NO751690L - - Google Patents
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- Publication number
- NO751690L NO751690L NO751690A NO751690A NO751690L NO 751690 L NO751690 L NO 751690L NO 751690 A NO751690 A NO 751690A NO 751690 A NO751690 A NO 751690A NO 751690 L NO751690 L NO 751690L
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- weight
- clay
- joint compound
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- compound according
- Prior art date
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- 239000000203 mixture Substances 0.000 claims description 27
- 239000011499 joint compound Substances 0.000 claims description 24
- 239000010425 asbestos Substances 0.000 claims description 21
- 238000009472 formulation Methods 0.000 claims description 21
- 229910052895 riebeckite Inorganic materials 0.000 claims description 21
- 239000004927 clay Substances 0.000 claims description 19
- 229960000892 attapulgite Drugs 0.000 claims description 13
- 229910052625 palygorskite Inorganic materials 0.000 claims description 13
- 229920002401 polyacrylamide Polymers 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims description 7
- 230000016615 flocculation Effects 0.000 claims description 6
- 238000005189 flocculation Methods 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000004816 latex Substances 0.000 claims description 3
- 229920000126 latex Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 3
- 239000002562 thickening agent Substances 0.000 claims 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims 1
- 230000003311 flocculating effect Effects 0.000 claims 1
- 229920002451 polyvinyl alcohol Polymers 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- GHYOCDFICYLMRF-UTIIJYGPSA-N (2S,3R)-N-[(2S)-3-(cyclopenten-1-yl)-1-[(2R)-2-methyloxiran-2-yl]-1-oxopropan-2-yl]-3-hydroxy-3-(4-methoxyphenyl)-2-[[(2S)-2-[(2-morpholin-4-ylacetyl)amino]propanoyl]amino]propanamide Chemical compound C1(=CCCC1)C[C@@H](C(=O)[C@@]1(OC1)C)NC([C@H]([C@@H](C1=CC=C(C=C1)OC)O)NC([C@H](C)NC(CN1CCOCC1)=O)=O)=O GHYOCDFICYLMRF-UTIIJYGPSA-N 0.000 description 8
- 229940125797 compound 12 Drugs 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 235000015927 pasta Nutrition 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- CGLQOIMEUPORRI-UHFFFAOYSA-N 2-(1-benzoyloxypropan-2-yloxy)propyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC(C)OC(C)COC(=O)C1=CC=CC=C1 CGLQOIMEUPORRI-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 102000011632 Caseins Human genes 0.000 description 1
- 108010076119 Caseins Proteins 0.000 description 1
- 229920003091 Methocel™ Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- IXWIAFSBWGYQOE-UHFFFAOYSA-M aluminum;magnesium;oxygen(2-);silicon(4+);hydroxide;tetrahydrate Chemical compound O.O.O.O.[OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Mg+2].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] IXWIAFSBWGYQOE-UHFFFAOYSA-M 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 229940021722 caseins Drugs 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- -1 magnesium-aluminum silicates Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- NXLOLUFNDSBYTP-UHFFFAOYSA-N retene Chemical compound C1=CC=C2C3=CC=C(C(C)C)C=C3C=CC2=C1C NXLOLUFNDSBYTP-UHFFFAOYSA-N 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- PZTAGFCBNDBBFZ-UHFFFAOYSA-N tert-butyl 2-(hydroxymethyl)piperidine-1-carboxylate Chemical compound CC(C)(C)OC(=O)N1CCCCC1CO PZTAGFCBNDBBFZ-UHFFFAOYSA-N 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- WCLDITPGPXSPGV-UHFFFAOYSA-N tricamba Chemical compound COC1=C(Cl)C=C(Cl)C(Cl)=C1C(O)=O WCLDITPGPXSPGV-UHFFFAOYSA-N 0.000 description 1
- KNXVOGGZOFOROK-UHFFFAOYSA-N trimagnesium;dioxido(oxo)silane;hydroxy-oxido-oxosilane Chemical compound [Mg+2].[Mg+2].[Mg+2].O[Si]([O-])=O.O[Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O KNXVOGGZOFOROK-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sealing Material Composition (AREA)
Description
IIN
Denne oppfinnelsen vedrorer forbindelser for skjoting av torr-'vegg som er blitt forbedret bare i okologisk henseende. For- ' bindelser for skjoting av torrvegger har faktisk alle inneholdt en viss mengde asbestfibre i formuleringen. En klar anstreng-else blir foretatt for å elimenere asbestfibre i produkter av alle slag, hvor disse fibre hittil vanligvis har blitt brukt p.g.a. den oppfatning at asbestfibre, særlig ved inhalasjon, This invention relates to drywall jointing compounds that have been improved only in ecological terms. Drywall jointing compounds have actually all contained a certain amount of asbestos fibers in the formulation. A clear effort is being made to eliminate asbestos fibers in products of all kinds, where these fibers have hitherto usually been used due to the opinion that asbestos fibres, particularly by inhalation,
er farlige fra et helsemessig standpunkt.are dangerous from a health point of view.
Asbestfibre har vært ansett som en nodvendig bestanddel i forbindelser for skjoting omfattende typer solgt i torr pulverform for påfolgende tilsetning av vann, og typene solgt som allerede ferdigblandete vandige pastaer. Asbestfibrene har blitt be-traktet som kritiske for å oppnå en folgende kombinasjon av egenskaper som alle er onskelige for en foretrukket forbin- Asbestos fibers have been considered a necessary component in jointing compounds including types sold in dry powder form for the subsequent addition of water, and types sold as pre-mixed aqueous pastes. The asbestos fibers have been considered critical for achieving the following combination of properties, all of which are desirable for a preferred compound.
delse for skjoting:share for splicing:
1. Plastisitet av pastaen.1. Plasticity of the paste.
2. Den vannholdende kapasiteten som vedrorer det som refe-reres til som "open time" og "wet edge". 2. The water-holding capacity relating to what is referred to as "open time" and "wet edge".
3. Unngåelse av overflodig klebeevne hos pastaen.3. Avoiding excessive stickiness of the paste.
4. Viskositetstabilitet under blandingen, lagring og bruk. 4. Viscosity stability during mixing, storage and use.
Plastisiteten av en forbindelse for skjoting finnes i pastaens evne til å lett formes til et glatt overflatesjikt med jevnt smalnende kanter ved bruk av en vanlig bred kniv. Den onskede vannholdende kapasiteten er slik at når pastaen tilfores en torr papirdekket gipsbrettflate, skal ikke pastaen avgi vannet sitt med en trekkpapirlignende virkning på gipsplatepapiret, The plasticity of a compound for jointing is found in the paste's ability to be easily shaped into a smooth surface layer with evenly tapered edges using a standard wide knife. The desired water-holding capacity is such that when the paste is applied to a dry paper-covered plasterboard surface, the paste should not release its water with a draft paper-like effect on the plasterboard paper,
i det minste tilstrekkelig lenge til at en arbeider kan full-fore sin utjevnende operasjon med den brede kniven. Pastaens klebeevne bor være tilstrekkelig til å unngå enhver tendens til at pastaen ble revet fra hverandre med den brede kniven, at least long enough for a worker to complete his leveling operation with the broad knife. The adhesiveness of the pasta must be sufficient to avoid any tendency for the pasta to be torn apart with the wide knife,
mens kniven presses fast mot pastaen og trekkes langs over-flaten, men den bor ikke forhindre lettheten av knivens de-formering til den onskede glatte beleggdannelse. Skjont det ikke er noe problem å formulere en pasta med en begynnelses-viskositet etter blandingen av enhver vesentlig form, har nær-været av asbestfibre vært av betydning for å oppnå en pasta while the knife is pressed firmly against the paste and drawn along the surface, but it should not prevent the ease of the knife's deformation to the desired smooth coating formation. Although there is no problem in formulating a paste with an initial viscosity after the mixing of any significant form, the presence of asbestos fibers has been of importance in obtaining a paste
i ' 1 som ikke sakte, men sikkert endrer viskositeten etter blandingen I eller til og med i lopet av blandingen, hvis f.eks. blandingen ! ble uforvarende forlenget. i ' 1 which does not slowly but surely change the viscosity after the mixture I or even during the course of the mixture, if e.g. the mix ! was inadvertently extended.
Ifolge den foreliggende oppfinnelse er forbindelse for skjoting tilveiebrakt fri for asbest, som sorger for alle karakteristika for en forbindelse for skjoting med faktiske asbest såvel som forbindelse for skjoting med asbest. Asbestene i tidligere formuleringer er erstattet av omtrent samme vekten av en fin pulverisert attapulgitt leire. En mindre mengde polyakrylamidharpiks blir også fortrinnsvis tilsatt. According to the present invention, a compound for splicing is provided free of asbestos, which provides all the characteristics of a compound for splicing with actual asbestos as well as a compound for splicing with asbestos. The asbestos in previous formulations has been replaced by approximately the same weight of a finely powdered attapulgite clay. A smaller amount of polyacrylamide resin is also preferably added.
Med henvisning til tegningene er det vist en kort del av en torvegg skjoteflate 10 hvorpå ferdigmikset skjoteforbindelse 12 tilfores ved hånd ved bruk av en bred kniv 14, under dannelse av et glattflatet toppdekke 16. Den viste skjoteforbindelsen 12 lages ifolge oppfinnelsen, men appliseres på samme måte og opptrer likt som tidligere skjoteforbindelse. With reference to the drawings, there is shown a short part of a turf wall joint surface 10 on which ready-mixed joint compound 12 is applied by hand using a wide knife 14, forming a smooth top cover 16. The shown joint compound 12 is made according to the invention, but is applied on the same manner and behaves in the same way as the previous joint connection.
Det vises også et grunnsjikt 18 av skjoteforbindelsen 12 og et for ste dekksjikt 20 av skjoteforbindelsen 12, som begge er her-det og torket for appliseringen av det glattflatede toppsjiktet 16. Grunnsjiktet 18 og det forste dekkesjiktet 20 kan begge lages fra den samme asbestfrie ferdigblandede skjoteforbindelsen 12, som i toppsjiktet 16. Grunnsjiktet 18 har et smalt papirskjotebånd 22 inkorporert for å frembringe en forsterk-ning av den avsluttende skjotebehandling langs skjoten 2 4 mellom de to gipsveggbordene 26. Also shown is a base layer 18 of the joint compound 12 and a first cover layer 20 of the joint compound 12, both of which are cured and dried for the application of the smooth top layer 16. The base layer 18 and the first cover layer 20 can both be made from the same asbestos-free premixed the joint connection 12, as in the top layer 16. The base layer 18 has a narrow paper joint tape 22 incorporated to produce a reinforcement of the final joint treatment along the joint 2 4 between the two plasterboards 26.
Skjoteforbindelsen 12 er en asbestfri pastaformulering egnet for produksjon i pastaform, lagring, forsendelse og så endelig bruk på samme måte som hittil har vært oppnådd med asbestholdige ferdigblandete skjoteforbindelser. The joint compound 12 is an asbestos-free paste formulation suitable for production in paste form, storage, dispatch and then final use in the same way as has been achieved up to now with asbestos-containing ready-mixed joint compounds.
Skjoteforbindelsen 12 kan fremstilles i overensstemmelse med den folgende formulering: The splice connection 12 can be produced in accordance with the following formulation:
Det brukte polyvinylacetatbindemiddel var Union Carbide Latex WC 130. Mange andre bindemidler kan brukes som erstatning som er velkjent i faget, og disse omfatter latexemulsjoner, stiv-else, kaseiner etc. Dipropylen-glykol-dibenzoat- plastifiserer, som fortrinnsvis brukes i forbindelse med polyvinylacetatbinde-middelet, ble erholdt som Benzoflex 9-88 "Velsicol Chemical Corporation". The polyvinyl acetate binder used was Union Carbide Latex WC 130. Many other binders can be used as substitutes that are well known in the art, and these include latex emulsions, starches, caseins, etc. Dipropylene glycol dibenzoate plasticizer, which is preferably used in conjunction with polyvinyl acetate binder -agent, was obtained as Benzoflex 9-88 "Velsicol Chemical Corporation".
Den finmalte kalkstenen har en finhetsgrad på mellom 80 ogThe finely ground limestone has a degree of fineness of between 80 and
99% gjennom en 325 mesh U. S. Standard Sieve. Det torrmalte glimmeret var Asheville Mica Company's grade AMC. Kalkstenen, glimmeret og leiren er alle fine uorganiske fyllmaterialer som bidrar til visse fysikalske egenskaper i sluttproduktet, som fine uorganiske fyllmaterialer har gjort i tidligere skjoteforbindelser. 99% through a 325 mesh U.S. Standard Sieve. The dry ground mica was Asheville Mica Company's grade AMC. The limestone, mica and clay are all fine inorganic fillers that contribute to certain physical properties in the final product, as fine inorganic fillers have done in previous joints.
Den finmalte attapulgitt-leiren er tilgjengelig fra Engelhard Minerals og Chemicals Corporation, og kjennetegnes som "Attagel attapulgus clay", og er fortrinnsvis Attagel 40. En ty-pisk kjemisk analyse av Attagel 4o gir: The finely ground attapulgite clay is available from Engelhard Minerals and Chemicals Corporation and is characterized as "Attagel attapulgus clay", and is preferably Attagel 40. A typical chemical analysis of Attagel 40 gives:
Hovedbestanddelene angitt i analysen ovenfor er kombinert som komplekse magnesium-aluminium-silikater, og eksiterer ikke The main constituents indicated in the above analysis are combined as complex magnesium-aluminum silicates, and do not excite
som frie oksyder.as free oxides.
Den gjennomsnittelige partikkelstorrelsen av Attagel 4o er 0/14 mikron, og 65% av materialet er finere enn 0,2 mikron. Det er omtrent 12% fri fuktighet og omtrent 22% forbrennings-tap ved 1800°F. Den har en pH i området 7,5-9,5, en spesifikk vekt på 2,36 og er lyst kremfarget. The average particle size of Attagel 4o is 0/14 micron, and 65% of the material is finer than 0.2 micron. There is about 12% free moisture and about 22% combustion loss at 1800°F. It has a pH in the range 7.5-9.5, a specific gravity of 2.36 and is light cream in colour.
Polyakrylamidharpiksen kan erholdes fra Dow Chemical Company under betegnelsen "Dow Resin 164". Polyakrylamidharpiksen som brukes i kombinasjon med attapulgittleiren, er et substitutt for asbesten i tidligere ferdigblandete skjoteforbindelser, The polyacrylamide resin can be obtained from Dow Chemical Company under the designation "Dow Resin 164". The polyacrylamide resin used in combination with the attapulgite clay is a substitute for the asbestos in previously pre-mixed joint compounds,
og har gitt den nærmeste ekvivalent med hensyn til fysikalske egenskaper som asbesten har vært kjent å bidra til. and has provided the closest equivalent in terms of physical properties to which asbestos has been known to contribute.
Uten polyakrylamidet må betraktelig mer arbeid investeres i blandingen for å få attapulgittleiren til å bli tilstrekkelig tykk. Andre flokkuleringsreagenser kan brukes som substitutt for polyakrylamid, noe mindre vellykket er "Hercules Reten 210", en kopolymer av akrylamid og en akryl, eller Union Carbide's "Polyox WSR-35", et polyetylenoksyd. Without the polyacrylamide, considerably more work must be invested in the mixture to get the attapulgite clay to be sufficiently thick. Other flocculation reagents can be used as substitutes for polyacrylamide, somewhat less successfully being "Hercules Reten 210", a copolymer of acrylamide and an acrylic, or Union Carbide's "Polyox WSR-35", a polyethylene oxide.
Hydroksypropyl-metylcellulose kan være "Dow Chemical Company's Methocel HG 228", som frembringer en kjent fortykningsvirkning i skjoteforbindelser. Mengden av vann kan varieres med varia-I sjoner i mengden av andre ingredienser, for å oppnå den ons kede viskositet hos skjoteforbindelsen på omtrent 400 til 700 jBrabenderenheter. Hydroxypropyl methyl cellulose may be "Dow Chemical Company's Methocel HG 228", which produces a known thickening action in joint compounds. The amount of water can be varied with variations in the amount of other ingredients to achieve the desired joint compound viscosity of approximately 400 to 700 Brabender units.
I det folgende gis en formulering av ferdigblandet skjoteforbindelse som omfatter asbest, og funksjonerer nærmest likt formuleringen av ovenfor angitte oppfinnelse. In the following, a formulation of pre-mixed jointing compound is given which includes asbestos, and functions almost identically to the formulation of the above-mentioned invention.
Som man ser er de to formuleringer vesentlig de samme bort-sett fra erstatningen av asbest med attapulgitt-leire og tilsetning avhoe polyakrylamidharpiks til attapulgitt-leiren. Attapulgitt-leiren kan brukes uten polyakrylamidharpiksen ifolge oppfinnelsen, men det ble da vanskelig å justere mengden av andre bestanddeler for å oppnå en brukbar plastisitet, klebeevne og viskositet. As can be seen, the two formulations are essentially the same except for the replacement of asbestos with attapulgite clay and the addition of polyacrylamide resin to the attapulgite clay. The attapulgite clay can be used without the polyacrylamide resin according to the invention, but it then became difficult to adjust the amount of other ingredients to achieve a usable plasticity, adhesiveness and viscosity.
Mange andre bestanddeler kan tilsettes formuleringen for en skjoteforbindelse ifolge oppfinnelsen som allerede velkjent i industrien, omfattende f.eks., omtrent 1% stivelsebindemid-del, omtrent 5% ikke-fibrig talk, omtrent 0,1% antiskummiddel eller 0,5% propylenglykol antifrysemiddel eller kombinasjoner av disse. Many other ingredients can be added to the formulation for a joint compound of the invention as already well known in the industry, including, for example, about 1% starch binder part, about 5% non-fibrous talc, about 0.1% antifoam or 0.5% propylene glycol antifreeze or combinations thereof.
Sammenblandingen av ingrediensene i den ferdigblandede skjoteforbindelse 12 er viktig. I den foretrukne utfdreise tilfores mikseren forst alt det vesentlige vannet. Når de andre bestanddelene er tilsatt, fortsettes sammenblandingen av bestanddelene med vann og med hverandre. Omtrent halvparten av kalkstenen unndras mikseren inntil alle de andre bestanddelene i mikseren I er sammenblandet. j The mixing of the ingredients in the premixed joint compound 12 is important. In the preferred method, the mixer is first supplied with all the essential water. When the other components have been added, the mixing of the components with water and with each other is continued. Approximately half of the limestone is removed from the mixer until all the other components in mixer I have been mixed together. j
Skjont beskrivelsen ovenfor av hva det vises på tegningen be-skriver en ferdigblandet skjoteforbindelse 12, forstås at tegningen også er egnet for forståelsen av bruk av en torrpulverformulering ifolge den foreliggende oppfinnelse. En torrpulverformulering som nedenfor fremstilt kan blandes med vann og deretter brukes på noyaktig samme måte som den ferdigblandede skjoteforbindelse 12. Although the above description of what is shown in the drawing describes a ready-mixed joint compound 12, it is understood that the drawing is also suitable for understanding the use of a dry powder formulation according to the present invention. A dry powder formulation as prepared below can be mixed with water and then used in exactly the same way as the pre-mixed joint compound 12.
En egnet torrpulverformulering innen oppfinnelsens ramme erA suitable dry powder formulation within the scope of the invention is
som folger:as follows:
Når den ovenfor angitte torrpulverformuleringen blandes med omtrent 45 vektdeler vann, oppstår en ferdig-til-bruk-blanding av skjoteforbindelsen som virker ganske likt de tidliger torr-pulverf ormuleringer som inneholder asbest. When the above-mentioned dry powder formulation is mixed with about 45 parts by weight of water, a ready-to-use mixture of the joint compound is produced which acts quite similar to the earlier dry powder formulations containing asbestos.
For å sammenligne ovenfor angitte formulering med en mest mu-lig sammenlignbar asbestinneholdende formulering, kan attap-_ulgitt-leiren og polyakrylamidharpiksen utelates, og 1,4 deler av Union Carbide's SG 210 Calidria asbest tilsettes. De viktigste karakteristika for bedommelsen ved en sammenligning av disse produktene er slike som ikke kan beskrives ved nu-meriske tall som kan sammenlignes. Disse karakteristika må bedommes ved folelse og ved praktisk bruk av skjoteforbin-delsene og sammenligning av de ferdige produkter. To compare the above formulation with a most comparable asbestos containing formulation, the attap-ulgitite clay and polyacrylamide resin may be omitted and 1.4 parts of Union Carbide's SG 210 Calidria asbestos added. The most important characteristics for the assessment when comparing these products are those that cannot be described by numerical figures that can be compared. These characteristics must be judged by feel and by practical use of the joints and comparison of the finished products.
1 Minimale mengder av torre preserverende antiskummidler og andre I kjente additiver kan også innfores i de torre fremstilte formu-l leringene i overensstemmelse med oppfinnelsen lignende brukt i tidligere asbestholdige torrpulverformuleringer. 1 Minimal amounts of dry preservative antifoam agents and other known additives can also be introduced into the dry formulations produced in accordance with the invention, similarly used in previous asbestos-containing dry powder formulations.
Man kan variere det relative innhold av de forskjellige bestanddeler i overensstemmelse med oppfinnelsen.. Bestanddelene i torrpulverformuleringen og de faste stoffene i den ferdigblandede pastaen kan variere betraktelig som i det folgende vist: The relative content of the various components can be varied in accordance with the invention. The components in the dry powder formulation and the solids in the pre-mixed paste can vary considerably as shown in the following:
Formuleringene vil også inneholde et flokkuleringsmiddel for leiren som omtrent0,1 til 5 deler vekt polyakrylamidharpiks for hver 10 deler attapulgitt-leire. The formulations will also contain a flocculant for the clay which is about 0.1 to 5 parts by weight of polyacrylamide resin for every 10 parts of attapulgite clay.
Skjoteforbindelser ifolge oppfinnelsen var blitt funnet å komme nærmere karakteristika og kvaliteter av tidligere skjoteforbindelser med asbestinnhold enn noen annen kjent asbestfri formulering. Joint compounds according to the invention had been found to come closer to the characteristics and qualities of earlier joint compounds with asbestos content than any other known asbestos-free formulation.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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NO751690A NO751690L (en) | 1975-05-13 | 1975-05-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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NO751690A NO751690L (en) | 1975-05-13 | 1975-05-13 |
Publications (1)
Publication Number | Publication Date |
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NO751690L true NO751690L (en) | 1976-11-16 |
Family
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Application Number | Title | Priority Date | Filing Date |
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NO751690A NO751690L (en) | 1975-05-13 | 1975-05-13 |
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NO (1) | NO751690L (en) |
-
1975
- 1975-05-13 NO NO751690A patent/NO751690L/no unknown
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