133results about "Thixotropic paints" patented technology

A low VOC, HAPs free, substantially non-aqueous slurry for use as a rheology modifier in aqueous systems including but not limited to latex paints. The slurry comprises a particulate water-swelling polymer such as hydroxyethyl cellulose, mineral oil carrier liquid, a non-ionic surfactant, a particulate thickening agent, a defoamer, and optionally an amine component.

One embodiment relates to a coating composition, comprising a novolac epoxy resin comprising silicon carbide powder; an amine curing agent, said agent comprising at least a cycloaliphatic amine; a hydrophobic silica thixotrope agent; and an aluminum oxide powder having the following mesh retention characteristics, based on the weight of the aluminum oxide powder: about 0 wt. % size 10 mesh, ≧ about 5 wt. % size 16 mesh, ≧ about 20 wt. % size 18 mesh, ≧ about 10 wt. % size 20 mesh, and ≦ about 5 wt. % size 30 mesh. Other embodiments relate to making and using the coating composition, and coatings made from the coating composition.

An environmentally benign anti-icing or deicing fluid providing long term protection for use on aircraft and runways, roads, bridges; and nautical, rail and automotive components. The composition is non-electrolytic, homogeneous single-phase, biodegradable comprising: water, non-toxic monohydric or polyhydric freezing point depressant alcohols having from 2 to 12 carbon atoms, present in an amount between 13 and 60 weight percent; a non-toxic exocellular polysaccharide thickener, present in an amount between 0.01 and 10 weight percent; and optionally a monohydric primary aliphatic unbranched alcohol as a means of forming a thin hydrophobic layer on the external surface of the composition to prevent moisture dilution. Compositions of the invention containing hygroscopic glycerin have exceptionally long duration icing protection and also anti-graffiti protection for applications on vertical surfaces where frictional loss is not critical. This invention also provides distinct functional improvements and cost advantages.

A liquid, pourable 100% active rheological additive especially useful for thickening non-aqueous compositions is described. The additive, which exists in a pourable form at up to a 100% as a rheologically active composition, exhibits excellent thickening efficiency for systems including inks, epoxies, polyesters, paints, greases and other systems, including ease of dispersibility, without adversely affecting gloss. The additive may operate by both an associative and a reaction mechanism to provide rheological viscosity properties to such systems, and is also similarly useful for aqueous systems. One important aspect of the present invention relates to a liquid rheological additive composition comprising a reaction product obtained from the reaction of: a) One or more active hydrogen compounds, wherein the active hydrogen compound contains at least two active hydrogen moieties; and b) One or more compounds containing at least two moieties which are capable of reacting with the active hydrogen moieties of (a), wherein the active hydrogen moieties of compound a) are in stoichiometric excess of the reactive moieties of compound b); and the reaction product has at least two active hydrogen moieties at its termini.

This invention relates to a method for removing contaminant material (e.g., graffiti) from a substrate, comprising: applying a coating composition to the substrate, the coating composition comprising water, a water-soluble film forming polymer, a wetting agent and a thixotropic additive; dehydrating the aqueous composition and / or crosslinking the polymer to form a sacrificial barrier coating; depositing the contaminant material on the barrier coating; and removing at least part of the barrier coating and the contaminant material from the substrate.

Disclosed are thixotropic compositions that are curable using ultraviolet and visible radiation. In addition, methods of applying the compositions to fiber substrates such as paper are described, as are methods of curing the coated products. Partially or fully water-resistant articles made using these compositions, such as snow melting mats, windshield protectors, and freezer defrosting sheets are also disclosed.

Disclosed is a pH responsive polymer made with mono-[2-(methacryloyloxy)ethyl]phthalate and / or mono-[2-(methacryloyloxy)ethyl hexahydro]phthalate. Also disclosed is an aqueous coating composition including at least one latex polymer derived from at least one monomer copolymerized or blended with alkali swellable acrylate copolymer. Also provided is an aqueous coating composition including at least one latex polymer derived from at least one monomer blended with alkali swellable acrylate copolymer, at least one pigment, and water. Also provided is a method of preparing an aqueous coating composition such as a latex paint including the above components. Also provided are methods of preparing mono-[2-(methacryloyloxy)ethyl]phthalate. Also provided are conpositions and methods using the polymer in hydraulic fracturing, personal care and or home and industrial cleaners.

The invention relates to a polymeric urea-urethane obtainable by first reacting a diisocyanate with a polyol to form a doubly NCO-terminated urethane prepolymer. Further reaction is subsequently carried out with a mixture of a primary monoamine and a primary diamine. After the second reaction the polymeric urea-urethane present is substantially free of isocyanate and of the monoamine and diamine used. It can be used as an agent for controlling the rheology of liquid polymers or polymer solutions.

The invention relates to a process for preparing a solution which comprises urea urethanes and is effective as a thixotropic agent, which involves reacting at least two structurally different monohydroxy compounds with an excess of toluylene diisocyanate to form monoisocyanate adducts, removing the unreacted portion of the toluylene diisocyanate, and reacting the resultant monoisocyanate adducts with diamines in an aprotic solvent in the presence of a lithium salt to form urea urethanes. The invention also relates to the use of the solution to receive thixotropic coating compositions.

The invention herein relates to a surface protective dendritic polymer composition and to the cross-linked surface protective coating formed therefrom.

Various non-limiting embodiments disclosed herein relate generally to aqueous-coating compositions and thickening systems that can be used in aqueous coating-compositions. More particularly, certain non-limiting embodiments disclosed herein relate to aqueous-coating compositions, such as latex paints, comprising xanthan gum and at least one ester of an unsaturated fatty acid that is essentially free of volatile organic compounds as determined by EPA Reference Method 24. Other non-limiting embodiments relate to thickening systems comprising a mixture of a xanthan gum and at least one ester of an unsaturated fatty acid, wherein the thickening system is essentially free of volatile organic compounds as determined by EPA Reference Method 24. Still other non-limiting embodiments relate to methods of making and using the aqueous coating-compositions and thickening systems disclosed herein.

Paint formulations that exhibit improved performance characteristics due to the presence of a combination of a cellulose ether (carboxymethylcellulose and / or hydroxyethylcellulose) and a network building polymer (gellan gum, carrageenan, etc., as examples) as a thickening system therein are provided. Such a combination permits long-term shelf stability of the paint formulation while simultaneously according effective flow, leveling, and other important properties to the final paint formulation. The combination of the cellulose ether and a network building polymer allows for a lower viscosity cellulosic compound to impart the desired rheological behavior therein while also permitting the other desirable characteristics noted above. Such paint compositions also exhibit improved atomization for spray applications with such a thickening system.

The present invention provides a coating composition containing a rheology control agent with improved rheology control properties, particularly in low VOC solventborne coating compositions and waterborne coating compositions for OEM, automotive and truck applications repainting or repainting of the exterior of a body and parts thereof; the rheology control agent used in said coating composition contains the following compound represented by the formula wherein A, B, C and D are CH 2 , CHR, NH, or O, and A, B, C, and D may be the same or different, at least one of A and B being NH, and at least one of C and D being NH; and wherein R 1 , R 2 and R 3 as defined in the specification.

One or more inkjet coating compositions and coated substrates are disclosed. The coating compositions may comprise a nanomilled aluminum trihydrate pigment and a binder. Also disclosed are methods forthe production of the coating composition and media substrates coated with the composition.

The present invention is directed to a rheology control agent for coating compositions. The rheology control agent includes a compound having the Formula (II) including isomers or mixtures of isomers thereof: wherein R, R9, R10, m and n are described in the specification. The coating compositions containing the rheology control agent have improved rheology control on application and are useful for OEM, refinishing or repainting the exterior of automobile and truck bodies and parts thereof.

The present invention provides a water-based coating and / or coating system that can be used to form sag resistant wet layers or coatings on a wide range of substrates. The coating system is particularly effective for protecting metal-containing substrates, such as intermodal cargo containers, against corrosion. As an overview, the present invention provides water-based compositions suitable to form primer coats on substrates. Desirably, the primer incorporates a high level of one or more CAS agents for excellent sag resistance while drying in a broad range of relative humidity environments. Alternatively, modifications can be made to control temperature and humidity during spray application and drying as a way to increase sag resistance of the coating.

The present invention describes an aqueous, non-electrolytic, non-toxic, biodegradable, continuous single phase liquid anti-icing or deicing composition for use on the surfaces of, for example, aircraft, airport pavements, roadways, walkways, bridges, entrances, structures, canals, locks, components, vessels, nautical components, railroad switches, and motor vehicles. The anti-icing or deicing composition comprises: (a) water; (b) a non-toxic freezing point depressant selected from the group consisting of monohydric alcohols having from 2 to 6 carbon atoms, polyhydric alcohols having from 3 to 12 carbon atoms, monomethyl or ethyl ethers of polyhydric alcohols having from 3 to 12 atoms or mixtures thereof, wherein the freezing point depressant present is between about 14 to 60 percent by weight; (c) a thickener which is present in between about 0.01 and 10 percent by weight; and (d) optionally a corrosion inhibitor which is present in between about 0.01 and 0.1 percent by weight of the total composition. In one embodiment, the deicing composition further includes (e) a monohydric primary aliphatic unbranched alcohol as a means of forming a thin layer on the surface of the composition applied to the structure to be given ice protection, and / or as means of forming a homogenized foam with xanthan thickener; which alcohol is selected from the group consisting of alcohols having between 8 to 24 carbon atoms, preferably, 1-dodecanol. Compositions of water, propylene glycol, and / or propanol and xanthan are preferred. In another embodiments compositions preferably containing a polyol, such as glycerin, are used to produce a coating on an object or surface to protect it from graffiti such as paint, lacquer, ink and the like.

The invention discloses an anti-sagging polyurethane waterproof coating comprising the following components in parts by weight: 20-25 parts of polyether glycol, 5-10 parts of isocyanate, 10-15 parts of a plasticizer, 18-20 parts of light calcium, 20-25 parts of heavy calcium, 0.5-1 part of a thixotropic agent and 0.5-1 part of a latent curing agent. The invention aims at providing the anti-sagging polyurethane waterproof coating suitable for vertical surfaces and slope surfaces, uniform in film formation and good in waterproof effect.

The invention discloses N-amino alkyl substituted glucosamide as well as a preparation method and an application thereof. The N-amino alkyl substituted glucosamide is shown in formula (I), wherein n=2, 4, 6, 8 or 12. Supra-molecular gel formed by the N-amino alkyl substituted glucosamide in a solvent has thermal reversibility and thixotropy. Two-component gel formed by the N-amino alkyl substituted glucosamide in a solvent also has thermal reversibility and thixotropy. The instantaneous response rate after thixotropy is high, full response can be realized, and the thixotropy process is reversible and can be repeated. Gel with thixotropy is expected to be used in fields of coating, paint, pigment and the like.

The present invention is a process for preparing an aqueous solution of a hydrophobically modified alkylene oxide poly(urethane-urea-allophanate) thickener by contacting isocyanate reactive groups with a stoichiometric excess of a diisocyanate, followed by reaction with water. The thickener surprisingly shows a maintenance or improvement in hiding in paint formulations while maintaining other critical rheological properties.

A paint composition includes microfibrillated cellulose, binder, and solvent. The microfibrillated cellulose may be present in an amount ranging from about 0.1% to about 10% by weight based on the total weight of the paint composition.

We have demonstrated reversibly reducing metal-ion crosslinkages in polymer systems, by harnessing light, creating a dynamic and reversible bond. The reduction induces chemical and physical changes inthe polymer materials. Some variations provide a polymer composition comprising: a polymer matrix containing one or more ionic species; one or more photosensitizers; and one or more metal ions capable of reversibly changing from a first oxidation state to a second oxidation state when in the presence of the photosensitizers and light. Some embodiments employ urethane-based ionomers capable of changing their crosslinked state under the influence of a change in counterion valance, using light or chemical reducing agents. The invention provides films, coatings, or objects that are reversible, re-mendable, self-healing, mechanically adjustable, and / or thermoplastic / thermosetswitchable.

The present invention relates to a composition comprising a hydrophobically modified alkylene oxide polyurethane characterized by having a M w of from 50,000 to about 150,000 Daltons and a polydispersity of 2.5 to about 5.0. The present invention further relates to a multi-step process for the preparation of the hydrophobically modified polymer.