3m Innovative Properties Company

Jeffry L Jacobs

Mary Lou Morris

Dong-Wei Zhu

Mark T Anderson

Wayne W Fan

Qin Zhu

Rachael A T Gould

Kathleen R Reynolds

Uyen N Tang

Hae-Seung Harry Lee

Mahfuza B Ali

Ernest L Thurber

Gregg D Dahlke

Christopher A Haak

Terry R Hobbs

Susannah C Clear

Jeffrey A Peterson

Thomas E Boettcher

John P Banovetz

Duane M Pinault

Kathleen K Reynolds

An adhesion promoter coating composition includes an oligomeric alkylalkoxysiloxane and a compound comprising an electrophile moiety and an alkoxysilyl moiety. The electrophile moiety may contain a sulfide functional group, for example. A dust suppression coating composition includes an acrylic polymer comprising a quaternary ammonium moiety; and an oligomeric alkylalkoxysiloxane. The coating composition may be applied to roofing granules, and/or asphaltic compositions, among other things.

Adhesion promoting and/or dust suppression coating

A roofing shingle may include a substrate, granules and multilayer infrared light reflecting film particles. In some cases, a roofing shingle may include a substrate, granules and a multilayer infrared light reflecting film disposed either above or below the granules. Such roofing shingles may exhibit improved solar reflectivity. An infrared light reflecting mixture may include inorganic granules and polymeric multilayer infrared light reflecting film particles. An existing construction surface may be treated to improve its solar reflectivity.

Energy efficient construction materials

A surface having dust particles thereon and a coating on the surface comprising a coating polymer having a Tg less than &#x2212;20&#xb0; C. A method of reducing dust, the method including providing a surface having dust particles thereon and coating the surface with a coating polymer with a Tg less than &#x2212;20&#xb0; C.

Dust suppressants

A building element selected from a roofing tile or siding element may be formed from a first cementitious mixture and a second cementitious mixture containing a photocatalytic cementitious mixture. The first cementitious mixture and the photocatalytic cementitious mixture may be co-formed into a shaped uncured two layer monolith having a base layer of the first cementitious mixture and a top layer of the photocatalytic cementitious mixture. The shaped uncured two layer monolith is then cured. The resulting building element may be algae-resistant.

Monolithic building element with photocatalytic material

The present application is directed to an article comprising a dusty surface and a coating on the dusty surface comprising a coating polymer having a Tg less &#x2212;20&#xb0; C. and a method of reducing dust. In some embodiments, the polymer has a Tg less than &#x2212;30&#xb0; C., and in specific embodiments, the polymer has a Tg less than &#x2212;45&#xb0; C. The dusty surface may be, for example, crushed stone, coal, iron ore, gravel, sand or other aggregates (e.g. a roofing granule,) or a soil surface. Generally, the coating polymer comprises a polyacrylate, polyurethane, synthetic and natural rubber, silicone and other organic polymers. In specific embodiments, the coating polymer comprises an acrylic emulsion polymer.

A building element may be formed from a first cementitious mixture and a second cementitious mixture containing a photocatalytic cementitious mixture. The first cementitious mixture and the photocatalytic cementitious mixture may be co-formed into a shaped uncured two layer monolith having a base layer of the first cementitious mixture and a top layer of the photocatalytic cementitious mixture. The shaped uncured two layer monolith is then cured. The resulting building element may be algae-resistant.

A delivery system for delivering an anti-microbial agent to a surface in a time release manner. The delivery system includes one or more polymeric particles (e.g., microspheres, core/shell particles, latexes, porogens, cryogenically ground beads, condensation polymer particles, flakes, etc.) and at least anti-microbial agent attached thereto. The anti-microbial agents may or may not be soluble in the polymeric particle or in the monomeric precursor used to make the polymeric particle. The anti-microbial agent can be incorporated into the microsphere using either a post polymerization addition process or an in situ addition process. The delivery system can be fashioned to provide characteristics that are application specific. Examples of such delivery systems include but are not limited to substrates (such as tapes, sheets of material and the like) coated with the releasably loaded polymeric particles, sprayable dispersions or suspensions of these polymeric particles and the like.

Anti-microbial agent delivery system

The present invention provides a coating composition for substrates. The coating composition of the present invention generally includes a silicate binder and a plurality of photocatalytic particles. The silicate binder functions as a bonding agent to establish the coating on the substrate. A plurality of photocatalyst particles are dispersed throughout the silicate binder. The particles are included in an amount that provides sufficient distribution of the particles in the resulting coating. The incorporation of the present invention onto substrates prevents algal growth on building materials utilizing the coated substrates.

Growing community of inventors

Stillwater, MN, United States of America

Jeffry L Jacobs