KATHON LXE PDF
Formaldehyde-free, low toxicity, biodegradable biocide. Used as in-can preservative for a wide range of adhesives and silicone emulsions. Provides both . Product name: KATHON™ WT % BIOCIDE. Recommended use of the chemical and restrictions on use. Identified uses: Biocidal product. Kathon lxe biocide – Download as PDF File .pdf), Text File .txt) or read online. Kathon lxe biocide.
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Currently, beading effect is achieved by adding additives to reduce surface tension of paint films. Among them, wax emulsion is the most popular one. However, the beading efficiency of the emulsified wax which can provide beading effect is because wax can migrate onto the dried coating film surface and reduce surface tension, which will make the stains hardly wet coating film. This phenomenon is called stain repellency or beading effect. Anything stops wax migrating onto the coating film lxw will reduce beading efficiency.
So it is not difficult to understand that the katgon efficiency of wax emulsion is influenced substantially by the coating formulation. For example, when PVC of formulations is increased, higher level of wax emulsion has to be used to achieve beading effect, but such high level of wax emulsion usage compromises other performances of coating films. Surprisingly, it has been found that using polymer-encapsulated pigments partially or fully replaces mineral pigments in a water based paint formulation can improve the beading efficiency of wax emulsions.
On the other side, the wax level could be decreased to avoid compromising performance of coating film and save cost.
For the purpose of describing the components in the lex of the present invention, all phrases comprising parenthesis lxf either or both of the katnon parenthetical matter xle its absence. This is a volume average particle size. In the case of a kxe polymer, the reported Tg value shall be the weighted average of the observed inflection points in the thermogram. The aqueous coating composition with improved stain resistance in the present invention comprises a pigment composition, including 15 wt.
In one embodiment of the present invention, the polymer shell of the said polymer-encapsulated pigment has an average thickness of 10 nanometers to nanometers, preferably from nanometers, more preferably from nanometers. The MFFT measurement is carried out by drawing down a film of the dispersion onto a metal bar subjected to a thermal gradient and then passing dry air over the dispersion until the film is dry.
The MFFT is taken to be the minimum temperature where one observes a clear and crack-free film.
Kathon Lxe Import Data and Price to India –
It is not uncommon in the coatings industry to lathon that a substantial extent of polymer diffusion takes place at temperatures above but not far removed from the MFFT. The polymer shell composition, particle size, particle morphology and process to make such are described, un-exclusively, in for example U. Preferably, polymer-encapsulated pigments are made by oathon polymerization as taught in U.
The polymer shell encapsulating the polymer-encapsulated pigment comprises, kafhon least one copolymerized ethylenically unsaturated nonionic monomer.
Examples of these types of monomers are ethylenically unsaturated carboxylic or dicarboxylic acids, especially acrylic or methacrylic acid, itaconic acid, maleic acid, or the amides, especially N-alkylolamides or hydroxyalkyl esters of the above-mentioned carboxylic acids, such as meth acrylamide, N-methylol meth acrylamide, 2-hydroxyethyl meth acrylamide, hydroxyethyl meth acrylate, and hydroxypropyl meth acrylate. One or more surfactants, including anionic and nonionic surfactants, and mixtures thereof, are commonly used.
Sample Report for Indian Import Data of Kathon Lxe
Glen Rock, NFpublished annually. Other types of stabilizing agents, such as protective colloids, are optionally used. Polymer shell of the polymer-encapsulated pigment could also be comprised of other film formable polymers, like but not limited to polyurethane, epoxy resin, alkyd resin, or polyurethane-acrylic hybrid. Redox systems using the same initiators coupled with a suitable reductant such as, for example, sodium sulfoxylate formaldehyde, ascorbic acid, isoascorbic acid, alkali metal and ammonium salts of sulfur-containing acids, such as sodium sulfite, bisulfite, thiosulfate, hydrosulfite, sulfide, hydrosulfide or dithionite, formadinesulfinic acid, hydroxymethanesulfonic acid, acetone bisulfite, amines such as ethanolamine, glycolic acid, glyoxylic acid hydrate, lactic acid, glyceric acid, malic acid, tartaric acid and salts of the preceding acids may be used.
Redox reaction catalyzing metal salts of iron, copper, manganese, silver, platinum, vanadium, nickel, chromium, palladium, or cobalt may be used. Chelating agents for the metals may optionally be used. Chain transfer agent s may be added in one or more additions or continuously, linearly or not, over most or all of the entire reaction period or during limited portion s of the reaction period such as, for example, in the kettle charge and in the reduction of residual monomer stage.
A preferred level of chain transfer agent is from 0. The aqueous dispersion of the polymer-encapsulated pigment can further comprise functional substances, like crosslinking agent, biocide, UV absorption agent, and others.
The crosslinking agent could be similar to, but not limited to, the one disclosed in U. The pigment particles, as encapsulated, are inorganic pigment or extender. Such materials typically have a refractive index of greater than 1.
Preferred is titanium dioxide TiO 2. The solid polymeric particles have particle size from microns, preferably from microns. The existence of the polymer-encapsulated pigment is not limited to an aqueous dispersion. It could also be powder, or other which can be dispersed in the water per paint making and keep stable.
The preparation methods of the polymer-encapsulated pigment of the coating composition of the present invention can be any methods, familiar to the technical persons in the art. Suitable examples include, but not limited to those as disclosed in U.
In another embodiment of the present invention, the polymer-encapsulated pigment is prepared by first, dissolving the hydrophilic polymer in a suitable solvent; adding into the solution of the hydrophilic polymer the antimicrobial agent, preferably with agitation; adding the mixture of the antimicrobial agent in the hydrophilic polymer solution into an antisolvent, preferably with agitation; and finally, separating the polymer-encapsulated pigment from the liquid and dried.
Alternatively, the katyon pigment is prepared by treating the antimicrobial agent with a polymer precursor and then subsequent polymerization to prepare the hydrophilic polymer. Another method of preparation of the polymer-encapsulated pigment is the compounding of the antimicrobial agent with the hydrophilic polymer and subsequent grinding of the compounded product to the desired particle size.
In one embodiment, the polymer-encapsulated pigment of the coating composition of the present invention can be prepared according to the steps: Other methods for preparation the polymer-encapsulated pigment can also be used in the present invention, the above exemplary preparation methods are not for limitation. In paint formulation, the pigment and extenders are mixture and it is hard to estimate the CPVC of the mixture. The aqueous coating composition of the present invention comprises 0.
In addition to the aqueous coating composition preparation, it is contemplated the paraffin wax emulsion can be also added during the copolymer dispersion preparation.
Solids of the final paraffin wax emulsion can vary from 1 to 60 wt. PH of the emulsion can range from 6 to 10, typically 7. The final particle size is dependent on a number of variables including the homogenization which is used at the end of the process. Particle size of the paraffin wax emulsion can vary between 0. The particle size for paraffin wax alone is typically 0. The paraffin wax emulsion can also be a blend of paraffin wax with other llxe, such as polyethylene wax, carnauba wax, or ethylene acrylic acid.
Examples of blends from Michaelman Inc. Michem emulsiona blend of paraffin wax and polyethylene, Michem emulsiona blend of paraffin wax and ethylene acrylic lx, and Michem Lubea commercial blend lxee paraffin wax and carnauba wax.
The paraffin wax emulsion can be prepared by melting refined paraffin wax to a temperature above the melting point of the paraffin. Appropriate emulsifiers, such as stearic acid, oleic acid, diethylamine ethanol, 2-aminomethylpropanol, can then be stirred into the wax emulsion at the elevated temperature. A base, such as potassium hydroxide or ammonium hydroxide, can then be dissolved in ethylene glycol or water at elevated temperatures and slowly added to the wax blend while increasing agitation speed of the mixer.
After homogenization, the resulting emulsion is cooled, for example, through a heat exchanger, and then filtered and packaged. Michem EmulsionMichem EmulsionMichem ME or Michem MEsupplied by Michelman Inc, are examples of a commercially available paraffin wax emulsion that can be used in the blend of the present invention.
The amount of paraffin wax emulsion is in the range of 0. Higher level of paraffin wax emulsion may lead to a stronger repellency to hydrophilic stain. The paraffin wax is preferred here to be added as emulsion, but it could also be added by other methods. The aqueous coating composition of the present invention contains at least one conventional coatings adjuvant, including but not limited to, coalescing agents, cosolvents, surfactants, buffers, neutralizers, thickeners, non-thickening rheology modifiers, dispersants, humectants, wetting agents, midewcides, biocides, plasticizers, antifoaming agents, defoaming agents, anti-skinning agents, colorants, flowing agents, crosslinkers, anti-oxidants.
Thickeners for use herein include but not limited to polyvinyl alcohol PVAhydrophobically modified alkali soluble emulsions HASEalkali-soluble or alkali swellable emulsions ASEhydrophobically modified ethylene oxide-urethane polymers known in the art as HEUR, and cellulosic thickeners such as hydroxymethyl cellulose H MChydroxyethyl cellulose HEChydrophobically-modified hydroxy ethyl cellulose HMHECsodium carboxymethyl cellulose SCMCsodium carboxymethyl 2-hydroxyethyl cellulose,2-hydroxypropyl methyl cellulose, 2-hydroxyethyl methyl cellulose, 2-hydroxybutyl methyl cellulose, 2-hydroxyethyl ethyl cellulose, 2-hydoxypropyl cellulose.
Also useful as thickeners are fumed silica, attapulgite clay and other types of clay, titanate chelating agents. Dispersants for use herein include non-ionic, anionic and cationic dispersants such as polyacid with suitable molecular weight, 2-aminomethylpropanol AMPdimethyl amino ethanol DMAEpotassium tripolyphosphate KTPPtrisodium polyphosphate TSPPcitric acid and other carboxylic acids.
Prefer the polyacids with suitable molecular weight. The polyacids used here are such as homopolymers and copolymers based on polycarboxylic acids, including those that have been hydrophobically- or hydrophilically-modified, e.
The molecular weight of such polyacids dispersant is from to 50, or from to 30, prefer to 10, more prefer 1, to 5, and most prefer 1, to 3, Surfactants for use herein include anionic, nonionic, cationic surfactants and amphiphilic surfactant.
Prefer anionic and nonionic surfactants and more prefer nonionic surfactant. Or said water dispersible or soluble polymer could be epoxy polymer, poly urethane dispersion, polyurethane acrylic hybrid, alkyd polymer, hybrids or blends between those polymers.
Arihant Chemicals Resins India Pvt L Import Export Data – Import Export Company in
Chain transfer agents are optionally added to the aqueous reaction medium to control molecular weight of the polymer. Examples of chain transfer agents include mercaptans, polymercaptans, and polyhalogen compounds including alkyl mercaptans, such as ethyl mercaptan, n-propyl mercaptan, n-butyl mercaptan, isobutyl mercaptan, t-amyl mercaptan, n-hexyl mercaptan, cyclohexyl mercaptan, n-octyl mercaptan, n-decyl mercaptan, n-dodecyl mercaptan; 3-mercaptoproprionic acid; 2-hydroxyethyl mercaptan; alcohols, such as isopropanol, isobutanol, lauryl alcohol, and t-octyl alcohol; and halogenated compounds, such as carbon tetrachloride, tetrachloroethylene, and trichlorobromoethane.
The aqueous coating composition formulating involves the process of selecting and admixing appropriate coating ingredients in the correct proportions to provide a paint with specific processing and handling properties, as well as a final dry paint film with the desired properties. The aqueous coating composition may be applied by conventional application methods such as, for example, brushing, roller application, and spraying methods such as, for example, air-atomized spray, air-assisted spray, airless spray, high volume low pressure spray, and air-assisted airless spray.
Suitable substrates include, but not limited to, for example, concrete, cement board, MDF and particle board, gypsum board, wood, stone, metal, plastics, wall paper and textile, etc.
The aqueous coating composition and its application method may influence the effectivity of this patent. When the hydrophilic substances in aqueous coating compositions are too much, then the property of the liquid stain repellency is poor. Similarly, in its application, when the concentration of hydrophilic substances on the dry paint film surface is too much, the property of the liquid stain repellency is poor.
Hydrophilic stain repellency evaluates the difficulty of wetting the coating surface for hydrophilic stains. To determine the hydrophilic stain repellency, cast test paint on a black vinyl chart PN Lenetaor on the substrate of ceramic, metal, plastic, and cementitious panel. Let the paint to dry for 7 days.
Keeping the coated substrate vertical, allow the hydrophilic stain drops flow from the upper to bottom side of substrate coated with the test paint. Hydrophilic stain repellency is observed by eye and represented by the hydrophilic stain repellency No. A paint containing aqueous dispersion of polymer-encapsulated pigment Dispersion 1 was prepared using the following procedure to form the aqueous coating composition Paint 1.
The ingredients listed in Table 5 let down were added using a conventional lab mixer. A paint containing no polymer-encapsulated pigment was prepared using the following procedure to form the aqueous coating composition Paint 2. The ingredients listed in Table 6 grind were mixed using a high speed Cowles disperser. The ingredients listed in Table 6 let down were added using a conventional lab mixer. A paint containing aqueous dispersion of polymer-encapsulated pigment Dispersion 1 was prepared using the following procedure to form the aqueous coating composition Paint 3.
The ingredients listed in Table 7 grind were mixed using a high speed Cowles disperser. The ingredients listed in Table 7 let down were added using a conventional lab mixer. A paint containing no polymer-encapsulated pigment was prepared using the following procedure to form the aqueous coating composition Paint 4.
The ingredients listed in Table 8 grind were mixed using a high speed Cowles disperser. The ingredients listed in Table 8 let down were added using a conventional lab mixer. A paint xle aqueous dispersion of polymer-encapsulated pigment Dispersion 1 was prepared using the following procedure to form the aqueous coating composition Paint 5.