Minnesota Mining and Manufacturing Company

3M Innovative Properties Company

Christine A Sobon

Billy L George

W Stuart Bigham

Sankar B Narayan

William T Fay

Mark H Kayser

Bill L George

Nancy A Waletzko

Ken G Gatzke

Arthur H Beesley

Low VOC content brake cleaner compositions useful for removing oil and particulate contamination from braking system components of vehicles such as automobiles are reported. The brake cleaner compositions comprise about 5% to about 30% by weight methyl acetate; about 25% to about 50% of a hydrocarbon according to the formula C H , where n is 5 to 8 and x is 0 or 2; and about 25% to about 55% by weight acetone.

Brake cleaner compositions comprising methyl acetate and acetone and method of using same

A composition, containing carbon black pigment particles of a specific size and an inorganic binder, suitable for use as a color coating on inorganic substrates to provide a greater resistance to fade than conventional coating compositions. The particles have a mean particle size in the range of about 150 nm to about 500 nm and a surface area per weight of particles of about 20 m,/g or less. The composition is useful in producing coated inorganic granules for specific uses, such as roofing granules.

Fade resistant black coating for roofing granules

An aigicidal composite sheet body suitable for use as a building material is described. The composite comprises a bituminous sheet material having a firmly adherent surfacing of granular material, the granular material comprising ceramic-coated base granules adhered to the bituminous sheet material by a composition containing calcium, the granular material and the composition forming an exterior surface on the composite sheet body, the composite sheet body exterior surface having an algicidal topical coating Thereon, wherein the algicidal topical coating comprises an organic oil and a tin-acrylate polymer dispersed therein, the tin-acrylate polymer being derived from a monomer composition comprising flee-radical polymerizable units. The organic oil is selected from the group consisting of slate oil, rock oil, coal oil, and seneca oil, and the tin-acrylate polymer is present at a weight percentage ranging from about 0.5 to about 15 as a percentage of total weight of the organic oil and the tin-acrylate polymer.

Tin-acrylate-containing polymers as algicidal agents in building

Granular materials having a tin-acrylate polymer coating are described which are algae-resistant. A method of inhibiting the growth of algae on roofing granules and other particulate materials attached to substrates by the use of tin-acrylate-containing polymers either as a topical treatment or as a polymeric binder is also presented. The methods presented are an advancement in the art in that in addition to algae-resistance, the polymers also confer other desirable properties to the granules onto which they are coated, such as increased adhesion to asphalt shingles.

A method of inhibiting algae growth on an asphalt shingle surface exposed to varying humidity using a blend of copper-containing algae-resistant granules and non-algae-resistant granules. The copper-containing algae-resistant granules comprise a substrate granule having at least one inner ceramic coating layer comprising cuprous oxide and a seal coating having a thickness covering the inner layer and which is at time t.sub.o devoid of copper.

Growing community of inventors

Roseville, MN, United States of America

Christine A Sobon