Combinatul Chimic Fagaras Phenol-formaldehyde resin plasticisers - by condensation of formaldehyde with acetone and acetaldehyde

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DE3367926D1 (en) 1987-01-15
ES8403501A1 (en) 1984-03-16
FI832010L (en) 1984-02-07
NO158813C (en) 1988-11-02
FI76107B (en) 1988-05-31
FI76107C (en) 1988-09-09
NO158813B (en) 1988-07-25
EP0100816B1 (en) 1986-11-26
ES523154A0 (en) 1984-03-16
JPS5956470A (en) 1984-03-31
BR8302449A (en) 1984-05-15
SE8204599L (en) 1984-02-07
EP0100816A1 (en) 1984-02-22
ATE23868T1 (en) 1986-12-15
FI832010A0 (en) 1983-06-03
NO832805L (en) 1984-02-07

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