DK143225B - UNSUMED CEMENT MATERIALS - Google Patents

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(11) FREMLÆGGELSESSKRIFT 143225 DANMARK <δ1> ,nt·Cl·3 c oa B 13/26 /M 04 f 15/12 §(21) Ansøgning nr. 2475/69 (22) Indleveret den 6· maj 1 9^9 (24) Løbedag ^ * ®®· J ^ 9 ^9 (44) Ansøgningen fremlagt og „ fremlæggelsesskriftet offentliggjort den i · JUX1 i yo l(11) PRESENTATION 143225 DENMARK <δ1>, nt · Cl · 3 c oa B 13/26 / M 04 f 15/12 § (21) Application No. 2475/69 (22) Filed on 6 · May 1 9 ^ 9 (24) Running day ^ * ®® · J ^ 9 ^ 9 (44) The application presented and 'the petition published on it in · JUX1 in yo l

Dl REKTORATET FORDl THE RECTORATE FOR

PATENT-OG VAREMÆRKEVÆSENET (30) Prioritet begæret fra denPATENT AND TRADE MARKET (30) Priority requested from it

15. maj 1968, 22624/68, GB 51. mar. 1969, 22624/68, GB15 May 1968, 22624/68, GB 51 Mar. 1969, 22624/68, GB

(41) Aim. tilg. 14. nov. 1969 (71) IMPERIAL CHEMICAL INDUSTRIES LIMITED, Thames House North, Militant London S.W.1, GB.(41) Aim. avail. Nov 14 1969 (71) IMPERIAL CHEMICAL INDUSTRIES LIMITED, Thames House North, Militant London S.W.1, GB.

(72) Opfinder: Herbert Jackson ^hearing, Hexagon House, Blackley, Manchester, Lancashire, GB.(72) Inventor: Herbert Jackson ^ hearing, Hexagon House, Blackley, Manchester, Lancashire, GB.

(74) Fuldmægtig under sagens behandling:(74) Plenipotentiary in the proceedings:

Firmaet Chas. Hude.The company Chas. Hude.

(54) Uopskummede cementmaterialer.(54) Foamed cement materials.

Den foreliggende opfindelse angår hidtil ukendte uopskummede cementmaterialer opnået ved at sammenblande og tillade hærdning af en hy= draulisk cement,et kiselsyreholdigt fyldstof,vand,et organisk polyisocyanat og en polyol, idet det organiske polyisocyanat anvendes i en mængde, som er tilstrækkelig til at give et overskud af isocyanatgrupper i forhold til polyolens hydroxylgrupper. Et sådant cementmateriale er 1 f.eks. velegnet til fremstilling af gulve. Fra tidligere patentpublikationer er det kendt at blande polymere i cementmaterialer. Svensk patentskrift nr. 303041 beskriver således anvendelsen af tilsat polyester, svensk patentskrift nr. 313765 beskriver anvendelsen af 2 U3225 en vinylacetatcopolymer, og svensk patentskrift nr. 332133 beskriver anvendelsen af epoxider og en vandaktiveret polymerisationsinitiator.The present invention relates to novel foamed cement materials obtained by admixing and allowing curing of a hydraulic cement, a silicic filler, water, an organic polyisocyanate and a polyol, the organic polyisocyanate being used in an amount sufficient to give an excess of isocyanate groups relative to the hydroxyl groups of the polyol. Such a cement material is 1 e.g. suitable for floor preparation. It has been known from previous patent publications to mix polymers in cement materials. Thus, Swedish Patent No. 303041 discloses the use of added polyester, Swedish Patent No. 313765 describes the use of 2 U3225 a vinyl acetate copolymer, and Swedish Patent No. 332133 describes the use of epoxides and a water-activated polymerization initiator.

Der er i ingen af de ovennævnte processer en kemisk reaktion mellem cementen og den polymere. Af denne grund er hærdningstiden ikke væsentlig kortere end for normale cementblandinger. De beskrevne hærdningssystemer arbejder desuden ikke særlig godt eller kan endog standse ved temperaturer under 5°C.In none of the above processes is there a chemical reaction between the cement and the polymer. For this reason, the curing time is not significantly shorter than that of normal cement mixtures. Furthermore, the described curing systems do not work very well or can even stop at temperatures below 5 ° C.

I fransk patentskrift nr. 1.393.454 er der beskrevet blandingen af et hydraulisk bindemiddel og harpikser, såsom polyurethaner. Disse er tilsat med et hærdningsmiddel, således at det må antages, at polyurethanen dannes som sådan og ikke kan reagere yderligere med cementen.French Patent No. 1,393,454 discloses the mixture of a hydraulic binder and resins such as polyurethanes. These are added with a curing agent so that it is assumed that the polyurethane is formed as such and cannot react further with the cement.

Det har nu vist sig, at der kan opnås et forbedret materiale ved at sætte visse mængder af isocyanater og polyoler til hydrauliske cementer sammen med andre sædvanlige additiver. Ved anvendelse af isocya= nater optræder der en reaktion med cementen, således at der opnås hårde overflader i løbet af nogle få timer eller endog på under 1 time. Materialerne kan desuden blandes og hærdes ved temperaturer ned til 0°C - 5°C.It has now been found that an improved material can be obtained by adding certain amounts of isocyanates and polyols to hydraulic cements with other conventional additives. When using isocyanates, a reaction occurs with the cement so that hard surfaces are obtained within a few hours or even less than 1 hour. In addition, the materials can be mixed and cured at temperatures down to 0 ° C - 5 ° C.

Uopskummede cementmaterialer ifølge opfindelsen er ejendommelige ved, at forholdet af organisk polyisocyanat plus polyol til vand ligger i intervallet fra 0,98:1 til 8,4:1, idet vandmængden ligger i intervallet fra 15 til 25 vægt% af nævnte hydrauliske cement.Non-foamed cement materials of the invention are characterized in that the ratio of organic polyisocyanate plus polyol to water is in the range of 0.98: 1 to 8.4: 1, the amount of water being in the range of 15 to 25% by weight of said hydraulic cement.

Udtrykket “hydraulisk cement” anvendes i sin sædvanlige betydning til at betegne strukturmaterialer af den art, som anvendes blandet med vand og derefter hærder som resultat af fysiske eller kemiske ændringer, der forbruger den tilstedeværende vandmængde. Såvel som portland-cement omfatter udtrykket: 1. Hurtigt hærdende cementer, karakteriseret ved at have et højt aluminiumoxidindhold.The term "hydraulic cement" is used in its usual sense to denote structural materials of the kind used in admixture with water and then harden as a result of physical or chemical changes that consume the amount of water present. As well as portland cement, the term includes: 1. Fast curing cements, characterized by having a high alumina content.

2. Lav-temperatur-cementer, karakteriseret ved at have høje procentdele dicalciumsilicat og tetracalciumaluminoferrit og lave procentdele tricalciumsilicat og tricalciumaluminat.2. Low-temperature cements characterized by having high percentages of dicalcium silicate and tetracalcium alumina ferrite and low percentages of tricalcium silicate and tricalcium aluminate.

3 143225 3. Sulfatresistente cementer, karakteriseret ved at have usædvanligt; høje procentdele tricalciumsilicat og dicalciumsilicat og usædvanligt lave procentdele tricalciumaluminat og tetracalciumaluininoferrit.3 Sulfate resistant cements characterized by having unusual; high percentages of tricalcium silicate and dicalcium silicate and exceptionally low percentages of tricalcium aluminate and tetracalcium aluminine ferrite.

4. Portlandhøjovnscement, karakteriseret ved at have en blanding af portlandcementklinker og granuleret slagge.4. Portland blast furnace cement, characterized by having a mixture of Portland cement clinker and granulated slag.

5. Murværkscement, karakteriseret ved at have blandinger af portland-cement og én eller flere af følgende: Hydratiseret kalk, granuleret slagge, pulveriseret kalksten, colloider, diatomSjord eller findelte former for kiselsyre, calciumstearat og paraffin.5. Masonry cement, characterized by having mixtures of portland cement and one or more of the following: Hydrated lime, granulated slag, powdered limestone, colloids, diatomaceous earth or finely divided forms of silicic acid, calcium stearate and paraffin.

6. Naturlige cementer, karakteriseret ved at være materiale opnået fra aflejringer i Lehigh Valley, U.S.A.6. Natural Cements, characterized by being material obtained from deposits in the Lehigh Valley, U.S.A.

7. Kalkcement,karakteriseret ved at have oxid af calcium i dets rene eller urene former og eventuelt indeholdende noget lerholdigt materiale .7. Lime cement, characterized by having calcium oxide in its pure or impure forms and optionally containing some clay-containing material.

8. Gipscement, karakteriseret ved at have tilsætningen af 5-10% gips til kalk.8. Plaster cement, characterized by having the addition of 5-10% plaster to lime.

9. Puzzolancement, karakteriseret ved at have blandingen af puzzolan, traskiselgur, pimpsten, bims, kalktuf, santorinjord eller granuleret slagge med kalkmørtel.9. Puzzolancement, characterized by having the mixture of the pozzolan, pelagic clock, pumice, bims, lime tufts, Santorin soil or granulated slag with lime mortar.

10. Calciumsulphatcementer, karakteriseret ved at være de,som afhænger af hydratiseringen af calciumsulphat og omfatter brændt gips, Keene's cement og pariancement.10. Calcium sulphate cements, characterized by being those which depend on the hydration of calcium sulphate and include roasted plaster, Keene's cement and parian cement.

Som kiselsyrefyldstoffer, der kan anvendes, kan nævnes sand og sili» ciumoxidarter med lavt lerindhold, fortrinsvis vasket og med en partikelstørrelse hovedsagelig i intervallet 0,076 - 38 mm, selv om størrelser, som falder uden for disse grænser, kan anvendes til specielle formål.Suitable silica fillers include low clay sand and silica species, preferably washed and having a particle size mainly in the range of 0.076 - 38 mm, although sizes falling outside these limits may be used for particular purposes.

Som organiske polyisocyanater, der kan anvendes, kan nævnes tolylen= diisocyanat og diphenylmethandiisocyanat ligesom uretedion eller iso= cyanuratpolymere af disse og isocyanatterminerede polyurethaner opnået ved af omsætte et overskud af et organisk diisocyanat tted en pply= 4 143225 funktionel isocyanat-reaktiv forbindelse, såsom en glycol eller højere polyvalent alkohol, aminoalkohol eller polyamin, en polyester, poly= esteramid eller polyether.As organic polyisocyanates which may be used, mention may be made of tolylene = diisocyanate and diphenylmethane diisocyanate as well as urethione or isocyanurate polymers thereof and isocyanate-terminated polyurethanes obtained by reacting an excess of an organic diisocyanate with a partially active compound such as glycol or higher polyhydric alcohol, amino alcohol or polyamine, a polyester, polyester ester amide or polyether.

Foretrukne polyoler er divalente eller trivalente polyethere med en equivalentvægt fra 100 til 1500, men andre polyvalente alkoholer, aminoalkoholer samt polyaminer, polyestere og polyesteramider med endestillede hydroxygrupper kan også anvendes.Preferred polyols are divalent or trivalent polyethers having an equivalent weight of 100 to 1500, but other polyhydric alcohols, amino alcohols as well as polyamines, polyesters and polyesteramides having terminated hydroxy groups may also be used.

Materialerne ifølge opfindelsen kan alt efter deres flydeevne anvendes til selvnivellerende gulve eller til gulve, der glattes ved hjælp af en murske og er bedre end almindelige cementgulvbelægninger eller andre kendte harpiksbundne cementgulvbelægningsmaterialer med hensyn til hærdningshastigheden. Ifølge opfindelsen er det muligt at opnå gulve, som kan tåle, at man går på dem i løbet af 1 time, og modstå slagprøven med en faldende vægtmængde i overensstemmelse med DEF 1083, metode 17, efter kun 24 timers hærdning.The materials of the invention can, depending on their flowability, be used for self-leveling floors or for floors that are smoothed by a trowel and are superior to ordinary cement floor coatings or other known resin bonded cement floor coatings with respect to the cure rate. According to the invention, it is possible to obtain floors that can withstand walking on them within 1 hour and withstand the impact test with a decreasing weight in accordance with DEF 1083, method 17, after only 24 hours hardening.

Opfindelsen illustreres ved hjælp af følgende eksempler, hvori delene er vægtdele.The invention is illustrated by the following examples in which the parts are parts by weight.

Eksempel 1.Example 1.

100 dele portlandcement og 100 dele af en 70%ig opløsning af et poly= isocyanat (fremstillet som beskrevet nedenfor) sammenblandes, og derpå iblandes 100 dele sand af 30-200 B.S. sistørrelse (0,05-0,0076 cm), 25 dele vand og 10 dele af en oxypropyleret glycerol med hydroxy1-værdi 535 mg KOH/g.100 parts of Portland cement and 100 parts of a 70% solution of a polyisocyanate (prepared as described below) are mixed together and then 100 parts of sand of 30-200 B.S. side size (0.05-0.0076 cm), 25 parts water and 10 parts of an oxypropylated glycerol having hydroxy1 value 535 mg KOH / g.

Der fås et hurtigt hærdende flydende materiale, som påsmurt i et 1,27 cm tykt lag hurtigt størkner og efter 2-2 1/2 times forløb er tilstrækkelig fast til, at man kan gå derpå.A fast-curing liquid material is obtained, which is lubricated quickly in a 1.27 cm thick layer and after 2-2 1/2 hours is sufficiently firm to allow it to go on.

Det anvendte polyisocyanat kan fremstilles ved at opvarme en blanding af tolylendiisocyanat (1 mol), trimethylolpropan (0,197 mol) og butylen= glycol (0,159 mol) i 2 timer ved 60°C i nærværelse af halvdelen af den samlede vægtmængde af en 1:1 blanding af β-ethoxyethylacetat og xylen. 0,029 mol af en oxypropyleret glycerol med molekylvægt 3000 tilsættes, og opvarmningen fortsættes i 4 timer ved 60°C. Der tilsættes derpå tilstrækkeligt xylen til at danne en opløsning med et tørstofindhold på 70%.The polyisocyanate used can be prepared by heating a mixture of tolylene diisocyanate (1 mole), trimethylol propane (0.197 mole) and butylene = glycol (0.159 mole) for 2 hours at 60 ° C in the presence of half the total weight of a 1: 1 mixture of β-ethoxyethyl acetate and xylene. 0.029 mol of an oxypropylated glycerol of molecular weight 3000 is added and heating is continued for 4 hours at 60 ° C. Sufficient xylene is then added to form a solution with a solids content of 70%.

Eksempel 2.Example 2.

c 143225 5 Såfremt den oxypropylerede glycerol, som blev anvendt i eksempel 1 (første afsnit), erstattes med 10 dele af en oxypropyleret triethanol= amin med molekylvægt 320, opnås et endnu hurtigere hærdende materiale.If the oxypropylated glycerol used in Example 1 (first paragraph) is replaced by 10 parts of an oxypropylated triethanol = amine of molecular weight 320, an even faster curing material is obtained.

Det kan tåle, at man går derpå 1 time efter, at det er blevet påsmurt.It can be tolerated to walk on it 1 hour after it has been lubricated.

EksempelExample

Cement 100 dele isocyanat (se nedenfor) 50 dele sand 100 dele vand 19 dele oxypropyleret glycerol 10 dele (OH-værdi 535 mg/g) giver et materiale, som man kan gå på kun 1 time efter, at det er blevet påsmurt.Cement 100 parts of isocyanate (see below) 50 parts of sand 100 parts of water 19 parts of oxypropylated glycerol 10 parts (OH-value 535 mg / g) gives a material which can be walked on only 1 hour after it has been lubricated.

Det i dette produkt anvendte isocyanat kan fremstilles ved at omsætte 1 mol tolylendiisoeyanat, 0,22 mol glycerol og 0,18 mol diethylen= glycol i 1/3 af deres samlede vægtmængde af ethylacetat ved 75-80°C i 3 timer.The isocyanate used in this product can be prepared by reacting 1 mole of tolylene diisoeyanate, 0.22 mole of glycerol and 0.18 mole of diethylene = glycol in 1/3 of their total weight of ethyl acetate at 75-80 ° C for 3 hours.

Eksempel Såfremt det i eksempel 3 anvendte isocyanat erstattes med 60 dele af det produkt, som blev fremstillet ved at omsætte beg af kultjære indeholdende 2 vægt# hydroxylgrupper (eller deres equivalent af isocyanat-reaktive grupper) med diphenylmethandiisocyanat (6,5 equivalenter) som 85# opløsning i 2-methy 1 -2-methoxypentan-li--on ved 90°C i k timer, kan det resulterende materiale tåle, at man går derpå 1 time efter, at det er blevet påsmurt.Example If the isocyanate used in Example 3 is replaced by 60 parts of the product produced by reacting pitches of coal tar containing 2 weight # hydroxyl groups (or their equivalent of isocyanate-reactive groups) with diphenylmethane diisocyanate (6.5 equivalents) as 85 # solution in 2-methyl 1 -2-methoxypentanil at 90 ° C for hours, the resulting material can withstand being left on for 1 hour after it has been lubricated.

Eksempel 5« 143225 6Example 5 «143225 6

Cement 100 dele diphenylmethandii socyanat ko dele sand 100 dele vand 15 dele oxypropyleret glycerol 10 dele (som i eksempel 1)Cement 100 parts diphenylmethandii socyanate cow parts sand 100 parts water 15 parts oxypropylated glycerol 10 parts (as in Example 1)

Dette materiale kan tåle, at man går derpå 1 time efter, at det er blevet påsmurt.This material can withstand being left on for 1 hour after it has been lubricated.

Eksempel 6.Example 6

Cement 100 dele tolylendiisocyanat 1^,5 dele sand 100 dele vand 25 dele oxypropyleret glycerol 10 dele (som i eksempel 1)Cement 100 parts of tolylene diisocyanate 1, 5 parts of sand 100 parts of water 25 parts of oxypropylated glycerol 10 parts (as in Example 1)

Dette materiale kan tåle, at man går derpå ca, 30 minutter efter, at det er blevet påsmurt.This material can withstand walking for about 30 minutes after it has been lubricated.

Eksempel 7.Example 7

Såfremt det i eksempel 6 anvendte tolylendiisocyanat erstattes med 200 dele af den følgende blanding, fås et tilsvarende hurtigt hærdende materiale.If the tolylene diisocyanate used in Example 6 is replaced by 200 parts of the following mixture, a correspondingly fast-curing material is obtained.

Et polyethylen/propylen (7:3) adipat med molekylvægt ca. 1000 kondenseres med 1,^3 equivalenter tolylendiisocyanat, og det resulterende produkt (1 del) blandes med 1 del af en isocyanuratpolymer af tolylen= diisocyanat med NCO-værdi 1^,8$ i 0,5 dele 2-methyl-2-methoxypentan-1+-on og 1,5 dele butylacetat.A polyethylene / propylene (7: 3) molecular weight adipate approx. 1000 is condensed with 1,3 equivalents of tolylene diisocyanate and the resulting product (1 part) mixed with 1 part of an isocyanurate polymer of tolylene = diisocyanate having NCO value 1, 8 $ in 0.5 parts 2-methyl-2-methoxypentane -1 + -one and 1.5 parts butyl acetate.

Eksempel ΰ 7 1/13225 100 vægtdele cement blandes 1 h2 dele af en 75# opløsning i ethyl= glycolacetat/xylen (1:1) af et reaktionsprodukt af hexamethylendiiso= cyanat og vand med et isocyanatindhold på ca. 16#. Til denne blanding tilsættes, idet der yderligere omrøres, 100 dele sand, 20 dele vand og 10 dele oxypropyleret glycerol med OH-værdi 535 mg KOH/g. Der fås en hurtigt tørrende urethanbundet beton, som er hård nok til, at man kan gå derpå efter 1-1 1/2 times forløb.Example ΰ 7 1/13225 100 parts by weight of cement are mixed 1 h 2 parts of a 75 # solution in ethyl = glycol acetate / xylene (1: 1) of a reaction product of hexamethylene diiso = cyanate and water with an isocyanate content of approx. # 16. To this mixture is added, further stirring, 100 parts of sand, 20 parts of water and 10 parts of oxypropylated glycerol with OH value 535 mg KOH / g. A fast-drying urethane-bonded concrete is obtained, which is hard enough for walking after 1-1 1/2 hours.

Eksempel 9 100 vægtdele cement blandes i 50 dele af en 75# opløsning i ethylgly= colacetat/xylen (1:1) af et reaktionsprodukt af hexamethylendiisocy= anat, trimethylolpropan og 1,3-butandiol med et isocyanatindhold på ca. 12#. Til denne blanding tilsættes, idet der yderligere omrøres, 100 dele sand, 25 dele vand og 10 dele oxypropyleret glycerol med OHr-værdi 535 mg KOH/g. Der fås en hurtigt tørrende urethanbundet beton, som er hård nok til at gå på i løbet af 1 - 1 1/2 time.Example 9 100 parts by weight of cement are mixed in 50 parts of a 75 # solution in ethyl gly = colacetate / xylene (1: 1) of a reaction product of hexamethylene diisocyanate, trimethylolpropane and 1,3-butanediol with an isocyanate content of approx. # 12. To this mixture is added, further stirring, 100 parts of sand, 25 parts of water and 10 parts of oxypropylated glycerol with OHr value 535 mg KOH / g. A fast-drying urethane-bonded concrete is available which is hard enough to walk on within 1 - 1 1/2 hours.

Eksemnel 10 Såfremt den i eksempel 1 anvendte oxypropylerede glycerol erstattes med 30 dele af en polyester opnået ved at kondensere 1,3-butylenglycol, hexantriol og adipinsyre sammen i det molære forhold 3:1:3 og med en syreværdi under 3 mg KOH/g, fås et selvnivellerende materiale, som hærder på ca. 1 time.Example 10 If the oxypropylated glycerol used in Example 1 is replaced by 30 parts of a polyester obtained by condensing 1,3-butylene glycol, hexanetriol and adipic acid together in the molar ratio 3: 1: 3 and having an acid value below 3 mg KOH / g , a self-leveling material is obtained which cures approx. 1 hour.

Eksempel n Såfremt den i eksempel 1 anvendte oxypropylerede glycerol erstattes med 30 dele af en opløsning af et polyesteramid-polyurethankondensa-tionsprodukt fremstillet som beskrevet nedenfor, fås et materiale, som kræver spredning, og som hærder på 30-60 minutter.Example n If the oxypropylated glycerol used in Example 1 is replaced with 30 parts of a solution of a polyesteramide-polyurethane condensation product prepared as described below, a material requiring dispersion is obtained which cures in 30-60 minutes.

Opløsningen af polyesteramid-polyurethankondensationsproduktet, som blev anvendt i dette eksempel, fremstilles ved hjælp af følgende metode: 8 143225The solution of the polyesteramide-polyurethane condensation product used in this example is prepared by the following method: 8 143225

Et polyesteramid fremstilles ved at opvarme en blanding af *+330 dele adipinsyre, 1820 dele ethylenglycol, 177 dele diethylenglycol og 113 dele monoethanolamin ved 24o°C under tilbagesvaling, indtil der fås en syreværdi på 2,0-3,0 mg KOH/g, og produktet har en molekylvægt på 1850.A polyester amide is prepared by heating a mixture of * + 330 parts adipic acid, 1820 parts ethylene glycol, 177 parts diethylene glycol and 113 parts monoethanolamine at 24 ° C under reflux until an acid value of 2.0-3.0 mg KOH / g is obtained. , and the product has a molecular weight of 1850.

En blanding af 1533 dele af det ovennævnte polyesteramid, 2108 dele methylethylketon, 2,08 dele vand, 10,75 dele ethylenglycol, 0,77 dele dimethylaminopyridin og 188,5 dele af en 80:20 blanding af 2,*+- og 2,6-tolylendiisocyanater omrøres ved 57-63°Cj indtil viskositeten for en prøve målt ved 25°C når en værdi mellem 100 og l*+0 poises. 13>5 dele methanol tilsættes derpå, og blandingen omrøres ved samme temperatur i 3 timer. 0,38 dele salicylsyre tilsættes derpå, og blandingen omrøres ved den samme temperatur i 1 time og afkøles derpå. Den således opnåede polyesteramid-polyurethanopløsning er derpå færdig til brug.A mixture of 1533 parts of the above polyesteramide, 2108 parts of methyl ethyl ketone, 2.08 parts of water, 10.75 parts of ethylene glycol, 0.77 parts of dimethylaminopyridine and 188.5 parts of an 80:20 mixture of 2, * + - and 2 6-Tolylene diisocyanates are stirred at 57-63 ° C until the viscosity of a sample measured at 25 ° C reaches a value between 100 and 1 * + 0. 13> 5 parts of methanol are then added and the mixture is stirred at the same temperature for 3 hours. 0.38 parts of salicylic acid is then added and the mixture is stirred at the same temperature for 1 hour and then cooled. The polyesteramide-polyurethane solution thus obtained is then ready for use.

Den anførte vandmængde er den samlede vandmængde, som forefindes, idet den mængde, spm virkelig tilsættes, afhænger af eventuelle små vandmængder, som findes i opløsningsmidlet.The amount of water stated is the total amount of water present, the amount of water being really added depends on any small quantities of water present in the solvent.

Eksempel 12.Example 12.

Såfremt den i eksempel 1 anvendte oxypropylerede glycerol erstattes med 30 dele af en 50 vægt fo opløsning i xylen af en dehydreret ricinus-oiiemodificeret glycerylphthalatharpiks (en ikke tørrende alkydhar-piks), fås et meget tykt materiale, som kræver spredning, men som hærder på ca. 30 minutter.If the oxypropylated glycerol used in Example 1 is replaced by 30 parts of a 50 wt solution in xylene of a dehydrated castor oil-modified glyceryl phthalate resin (a non-drying alkyd resin), a very thick material which requires spreading is obtained. ca. 30 minutes.

Eksempel 13.Example 13

Såfremt den i eksempel 1 anvendte oxypropylerede glycerol erstattes med 30 dele af en 50 vægt$ opløsning i toluen af et reaktionsprodukt fra opvarmning af glycerol, palmekerneoliefedtsyrer, jordnøddeolie-fedtsyrer, stearinsyre og phthalsyreanhydrid (et tørrende alkydhar-piks), fås et meget tykt materiale, som kræver spredning, men hærder på ca. 30 minutter.If the oxypropylated glycerol used in Example 1 is replaced by 30 parts of a 50% by weight solution in toluene of a reaction product from heating glycerol, palm kernel fatty acids, peanut oil fatty acids, stearic acid and phthalic anhydride (a dry alkyd resin), a very thick material is obtained. , which requires spreading but hardens at approx. 30 minutes.

143225143225

Eksempel 14.Example 14.

9 Såfremt den i eksempel 1 anvendte oxypropylerede glycerol erstattes med k2 dele af en 50 vægt# opløsning i methylethylketon af én polyesterharpiks opnået ved at omsætte diphenylolpropan med epichlorhy= drln, således at det resulterende produkt har en hydroxylværdi på ca. 130 mg KOH/g, fås et materiale, som let kan hældes og er selvnivelle-rende, og som hærder til en sådan hårdhed, at man kan gå derpå i løbet af 5-6 timer. ;9 If the oxypropylated glycerol used in Example 1 is replaced by k 2 parts of a 50% by weight solution in methyl ethyl ketone of one polyester resin obtained by reacting diphenylolpropane with epichlorohydrin so that the resulting product has a hydroxyl value of approx. 130 mg KOH / g is obtained a material which is easily pourable and self-leveling, and which cures to such a hardness that it can be applied within 5-6 hours. ;

Eksempel 15.Example 15

Gement 100 deleCement 100 parts

Diphenylmethandiisocyanatforpoly= mereopløsning (se nedenfor) 100 deleDiphenylmethane diisocyanate prepoly = more solution (see below) 100 parts

Sand 100 deleTrue 100 parts

Vand 25 deleWater 25 parts

Oxypropyleret glycerol molekyl= vægt ca. 1000 35 dele (0H-værdi 165 mg KOH/g) giver et selvnivellerende materiale, som hærder på ca. 1 time.Oxypropylated glycerol molecule = weight approx. 1000 parts (OH value 165 mg KOH / g) gives a self-leveling material which cures approx. 1 hour.

Diphenylmethandiisocyanatforpolymeropløsningen, som blev anvendt i dette eksempel, fås på følgende måde: 100 dele oxypropyleret glycerol med molekylvægt ca. 1000 (hydroxylværdi 165 mg KOH/g) blandes med 25 dele af en opløsningsmiddelblanding bestående af 70 vægt# tør cyclohexanon og 30 vægt# xylen. 205 dele af et i handelen værende -diisocyanat-diphenylmethanprodukt med et NCO-indhold på 30,0# opløses i yderligere 50 dele af opløsningsmiddelblandingen, og de to opløsninger blandes og lagres i en tør, lukket beholder i 3 dage, hvorefter den forpolymere er klar til brug*The diphenylmethane diisocyanate prepolymer solution used in this example is obtained as follows: 100 parts of oxypropylated glycerol of molecular weight approx. 1000 (hydroxyl value 165 mg KOH / g) is mixed with 25 parts of a solvent mixture consisting of 70% by weight dry cyclohexanone and 30% by weight xylene. 205 parts of a commercial diisocyanate diphenylmethane product having an NCO content of 30.0 # are dissolved in an additional 50 parts of the solvent mixture and the two solutions are mixed and stored in a dry, closed container for 3 days, after which the prepolymer is ready to use*