E.i. Dupont De Nemours and Company

Basil V Gregorovich

Isidor Hazan

Lech Wilczek

Hisanori Omura

George K Kodokian

Robert R Matheson

Wallace R Brasen

Glenn E Gerhardt

Stuart N Milligan

Hasan Dindi

Michael Charles Grady

George Wyatt Prejean

Rashi Akki

Idisor Hazan

James J Sanderson

The invention is directed to a process for making a reactive silane oligomer having low polydispersity, viscosity and volatility. The process utilizes reacting unsymmetrical difunctional silane monomers with water, diol monomers, or a combination thereof to make the reactive silane oligomer. The unsymmetrical difunctional silane monomers are with silane reactive groups having significantly different reactivities. Use of such reactive silane oligomers results in multi-component coating compositions having high miscibility, low VOC, low viscosity and high percentage of solids.

Process for producing reactive silane oligomers

A heated substrate is dipped into a fluidized bed containing particles of polymer to coat the substrate. The coating can subsequently be leveled (and cured if thermosetting) by heating the coated substrate above the melting point of the polymer. The process can be employed to provide desirable properties such as corrosion resistance and aesthetic qualities to the substrate, and to apply very thin coatings.

Process for applying polymer particles on substrate and coatings resulting therefrom

A sprayable coating composition that contains at least one soluble film-forming silicon-containing compound having, on average, more than one fuctionalized silicon group, a volatile organic carrier, a polymer microparticle component, and a catalyst; a substrate coated with the composition; a process for coating the substrate to provide a protective finish; the finish-protected substrate; certain oligomeric compounds and a process therefor.

Coating composition containing silane functionality

A coating comprising the silated reaction product of R.sup.1 (OH).sub.m and OCN(CH.sub.2).sub.t SiR.sup.4 (OR.sup.5).sub.2 and/or R.sup.2 --(SiYX.sub.2).sub.n ; a graft copolymer having an acrylic polymer based backbone and stabilizing arms comprising ethylenically unsaturated monomer, the backbone being insoluble and the arms being soluble in the composition; a melamine crosslinker; and an acrylic polyol; m, n, t, R.sup.1, R.sup.2 R.sup.4, R.sup.5, X and Y being defined in the text.

Coatings that contain reactive silicon oligomers

This invention concerns a process for imparting corrosion and creep resistance to a coating prepared from a particulate polymer composition and applied from a fluidized bed or by electrostatic spraying over metal substrates. The process of the present invention provides for maintaining the content of acid functionality of an acid-functionalized semicrystalline or acid-functionalized amorphous particulate polymer of the particulate polymer composition within a desired range. The acid functionality on the particulate polymer can be maintained, by crosslinking and/or neutralizing, within a desired range of the acid content which results in imparting corrosion and creep resistance to the coating applied over the metal substrates. Neutralizing the acid functionality of the polymer component results in hardening the coatings resulting therefrom. The process further provides for adding anticorrosive pigments to the composition for further improving corrosion resistance of the resultant coatings.

Process for producing corrosion- and creep resistant coatings

New adducts are produced from the reaction of vinyl dioxo compounds with anhydrides, epoxyesters, lactones, and lactams, and such adducts are useful for preparing curable coating compositions.

Reactive adducts of vinyldioxo compounds

Adducts of vinyldioxo compounds comprising a crosslinkable silyl-functional terminal group are disclosed. Such adducts are useful for preparing curable coating compositions.

Organosilicon compounds are described which contain a cyclic organic moiety between at least two reactive silane groups. The compounds are useful in coatings, adhesives, and sealants, and the like.

Reactive organosilicon compounds

An improved process for preparing a vinyl-substituted dioxo compound, in which process a vinyl aldehyde is reacted with a compound having three or more hydroxyl groups. In particular, the reaction is carried out, using an acid catalyst, in an organic solvent comprising an aliphatic solvent which forms a binary azeotrope with water as the reaction is driven to completion.

Process for the synthesis of vinyldioxo compounds

A method for hydrosilylating an olefinically unsaturated compound comprising contacting the unsaturated compound with a source of silicon in the presence of an azo-containing free-radical catalyst, the hydrosilylated product being a useful crosslinking agent.

Hydrosilylation of unsaturated compounds

A process for preparing acrylic polymers having good crater resistance by continuous polymerization in vessels having agitating means tip speed from 500 to 1200 rpm. Placement of the feed valve for charging the monomer and/or the initiator is located beneath the surface of the agitating mass.

Clear coat resins by continuous polymerization

A process for making high solids acrylic dispersion lacquer coating composition having an acrylic polymer binder content of about 25-45% by weight in a nonaqueous medium; wherein the acrylic polymer is a blend of

Process for making high solids acrylic dispersion lacquer

A high solids acrylic dispersion lacquer coating composition having an acrylic polymer binder content of about 25-45% by weight in a nonaqueous medium; wherein the acrylic polymer is a blend of

High solids acrylic dispersion lacquer

The aqueous thermosetting acrylic coating composition contains the following film-forming constituents:

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Wilmington, DE, United States of America

Basil V Gregorovich