DK157306B - COATING MATERIALS CONTAINING A FLUORCARBON POLYMER, A FLOATING CARRIER AND A METAL OXIDE OR HYDROXIDE OR ANY HEAT COMPOSIBLE METAL COMPOUND AND ANY PIGMENT - Google Patents
COATING MATERIALS CONTAINING A FLUORCARBON POLYMER, A FLOATING CARRIER AND A METAL OXIDE OR HYDROXIDE OR ANY HEAT COMPOSIBLE METAL COMPOUND AND ANY PIGMENT Download PDFInfo
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- DK157306B DK157306B DK140175AA DK140175A DK157306B DK 157306 B DK157306 B DK 157306B DK 140175A A DK140175A A DK 140175AA DK 140175 A DK140175 A DK 140175A DK 157306 B DK157306 B DK 157306B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- Food Science & Technology (AREA)
- Wood Science & Technology (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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Description
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Opfindelsen angâr et overtræksmateriale indeholdende en fluorcarbonpolymer, en flydende bærer og et metaloxid eller -hydroxid eller en til et sâdant varmedekomponerbar metalforbindelse samt eventuelt et pigment.The invention relates to a coating material containing a fluorocarbon polymer, a liquid carrier and a metal oxide or hydroxide or a metal-heat-compatible metal compound and optionally a pigment.
5 I de seneste âr har kogegrej overtrukket med fluor carbonpolymer e af forskellige typer vundet udstrakt anven-delse, idet næsten enhver husmoder foretrækker at anvende sâdant kogegrej i sit kokken, fordi maden er mindre tilboje-lig til at hænge fast til det, og fordi det er sâ let at 10 rengere.5 In recent years, cookware coated with fluorocarbon polymer of various types has gained widespread use, with almost every housewife preferring to use such cookware in his cook because the food is less prone to sticking to it and because It is so easy to clean.
Disse fluorcarbonpolymer-overtræk fremstilles sædvan-ligvis i forskellige farver, hvoraf de morkere almindeligvis er tilfredsstillende, men de lysere farver, især hvidt, og ikke-pigmenterede produkter er tilbojelige til at blive 15 misfarvede eller grâ pâ grund af de carbonholdige remanenser fra de forskellige tilsætningsstoffer og overfladeaktive stoffer, der almindeligvis findes i produktet, hvorfra over-trækkene stammer.These fluorocarbon polymer coatings are usually made in various colors, the darkers of which are generally satisfactory, but the lighter colors, especially white, and non-pigmented products are prone to becoming discolored or gray due to the carbonaceous residues of the various additives and surfactants commonly found in the product from which the coatings are derived.
Fra DE offentliggorelsesskrift nr. 2.328.057 og fra 20 US patentskrifterne nr. 2.906.730 og nr. 2.961.341 kendes der overtræksmaterialer indeholdende carbonfluoridpolymere, en flydende bærer, pigment samt et metaloxid eller til et metaloxid varmedekomponerbart metalsalt, hvor metallerne kan være Mo, Sn, Cu, Mn, Pb, Co, Cr og Cd, og hvor metalfor-25 bindelserne stabiliserer den polymère mod nedbrydning og misfarvning.DE Publication No. 2,328,057 and 20 US Patent Nos. 2,906,730 and 2,961,341 disclose coating materials containing hydrocarbon fluoride polymers, a liquid carrier, pigment, and a metal oxide or to a metal oxide heat-composable metal salt where the metals may be Mo. , Sn, Cu, Mn, Pb, Co, Cr and Cd, and where the metal compounds stabilize the polymer against degradation and discoloration.
Fra fransk patentskrift nr. 2.075.330 kendes der et overtræksmateriale indeholdende carbonfluoridpolymere, en flydende bærer og et metalsalt, f.eks. Th(1103)4, som er 30 varmedekomponerbart til Th02. Dette materiale indeholder ikke pigment.French Patent Specification No. 2,075,330 discloses a coating material containing carbon fluoride polymers, a liquid carrier and a metal salt, e.g. Th (1103) 4, which is heat-compatible to ThO 2. This material does not contain pigment.
Fra US patentskrift nr. 2.784.170 er det kendt at varmestabilisere carbonfluoridpolymere ved tilsætning af et til oxid varmedekomponerbart sait af Na, K, Bi, Li og Ag.From US Patent No. 2,784,170, it is known to heat stabilize carbon fluoride polymers by the addition of an oxide heat-composable site of Na, K, Bi, Li and Ag.
35 De ovennævnte, kendte overtræksmaterialer omfatter stabilisatorer (metaloxider, dekomponerbare metalsalte),The above-known known coating materials include stabilizers (metal oxides, decomposable metal salts),
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2 der forhindrer, at de polymère nedbrydes, hvorved de bibe-holder deres oprindelige farver.2 which prevents the polymers from decomposing thereby retaining their original colors.
Overtræksmaterialet if0lge den foreliggende opfin-delse, der er af den allerede angivne art, er ejendommeligt 5 ved, at det i det væsentlige bestâr af (a) 25-95 vægt% af en fluorcarbonpolymer, beregnet pâ den samlede mængde af (a), (c) og (d), (b) tilstrækkeligt af (i) et oxid eller hydroxid af cérium, cobalt, 10 jern eller mangan eller (ii) en forbindelse af de ovenfor anf0rte metal-ler, som senderdeles ved mellem 100 og 500°C, til dannelse af et oxid eller hydroxid, hvor-hos metalkoncentrationen i forbindelsen er 15 mindst 0,2 vægt%, til tilvejebringelse af en mængde metaloxid eller -hydroxid, der svarer til 0,01-5 vægtdele métal pr. 100 vægtdele af (a), (c) 3-60 vægt%, beregnet pâ den samlede mængde af 20 (a) , (c) og (d) , af en polymer af ethylenisk umættet monomer, der depolymeriserer, og hvis depolymerisationsprodukter fordamper i temperatur-omrâdet fra ca. 150°c under fusionstemperaturen for den anvendte fluorcarbonpolymer til ca. s0n-25 derdelingstemperaturen for fluorcarbonpolymeren, (d) eventuelt 2-40 vægt% pigment, beregnet pâ den samlede mængde af (a), (c) og (d)f samt (e) en flydende bærer.The coating material according to the present invention, which is of the kind already stated, is peculiar in that it consists essentially of (a) 25-95% by weight of a fluorocarbon polymer, calculated on the total amount of (a), (c) and (d), (b) sufficiently of (i) an oxide or hydroxide of cesium, cobalt, iron or manganese or (ii) a compound of the above-mentioned metals which are transmitted at between 100 and 500 ° C, to form an oxide or hydroxide wherein the metal concentration of the compound is at least 0.2% by weight to provide an amount of metal oxide or hydroxide corresponding to 0.01-5 parts by weight of metal per liter. 100 parts by weight of (a), (c) 3-60% by weight, based on the total amount of 20 (a), (c) and (d), of a polymer of ethylenically unsaturated monomer which depolymerizes and whose depolymerization products evaporate in the temperature range from approx. 150 ° C below the fusion temperature of the fluorocarbon polymer used to approx. the decomposition temperature of the fluorocarbon polymer, (d) optionally 2-40% by weight pigment, calculated on the total amount of (a), (c) and (d) f as well as (e) a liquid carrier.
Med dette overtræksmateriale undgâs den feromtalte 30 misfarvning eller grâfarvning i betydeligt omfang, og farvens renhed for0ges. I modsætning til stabiliseringseffekten, der opnâs i henhold til den ovenfor omtalte kendte teknik, bevirker kombinationen af bestanddelene i overtræksmaterialet if0lge opfindelsen, at man overraskende opnâr en katalyse 35 af scnderdelingen af den anvendte hjælpepolymer (c) , hvorved sammenlcbningen af det permanente fluorcarbonovertræksmate-With this coating material, the above-mentioned discoloration or gray discoloration is significantly avoided and the purity of the color is increased. In contrast to the stabilizing effect obtained according to the prior art, the combination of the components of the coating material according to the invention causes, surprisingly, to achieve a catalysis 35 of the partition of the auxiliary polymer (c) used, thereby combining the permanent fluorocarbon upper.
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3 riale for0ges. Hjælpepolymeren, f.eks. en acrylpolymer, depolymeriserer og fordamper og efterlader overtrækket med den onskede farve og det i 0vrigt 0nskede udseende. Der er sâledes if0lge opfindelsen ikke taie om en stabilisering af 5 farven, men en modsat effekt, nemlig destabilisering, depo-lymerisation og dekomponering af et additiv.3 rial is increased. The auxiliary polymer, e.g. an acrylic polymer, depolymerizes and evaporates, leaving the coating with the desired color and the otherwise desired appearance. Thus, according to the invention, it is not a matter of stabilizing the color, but of an opposite effect, namely destabilization, depolymerization and decomposition of an additive.
Det vil være klart, at de metalforbindelser (b) (ii), der er toksiske for mennesker, ikke b0r anvendes i produkter, som vil komme i beroring med fodevarer, og anvendelsen af 10 sâdanne forbindelser skal derfor begrænses til andre industrielle anvendelser.It will be clear that the metal compounds (b) (ii) which are toxic to humans should not be used in products which will come into contact with foodstuffs and the use of such compounds should therefore be limited to other industrial uses.
Typiske eksempler pâ de under (b) (ii) anfdrte forbindelser er nitraterne, nitritterne og saltene og halvsal-tene af mættede og umættede, monobasiske eller dibasiske 15 organiske syrer, fortrinsvis med 1-20 carbonatomer, f.eks. acetaterne og octoaterne.Typical examples of the compounds listed in (b) (ii) are the nitrates, nitrites and salts and the salts of saturated and unsaturated, monobasic or dibasic organic acids, preferably having 1-20 carbon atoms, e.g. the acetates and octoates.
Ceriumforbindelser er at foretrække pâ grund af deres effektivitet, og disse kan være i +3- eller +4-valenstil-standen. Særlig at foretrække er ceronitrat, ceroacetat og 20 cerooctoat.Cerium compounds are preferred because of their efficiency, and these may be in the + 3 or + 4 valence state. Particularly preferred are ceronitrate, ceroacetate and cerooctoate.
Koncentrationen af metalforbindelse (b) (ii) i over-træksmaterialet bestemmes af arten af forbindelsen, den grad af misfarvning, der forventes i det endelige produkt, og det omfang, i hvilket denne misfarvning 0nskes formind-25 sket. Forbindelsen skal som nævnt være til stede i en koncen-tration, der er tilstrækkelig h0j til dannelse af et oxid eller hydroxid i en mængde svarende til et metalækvivalent pâ 0,01-5 vægtdele pr. 100 vægtdele anvendt fluorcarbon-polymer, fortrinsvis 0,1-1 vægtdele. Den mængde af metalfor-30 bindelse, der kan anvendes, begrænses af den farve, som forbindelsen selv giver det endelige produkt, og det punkt, ved hvilken denne farve er uacceptabel.The concentration of metal compound (b) (ii) in the coating material is determined by the nature of the compound, the degree of discoloration expected in the final product and the extent to which this discoloration is desired to be diminished. As mentioned, the compound must be present in a concentration sufficiently high to form an oxide or hydroxide in an amount corresponding to a metal equivalent of 0.01-5 parts by weight per liter. 100 parts by weight of fluorocarbon polymer used, preferably 0.1-1 parts by weight. The amount of metal compound that can be used is limited by the color that the compound itself gives the final product and the point at which that color is unacceptable.
De fluorcarbonpolymere, der anvendes i produktet, er fortrinsvis polymère af carbonhydridmonomere, der er fuld-35 stændig substitueret med fluor-atomer eller en kombination af fluor- og chloratomer. Omfattet af denne gruppe er per-The fluorocarbon polymers used in the product are preferably polymers of hydrocarbon monomers which are completely substituted by fluorine atoms or a combination of fluorine and chlorine atoms. Included in this group are per-
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4 fluorolefin-polymere sâsom polytetrafluorethylen (PTFE) og copolymere af tetrafluorethylen og hexafluorpropylen i aile vaegtforhold mellem monomer-enheder, samt fluorchlorcarbon-polymere, f.eks. polymonochlortrifluorethylen, og copolymere 5 af tetrafluorethylen og perfluoralkylvinylethere. Blandinger af disse forbindelser kan ogsâ anvendes, men PTFE er at foretrække.4 fluorolefin polymers such as polytetrafluoroethylene (PTFE) and copolymers of tetrafluoroethylene and hexafluoropropylene in all weight ratios of monomer units, as well as fluorochlorocarbon polymers, e.g. polymonochlorotrifluoroethylene, and copolymers 5 of tetrafluoroethylene and perfluoroalkylvinyl ethers. Mixtures of these compounds can also be used, but PTFE is preferred.
De anvendte fluorcarbonpolymere er fortrinsvis par-tikelformede stoffer, og partiklerne bor være tilstrækkeligt 10 smâ til at kunne passere gennem dysen pâ en sprojtepistol uden at tilstoppe den og desuden tilstrækkeligt smâ til at g0re den fremkomne film sammenhængende.The fluorocarbon polymers used are preferably particulate matter, and the particles should be sufficiently small to pass through the nozzle of a spray gun without clogging it and, moreover, sufficiently small to make the resulting film cohesive.
Fluorcarbonpolymeren har fortrinsvis en molekylvægt pâ mindst 20.000, idet en polymer med en mindre molekylvægt 15 er tilb0jelig til at blive voksagtig og uegnet til anven-delse.The fluorocarbon polymer preferably has a molecular weight of at least 20,000, a polymer having a smaller molecular weight 15 being prone to becoming waxy and unsuitable for use.
Selv om et t0rt mel eller pulver af fluorcarbonpolymer kan anvendes, og en bærer kan tilvejebringes særskilt, er en polymer i form af en vandig, med overfladeaktivt middel 20 stabiliseret dispersion at foretrække pâ grund af sin sta-bilitet, og fordi den er lettest at fâ i denne form. Disper-sioner af fluorcarbonpolymere i organiske væsker sâsom alko-holer, ketoner, aliphatiske eller aromatiske carbonhydrider eller blandinger deraf kan ogsâ anvendes. I aile tilfælde 25 tjener væsken generelt som bærer for produktet.Although a dry flour or powder of fluorocarbon polymer can be used and a carrier can be provided separately, a polymer in the form of an aqueous, surfactant stabilized dispersion is preferable because of its stability and is the easiest to get in this form. Dispersions of fluorocarbon polymers in organic liquids such as alcohols, ketones, aliphatic or aromatic hydrocarbons or mixtures thereof may also be used. In all cases, the liquid generally serves as the carrier for the product.
Fluorcarbonpolymeren findes i produktet i en kon-centration pâ 25-95, fortrinsvis 70-80 vægt% af den samlede mængde af (a) fluor carbonpolymer, (d) pigment og (c) polymère hjælpestoffer. Hvis der kun er fluorcarbon og hjælpestof 30 til stede, vil koncentrationen være beregnet pâ den samlede mængde af disse. Hvis der ikke er pigment til stede, vil den mængde fluorcarbonpolymer, der skal anvendes, være be-stemt, for st0rstedelen, af den koncentration af terstoffer, der 0nskes i produktet, almindeligvis 10-80 vægt% af det 35 samlede produkt.The fluorocarbon polymer is present in the product at a concentration of 25-95, preferably 70-80% by weight of the total amount of (a) fluorocarbon polymer, (d) pigment and (c) polymeric auxiliary. If only fluorocarbon and excipient 30 are present, the concentration will be calculated on the total amount thereof. If no pigment is present, the amount of fluorocarbon polymer to be used will be determined, for the most part, by the concentration of terrains desired in the product, usually 10-80% by weight of the total product.
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Film med storre tæthed og lavere porositet og ud-visende bedre sammenlobningsevne fâs ved, at der i produktet anvendes det polymère hjælpestof (c).Films with higher density and lower porosity and exhibiting better cohesiveness are obtained by using the polymeric auxiliary (c).
Generelt er det polymère hjælpestof en hvilken som 5 helst polymer af ethylenisk umættet monomer, som depolyme-riserer, og hvis depolymerisationsprodukter fordamper i temperaturomrâdet fra ca. 150°C under fusionstemperaturen for den anvendte fluorcarbonpolymer til ca. sonderdelings-temperaturen for fluorcarbonpolymeren. Jo tættere depolyme-10 risations- og fordampningstemperaturerne ligger ved fluor-carbonens fusionstemperatur, des bedre.In general, the polymeric auxiliary is any polymer of ethylenically unsaturated monomer which depolymerizes and whose depolymerization products evaporate in the temperature range of about 5%. 150 ° C below the fusion temperature of the fluorocarbon polymer used to approx. the splitting temperature of the fluorocarbon polymer. The closer the depolymerization and evaporation temperatures are to the fusion temperature of the fluorocarbon, the better.
Med "depolymerisation" menes sonderdeling af polymeren ved det punkt, hvor sonderdelingsprodukterne er flygtige ved de temperaturer, der optræder ved hærdning af filmen.By "depolymerization" is meant probe splitting of the polymer at the point where the probe splitting products are volatile at the temperatures encountered in curing the film.
15 Disse S0nderdelingsprodukter kan være monomère, dimere eller oligomere.These decomposition products may be monomers, dimers or oligomers.
Med "fordampning" menes flygtiggorelse af sonder-delingsprodukterne og afdampning af dem fra filmen. Ideelt forlader aile sonderdelingsprodukterne filmen, men i praksis 20 bliver der almindeligvis en lille, men ubetydelig mængde tilbage.By "evaporation" is meant volatilization of the probe-sharing products and evaporation of them from the film. Ideally, all of the probe splitting products leave the film, but in practice, a small but insignificant amount is usually left.
Typiske eksempler pâ de polymère hjælpestoffer, der kan anvendes, er polymère af ethylenisk umættede monomère, der indeholder en eller flere monoethylenisk umættede syre-25 enheder.Typical examples of the polymeric auxiliaries that can be used are polymers of ethylenically unsaturated monomers containing one or more monoethylenically unsaturated acid units.
Eksempler pâ disse ethylenisk umættede monomère er alkylacrylater og -methacrylater med 1-8 carbonatomer i alkylgruppen, styren, α-methylstyren og vinyltoluen. Alkylacrylater og -methacrylater er at foretrække, fordi deres 30 s0nderdelingstemperaturer ligger tæt ved fusionstemperaturen for PTFE.Examples of these ethylenically unsaturated monomers are alkyl acrylates and methacrylates having 1-8 carbon atoms in the alkyl group, styrene, α-methylstyrene and vinyltoluene. Alkyl acrylates and methacrylates are preferred because their 30 decomposition temperatures are close to the fusion temperature of PTFE.
Eksempler pâ de monoethylenisk umættede syrer er acrylsyre, methacrylsyre, fumarsyre, itaconsyre og maleinsyre (eller anhydridet deraf), og acrylsyre og methacrylsyre er 35 at foretrække pâ grund af deres lette tilgængelighed.Examples of the monoethylenically unsaturated acids are acrylic acid, methacrylic acid, fumaric acid, itaconic acid and maleic acid (or the anhydride thereof), and acrylic acid and methacrylic acid are preferred because of their easy accessibility.
De foretrukne polymère hjælpestoffer er f0lgende:The preferred polymeric auxiliaries are as follows:
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6 1. methylmethacrylat/2-ethylhexylacrylat/methacryl-syre-terpolymere, fortrinsvis 35-50/40-60/1-15-terpolymerene (vægtforhold), og 2. methylmethacrylat/ethylacrylat/methacrylsyre/ter- ',5 polymère, fortrinsvis 30-45/45-30/1-15-terpoly- merene.6 the methyl methacrylate / 2-ethylhexyl acrylate / methacrylic acid terpolymers, preferably the 35-50 / 40-60 / 1-15 terpolymers (weight ratio), and 2. the methyl methacrylate / ethyl acrylate / methacrylic acid / ter, polymer, preferably 30-45 / 45-30 / 1-15 terpolymers.
^ Blandinger af hjælpestoffer kan ogsâ anvendes.^ Mixtures of excipients may also be used.
\ Det polymère hjælpestof er til stede i produktet i en koncentration pâ mellem 3 og 60 vægt% af den samlede 10 mængde af (a) , (c) og (d) , jfr. ovenfor, fortrinsvis 4-30 og især 4-15%. Hvis der er pigment til stede, vil koncentra-tionen være baseret pâ den samlede vægtmængde af (a) fluor-carbonpolymer, (c) hjælpestof og (d) pigment.The polymeric excipient is present in the product at a concentration of between 3 and 60% by weight of the total 10 amounts of (a), (c) and (d), cf. above, preferably 4-30 and especially 4-15%. If pigment is present, the concentration will be based on the total weight amount of (a) fluorocarbon polymer, (c) excipient and (d) pigment.
Det polymère hjælpestof kan være fremstillet efter 15 en hvilken som helst af de sædvanlige metoder med frie ra-dikaler, der er kendt af enhver polymer-kemiker.The polymeric auxiliary can be prepared according to any of the usual free radical methods known to any polymer chemist.
Produktet ifdlge den foreliggende opfindelse kan være pigmenteret eller ikke-pigmenteret, og der kan anvendes et hvilket som helst pigment, der almindeligvis anvendes i 20 denne slags produkter, selv om fordelene ved opfindelsen formindskes, hvis der anvendes morkere schatteringer. Hvide pigmenter er at foretrække, og typiske eksempler pâ disse er titandioxid, aluminiumoxid og silica, hvoraf titandioxid er særlig at foretrække pâ grund af dets dækkeevne.The product of the present invention may be pigmented or non-pigmented, and any pigment commonly used in this kind of products may be used, although the benefits of the invention are diminished if darker shading is used. White pigments are preferred, and typical examples of these are titanium dioxide, alumina and silica, of which titanium dioxide is particularly preferred because of its coverability.
25 Pigmenterne er til stede i koncentrationer pâ mellem 2 og 40 vægt% af den samlede mængde af (a), (c) og (d), fortrinsvis 5-15%.The pigments are present in concentrations of between 2 and 40% by weight of the total amount of (a), (c) and (d), preferably 5-15%.
Produktet ifolge opfindelsen kan ogsâ indeholde sâ-danne sædvanlige additiver som strdmningsregulerende midler, 30 overfladeaktive midler, blodgorere, sammenlobningsmidler etc., der synes nodvendige eller onskelige. Disse additiver tilsættes af de sædvanlige grunde pâ sædvanlig mâde og i sædvanlige mængder.The product of the invention may also contain such usual additives as flow regulators, surfactants, blood gurus, coagulants, etc. which appear necessary or desirable. These additives are added for the usual reasons in the usual manner and in the usual amounts.
Mængden af samlede tdrstoffer i produktet if0lge 35 opfindelsen bestemmes af det underlag, hvorpâ produktet skal pâfdres, pâf0ringsmâden, hærdningsmetoderne og lignendeThe amount of total dry matter in the product according to the invention is determined by the substrate on which the product is to be applied, the method of application, the curing methods and the like.
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7 faktorer. Almindeligvis vil produktet indeholde mellem 10 og 80 vægt% samlede tdrstoffer.7 factors. Generally, the product will contain between 10 and 80% by weight of total dry matter.
Produktet ifdlge opfindelsen kan fremstilles ved, at man fdrst vælger fluor car bonpolymeren,, det polymère hjælpe-5 stof, metalforbindelsen, pigmentet ©g sâdanne sædvanlige additiver, som dnskes anvendt, og de mængder af disse, der er bedst egnede til formâlet. Dette Ican g0res uden besvaer af en sagkyndig under anvendelse af velkendte principper for sammensætningen.The product according to the invention can be prepared by first choosing the fluorocarbon polymer, the polymeric auxiliary, the metal compound, the pigment © and the usual additives which are used and the amounts of these which are best suited for the purpose. This Ican is done without a hassle by an expert using well-known principles of composition.
10 Fremstillingen af produktet er derefter blot et sp0rgsmâl om at fremstille en formalingsbasis med pigmentet (under anvendelse af kendt standard-teknik), sammenblanding af metalforbindelsen og denne formalingsbasis og derpâ f0l-gende sammenblanding af formalingsgrundlaget og de 0vrige 15 komponenter.The preparation of the product is then merely a matter of preparing a grinding base with the pigment (using known standard techniques), mixing the metal compound and this grinding base, and then mixing the grinding base and the other 15 components.
Produktet vil være af storst betyning til top-over-trækning af metalkogegrej, især stegepander, men det kan lige sâ godt anvendes til andre metalgenstande, der kræver glatte overflader, sâsom lejer, ventiler, metaltrâd, metal-20 folie, kogere, r0r, skibsbunde, ovnforinger, jern-bundplader, vaffeljern, isterningsbakker, sneskovle og -plove, slidsker, transport0rer, mundstykker og værktoj af forskellig art sâsom save, file og bor, samt tragte og andre industrielle beholdere og forme.The product will be of the greatest importance for top-coating metal cookware, especially frying pans, but it can equally well be used for other metal objects requiring smooth surfaces, such as bearings, valves, metal thread, metal foil, cookers, tubes, ship bottoms, furnace liners, iron baseplates, waffle iron, ice cube trays, snow blades and plows, slides, conveyors, mouthpieces and tools of various kinds such as saws, files and drills, as well as hoppers and other industrial containers and molds.
25 Produktet ifdlge opfindelsen kan pâf0res pâ en hvilken som helst almindelig mâde, og spr0jtning, valse-pâfdring, dypning og rakel-pâforing er aile anvendelige, selv om spr0jtning almindeligvis er den metode, der vælges.The product according to the invention can be applied in any conventional manner, and spraying, roller application, dipping and squeegee application are all applicable, although spraying is generally the method of choice.
Den genstand, der skal overtrækkes, forbehandles 30 fortrinsvis ved sandblæsning, flammesprdjtning af metaller eller fritte-overtrækning, hvorefter den grundes med et produkt af kendt type.The article to be coated is preferably pretreated by sand blasting, flame spraying of metals or frit coating, after which it is primed with a product of known type.
Produktet pâfdres til en tykkelse pâ mellem ca. 0,0125 og ca. 0,125 mm (i t0r tilstand) og ovntorres derefter i et 35 tidsrum og ved en temperatur, der er tilstrækkelig til sam-The product is sprung to a thickness of between approx. 0.0125 and approx. 0.125 mm (in dry state) and then oven dried for a period of time and at a temperature sufficient for co-operation.
DK 157306 BDK 157306 B
8 mensmeltning eller hærdning af den anvendte fluorcarbon-polymer.8 while melting or curing the fluorocarbon polymer used.
Det f0lgende eksempel tjener til nærmere illustration af opfindelsen.The following example serves to illustrate the invention in greater detail.
55
EksempelExample
Et overtræksmateriale, der er et eksempel pâ et pro-dukt ifdlge opfindelsen, fremstilles ved, at der f0rst dannes et grundlag ved sammenblanding af 223,02 vægtdele vand, 10 2,00 vægtdele natriumpolynaphthalensulfonat og 180,86 vægt dele titandioxid i den nævnte rækkefolge og derpâ folgende formaling i kuglemolle, og i dette grundlag oploses 23,39 vægtdele Ce(NC>3) ,6H2O. (Ce(N03) 3,6H20 sonderdeles ved ca.A coating material which is an example of a product according to the invention is prepared by first forming a basis by mixing 223.02 parts by weight of water, 10 2.00 parts by weight of sodium polynaphthalene sulphonate and 180.86 parts by weight of titanium dioxide in said order and then milling in ball mill, and in this basis dissolve 23.39 parts by weight of Ce (NC> 3), 6H (Ce (NO3) 3.6H2O probes at ca.
200°C). Under sammenblanding sættes derefter langsomt denne 15 opslæmning til 2853,9 vægtdele af en dispersion af PTFE i vand med 60% torstof og indeholdende 6 vægt% isooctylphen-oxypolyethoxyethanol. Derefter sammenblandes 120,2 vægtdele triethanolamin, 72,8 vægtdele oliesyre, 214,94 vægtdele toluen og 72,1 vægtdele butylcarbitol i den nævnte rækkefdl-20 ge, og denne blanding sættes langsomt til PTFE-dispersionen under gennemblanding. Til det herved fremkomne produkt sættes derpâ langsomt under gennemblanding 625,8 vægtdele af en vandig dispersion (40% tdrstof) af en methylmethacrylat/-ethylacrylat/methacrylsyre-terpolymer (39/57/4). Til sidst 25 sættes der til det herved fremkomne produkt langsomt under gennemblanding 39,3 vægtdele vand. Den acryliske hjælpepo-lymer depolymeriserer ved ca. 325 til ca. 365°C, og PTFE-fluorcarbonpolymeren sintrer ved 415-425°C og sonderdeles ved 550-570°C.200 ° C). Then, during mixing, this slurry is slowly added to 2853.9 parts by weight of a dispersion of PTFE in water with 60% solids and containing 6% by weight isooctylphenoxypolyethoxyethanol. Then, 120.2 parts by weight of triethanolamine, 72.8 parts by weight of oleic acid, 214.94 parts by weight of toluene and 72.1 parts by weight of butyl carbitol are mixed in said order, and this mixture is slowly added to the PTFE dispersion with mixing. 625.8 parts by weight of an aqueous dispersion (40% solids) of a methyl methacrylate / ethyl acrylate / methacrylic acid terpolymer (39/57/4) is added slowly to the resulting product. Finally, to the resulting product, 39.3 parts by weight of water are slowly added to the resulting product. The acrylic auxiliary polymer depolymerizes at approx. 325 to approx. 365 ° C and the PTFE fluorocarbon polymer sinters at 415-425 ° C and probes at 550-570 ° C.
30 Det herved fremkomne overtræksmateriale sprojtes til en tykkelse pâ 0,025 mm (t0r tilstand) pâ en fritte-over-trukket aluminiumpande, der er grundet pâ kendt mâde, hvor-efter panden ovntdrres i 5 minutter ved 430°C.The resulting coating material is sprayed to a thickness of 0.025 mm (dry state) on a fryer-coated aluminum pan, which is primed in a known manner, after which the pan is heated for 5 minutes at 430 ° C.
Det herved fremkomne hvide overtræk vil vise betydelig 35 mindre misfarvning end det samme overtræk uden ceronitratet.The resulting white coating will show significantly less discoloration than the same coating without the ceronitrate.
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45763874A | 1974-04-03 | 1974-04-03 | |
| US45763874 | 1974-04-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK140175A DK140175A (en) | 1975-10-04 |
| DK157306B true DK157306B (en) | 1989-12-04 |
| DK157306C DK157306C (en) | 1990-04-23 |
Family
ID=23817537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK140175A DK157306C (en) | 1974-04-03 | 1975-04-02 | COATING MATERIALS CONTAINING A FLUORCARBON POLYMER, A FLOATING CARRIER AND A METAL OXIDE OR HYDROXIDE OR ANY HEAT COMPOSIBLE METAL COMPOUND AND ANY PIGMENT |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5437905B2 (en) |
| AU (1) | AU497989B2 (en) |
| BE (1) | BE827478A (en) |
| CA (1) | CA1080382A (en) |
| DE (1) | DE2514647C3 (en) |
| DK (1) | DK157306C (en) |
| FR (1) | FR2266722B1 (en) |
| GB (2) | GB1510022A (en) |
| IE (1) | IE42146B1 (en) |
| IT (1) | IT1048805B (en) |
| LU (1) | LU72190A1 (en) |
| NL (1) | NL161801C (en) |
| SE (1) | SE409211B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1077635A (en) * | 1976-03-11 | 1980-05-13 | E.I. Du Pont De Nemours And Company | Polyarylene sulfide resin coating composition |
| JPS5566942A (en) * | 1978-11-14 | 1980-05-20 | Du Pont Mitsui Fluorochem Co Ltd | Tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer powder for powder processing |
| DE2906787A1 (en) * | 1979-02-22 | 1980-09-04 | Hoechst Ag | COATING AGENT BASED ON A COPOLYMER FROM TETRAFLUORETHYLENE AND A PERFLUOR (ALKYLVINYL) ETHER |
| JPS59193947A (en) * | 1983-04-19 | 1984-11-02 | Ishikawajima Harima Heavy Ind Co Ltd | Flame-retardant resin for use in oxygen atmosphere |
| GB2172296B (en) * | 1985-03-15 | 1988-07-06 | Ae Plc | Plain bearing material incorporating polytetrafluoroethylene and plain bearings incorporating such a material |
| JPH01236255A (en) * | 1987-07-30 | 1989-09-21 | Tokyo Silicone Kk | Fluorocarbon resin paint, vessel coated therewith for heating food and heat roller coated therewith of copying machine |
| FR2897252B1 (en) * | 2006-02-14 | 2008-04-18 | Seb Sa | ENAMELLED AND ANODIZED CULINARY ARTICLE AND METHOD OF MANUFACTURING SUCH ARTICLE |
| US8309641B2 (en) * | 2010-08-13 | 2012-11-13 | E I Du Pont De Nemours And Company | Curable fluoroelastomer compositions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2784170A (en) * | 1953-04-23 | 1957-03-05 | Union Carbide & Carbon Corp | Heat-stabilized polychlorotrifluoro-ethylene utilizing metal nitrites |
| US2906730A (en) * | 1956-08-16 | 1959-09-29 | Minnesota Mining & Mfg | Polytrifluorochloroethylene and cobaltic oxide or cobaltic sulfide |
| US2961341A (en) * | 1958-04-15 | 1960-11-22 | Minnesota Mining & Mfg | Perfluorochloroolefin primer composition, method of coating therewith and article produced thereby |
| US3386859A (en) * | 1964-11-04 | 1968-06-04 | Union Oil Co | Porous electrode comprising hydrophobic binder and hydrophilic material incorporated therein and method of fabricating same |
| FR2075330A5 (en) * | 1970-01-09 | 1971-10-08 | Montedison Spa | |
| DE2328057A1 (en) * | 1972-06-02 | 1973-12-13 | Du Pont | STORAGE-STABLE FILLER-BASED AQUATIC TETRAFLUORAETHYLENE POLYMER DISPERSION |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3266477A (en) * | 1964-04-15 | 1966-08-16 | Du Pont | Self-cleaning cooking apparatus |
| GB1064840A (en) * | 1964-11-23 | 1967-04-12 | Du Pont | Tetrafluoroethylene/hexafluoropropylene copolymer dispersions |
| NL6903738A (en) * | 1968-04-11 | 1969-10-14 | ||
| US3700627A (en) * | 1970-05-25 | 1972-10-24 | Pennwalt Corp | Decolorized polytetrafluoroethylene |
| JPS5221532A (en) * | 1975-08-12 | 1977-02-18 | Nissan Motor Co Ltd | Exhaust gas reflux controller |
-
1975
- 1975-03-28 IT IT21870/75A patent/IT1048805B/en active
- 1975-04-01 AU AU79670/75A patent/AU497989B2/en not_active Expired
- 1975-04-01 CA CA223,459A patent/CA1080382A/en not_active Expired
- 1975-04-02 SE SE7503765A patent/SE409211B/en not_active IP Right Cessation
- 1975-04-02 DK DK140175A patent/DK157306C/en not_active IP Right Cessation
- 1975-04-02 BE BE155022A patent/BE827478A/en not_active IP Right Cessation
- 1975-04-02 LU LU72190A patent/LU72190A1/xx unknown
- 1975-04-03 DE DE2514647A patent/DE2514647C3/en not_active Expired
- 1975-04-03 IE IE747/75A patent/IE42146B1/en unknown
- 1975-04-03 FR FR7510476A patent/FR2266722B1/fr not_active Expired
- 1975-04-03 JP JP4074575A patent/JPS5437905B2/ja not_active Expired
- 1975-04-03 NL NL7503980.A patent/NL161801C/en not_active IP Right Cessation
- 1975-04-03 GB GB13682/75A patent/GB1510022A/en not_active Expired
- 1975-04-03 GB GB48113/77A patent/GB1510023A/en not_active Expired
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2784170A (en) * | 1953-04-23 | 1957-03-05 | Union Carbide & Carbon Corp | Heat-stabilized polychlorotrifluoro-ethylene utilizing metal nitrites |
| US2906730A (en) * | 1956-08-16 | 1959-09-29 | Minnesota Mining & Mfg | Polytrifluorochloroethylene and cobaltic oxide or cobaltic sulfide |
| US2961341A (en) * | 1958-04-15 | 1960-11-22 | Minnesota Mining & Mfg | Perfluorochloroolefin primer composition, method of coating therewith and article produced thereby |
| US3386859A (en) * | 1964-11-04 | 1968-06-04 | Union Oil Co | Porous electrode comprising hydrophobic binder and hydrophilic material incorporated therein and method of fabricating same |
| FR2075330A5 (en) * | 1970-01-09 | 1971-10-08 | Montedison Spa | |
| DE2328057A1 (en) * | 1972-06-02 | 1973-12-13 | Du Pont | STORAGE-STABLE FILLER-BASED AQUATIC TETRAFLUORAETHYLENE POLYMER DISPERSION |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7503980A (en) | 1975-10-07 |
| BE827478A (en) | 1975-10-02 |
| NL161801C (en) | 1980-03-17 |
| AU7967075A (en) | 1976-10-07 |
| FR2266722B1 (en) | 1979-02-23 |
| IE42146L (en) | 1975-10-03 |
| JPS50135152A (en) | 1975-10-27 |
| GB1510022A (en) | 1978-05-10 |
| NL161801B (en) | 1979-10-15 |
| AU497989B2 (en) | 1979-02-01 |
| DK140175A (en) | 1975-10-04 |
| DE2514647A1 (en) | 1975-10-09 |
| DE2514647B2 (en) | 1981-03-19 |
| SE7503765L (en) | 1975-10-06 |
| SE409211B (en) | 1979-08-06 |
| DE2514647C3 (en) | 1982-05-19 |
| JPS5437905B2 (en) | 1979-11-17 |
| LU72190A1 (en) | 1976-03-02 |
| GB1510023A (en) | 1978-05-10 |
| IE42146B1 (en) | 1980-06-18 |
| IT1048805B (en) | 1980-12-20 |
| FR2266722A1 (en) | 1975-10-31 |
| DK157306C (en) | 1990-04-23 |
| CA1080382A (en) | 1980-06-24 |
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| Date | Code | Title | Description |
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| PBP | Patent lapsed |