Basf Corporation

Other

Basf Se Corporation

Toyota Motor Engineering & Manufacturing North America, Inc.

Joann Lanza

Timothy S December

Scott Dale Kubish

Marc Bennett Fenwick

Yoshiko Kobayashi-San

Ippei Shinohara

Walter H Ohrbom

Robert D Weise

Karl R Gust

R Merritt Sink

Dominick A Burlone

Oxidation of an alkane to an alkanone in a process stream forms aldehyde-based impurities. A method of minimizing the aldehyde-based impurities introduces an amine into the process stream to minimize the aldehyde-based impurities. The amine interacts with the alkanone and the aldehyde-based impurities thereby forming heavy products. The method separates the heavy products from the alkanones to reduce a level of the aldehyde-based impurities. The process stream preferably includes cyclohexyl ketone as the alkanone and n-hexanal as the aldehyde-based impurity. The method is typically involved in synthesis of a caprolactam.

Method of minimizing aldehyde-based impurities in a process stream

Disclosed is a film-forming composition comprising a binder and a pigment mixture present in a pigment to binder ratio of at least 0.8. The pigment mixture consists of at least 80% of titanium dioxide by weight and no more than 20% by weight of non-titanium dioxide pigments, based on the total weight of the pigment mixture, said non-titanium dioxide pigments being selected from the group consisting of carbon black, talc, barium sulfate, magnesium silicate, and combinations comprising two or more of the foregoing. The composition has an adjusted VOC of no more than 100 g/L, is free of all pigments other than those in the pigment mixture, has a viscosity of no more than 200 cps at 384 sec, and provides a cured film having an elasticity of at least 20%. The composition provides multilayer coating systems having improved chip performance.

Coatings and coating systems having optimized chip performance and methods of obtaining the same

Disclosed is a method for evaluating chip performance of a cured coating system. In one embodiment, the method includes providing a coated substrate comprising a substrate and a cured film of a first coating composition thereon, measuring elastic work energy (W/W) of the cured film, and calculating a % C.P. of the cured film via the formula: % C.P.=7.61636&#x2212;0.225473 (W/W) wherein a % C.P. of equal to or less than about 3.5% correlates to a total paint loss of equal to or less than 5% of a coating system comprising the first coating composition. The disclosed method predicts the gravelometer chip performance of a cured multilayer coating system comprising a first coating composition and a topcoat by measuring the measuring elastic work energy (W/W) of the cured first coating system alone. In one embodiment, chip performance can be predicted without topcoat application and independent of topcoat composition.

Method for predicting and optimizing chip performance in cured thermoset coatings

An aqueous thermosetting primer composition includes a polyurethane polymer, an acrylic polymer polymerized in a wax having crosslinkable functionality, and a crosslinking component that is reactive with the wax and at least one of the polyurethane polymer and the acrylic polymer. The polyurethane polymer has a glass transition temperature of 0&#xb0; C. or less. The acrylic polymer has a glass transition temperature that is at least about 20&#xb0; C. higher than the glass transition temperature of polyurethane resin. The invention further provides a composite coating having as a primer layer a cured layer of the primer composition of the invention and having at least one topcoat layer.

Low VOC waterborne primer with high film smoothness

Growing community of inventors

Farmington Hills, MI, United States of America

Joann Lanza