Minnesota Mining and Manufacturing Company

Allen L Griggs

Taun L McKenzie

Michael D Crandall

Alan R Kirk

Peter M Olofson

Kent S Tarbutton

Virginia C Marhevka

James S McHattie

Richard M Bymark

Theresa M Watschke

A composition useful as a powder coating comprises an epoxy resin and a novolak compound or resin having a structure obtained from the reaction of a substituted phenol such as cresol and an aldehyde to form a substituted bis(hydroxymethyl) phenol intermediate which is then reacted with a polyhydroxyphenol containing adjacent hydroxyl groups such as catechol to yield a polyhydroxyphenol-endcapped novolak compound or resin.

Novolak compounds useful as adhesion promoters for epoxy resins

The present invention provides a novel method for preparing a novel latent curing agent composition suitable for curing epoxy resin compositions. The present invention also provides the novel latent curing agent compositions.

Latent curing agent compositions and a method of making

The present invention provides a novel method for preparing a novel curing agent composition suitable for curing epoxy resin compositions. The present invention also provides the novel curing agent compositions.

Curing agent compositions and a method of making

Epoxy resin curing agent made via aqueous dispersion of an epoxide and

The invention provides a curable, structural epoxy adhesive composition comprising: (a) an epoxy resin; (b) a curing agent for the epoxy resin; and (c) a compound of the formula I: ##STR1## in which R.sup.1 and R.sup.2, which may be the same or different, are selected from an alkyl group, a hydroxyalkyl group, a cycloalkyl group, an aryl group, an arylalkyl group, or a heterocyclic group in which the one to three non-carbon atoms in the ring are independently selected from S, N, and O.

Epoxy adhesives with dithiooxamide adhesion promoters

A retroreflective article (100, 200, 300) includes a monolayer of retroreflective elements (120, 220, 320), a binder layer (110, 210, 310), and a compound comprising an aromatic bidentate moiety. The retroreflective elements (120, 220, 320) are partially embedded in the binder layer (110, 210, 310), and the compound is chemically associated with the retroreflective elements (120, 220, 320) to provide extraordinary laundering durability to the retroreflective article (100, 200, 300).

Retroreflective article and method of making the same

An advanced thermosetting epoxy powder composition comprising from about 95 epoxide equivalent percent to about 99 epoxide equivalent percent of a diglycidyl ether of an aromatic bisphenol, from about 1 to about 5 epoxide equivalent percent of at least one trifunctional polyglycidyl ether of an aliphatic polyol, a curing agent selected from the group consisting of dihydric bisphenol such as bisphenol-A and mixtures of bisphenol-A and bisphenol A endcapped diglycidyl ether of bisphenol A, and a curing accelerator selected from the group consisting of imidazoles and imidazole adducts with polyglycidyl ether of aliphatic polyol.

Rapid curing powder epoxy coating compositions having increased

Protective coating powder comprising a polyglycidyl ether of bisphenol A and trimellitic anhydride has improved shelf stability when it contains a hindered nitrogen-containing compound such as N,N-diethylaniline.

Growing community of inventors

Saint Paul, MN, United States of America

Allen L Griggs