E.i. Dupont De Nemours and Company

E. I. Du Pont Nemours and Co.

Starquartz Industries, Inc.

John A Simms

Darryl W Brixius

Sheau-Hwa Ma

Joel David Citron

Patrick Henry Corcoran

Loretta Ann Page

Michael W West

Douglas Matt Lamb

Lili W Altschuler

Christopher Warren

Aleksandr Sorser

Paul P Bruylants

Roland G Lindsey

Grout compositions having a binder including water-borne polyurethane and a filler are described herein. An accelerator component is provided to control the rate of grout curing, thereby decreasing the time required between grout application and grout use. This result is achieved while providing sufficient time for grout application. Grout may be light-transmissive and include light-transmissive binder and filler.

Polyurethane-containing grouts

Pigment dispersants prepared by reacting an isocyanate oligomer having an average functionality of at least three with a polyester or polyacrylate, a poly(ethylene glycol)alkyl ether, and a diamine having a primary amine and a tertiary amine have excellent stabilizing properties and offer a wide formulation latitude with a variety of solvent systems, including polar solvents and water, and are particularly useful as pigment dispersants for paints and coating applications.

Pigment dispersants formed by reacting an isocyanate with a poly (ethylene glycol) alkyl ether, a polyester or polyester or polyacrylate and a diamine

A polymeric pigment dispersant of a graft polymer having an acrylic polymer backbone and pending from the backbone, polyester side chains, cyclic imide groups and quaternary ammonium groups and the polymer having a calculated number average molecular weight of 8,000-50,000; wherein the graft copolymer is composed of

Polymeric pigment dispersant having an acrylic backbone, polyester side

An ink jet ink composition is provided which contains an aqueous vehicle; a colorant; and a polymeric dispersant comprising 2 to 50% by weight of monomers selected from .beta.-diketone containing monomers and ureido monomers, as well as a combination of such ink with a media having basic groups such as primary or secondary amines and divalent cations.

Smear resistant pigmented ink jet inks containing .beta.-diketone or

The polymeric pigment dispersants of this invention are polyester/acrylic comb polymers which are the reaction product of 20-85% of a carboxylic functional polyester copolymer, 10-50% of an oxirane substituted acrylic copolymer, and 2 to 20% of an imide compound. These materials disperse a wide variety of pigments and are useful in solvent borne coatings where they can provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.

Comb pigment dispersants

A coating composition primarily used as a clear coat of a clearcoat/color coat automotive finish; the composition has a film forming binder solids content of about 30-70% by weight contains about

Coating composition of an acrylic polymer, polyol and polyisocyanate

Crosslinkable coatings that contain a polyol component which is a caprolactone oligomer containing a cycloaliphatic moiety having improved properties, especially lower viscosity and improved coating hardness, and are useful for coating metals and plastics.

Coatings containing caprolactone oligomer polyols

A blend of a softer continuous phase polymer reinforced with harder acrylic star polymer particles having reactive functional groups with crosslinking ability built in or provided by a third polymer. The harder polymer has a T.sub.g at least 10.degree. C. above that of the softer polymer, and the acrylic star polymer is preferably made by group transfer polymerization. This blend provides coating compositions, films and bulk polymer with enhanced toughness and flexibility.

Tough flexible polymer blends

A curable silane resin, and a process for making same, having at least one of two units selected from the group consisting of a prepolymer (C) and a prepolymer (F); the prepolymer (C) having the formula (I): ##STR1## and the prepolymer (F) having the formula (III): ##STR2##

Silane coating composition for ambient cure

This invention relates to a process of polymerizing acrylic esters and, more specifically, to initiators which are useful therein.

Polymerization of acrylic esters

A coating composition that forms a flexible finish and is used primarily as a clear finish over a colored or pigmented finish that are applied to flexible substrates of automobile and truck bodies; the composition contains as the film forming binder (1) a branched aliphatic polyester urethane which is the reaction product of a polyisocyanate and a branched aliphatic polyester and (2) preferably a methylated and butylated melamine formaldehyde crosslinking agent.

Flexible finishes from branched aliphatic polyester urethanes and a

Disclosed is an improvement in the (co)polymerization of an isocyanate-containing monomer, e.g., an isocyanatoalkyl methacrylate, forming a product of very low residual toxic monomeric isocyanate (less than 500 ppm) useful in avoiding air pollution. The improvement consists in adding a scavenger, a small amount of an active nonpolluting monomer such as butyl acrylate, near the end of the polymerization.

Process for making isocyanate-functional polymers containing low

Articles comprising a substrate coated with selected isocyanatoalkyl (meth)acrylate polymers or copolymers, e.g., a copolymer of 2-isocyanatoalkyl methacrylate and butyl acrylate, are claimed.

Coated article

Low molecular weight isocyanate-functional acrylic polymers prepared by direct reaction of the monomers, e.g., 2-isocyanatoethyl methacrylate and butyl acrylate, in the presence of a mercaptan chain-transfer agent are good coating materials applicable to a substrate as by spraying and curable by contact with moisture.

Coatings formed from isocyanate-functional polymers containing a

Low molecular weight polydisperse isocyanate-functional acrylic polymers are prepared by direct reaction of the monomers, e.g., 2-isocyanatoethyl methacrylate and butyl acrylate, in the presence of a mercaptan chain-transfer agent and a polymerization initiator but in the substantial absence of water and of Lewis-type bases.

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Wilmington, DE, United States of America

John A Simms