Minnesota Mining and Manufacturing Company

J Lamar Zollinger

Larry A Lien

Janis Robins

Brian H Williams

Ashwani K Mehta

James L Beardsley

Kathryn A Soine

Imaged transparent film which is carried by machinery is provided with a low friction, abrasion resistant coating which prevents the film from causing unnecessary drag when used with the machinery.

Low friction, abrasion resistant coating for transparent film

The ability to withstand weathering by acrylic substrates having an abrasion resistant coating comprising a cured epoxy-terminated silane on the surface thereof is improved by using a particular primer composition between the coating and the substrate. The primer comprises a mixture of an acrylic polymer and cellulose esters of carboxylic acids.

Laminates comprising weatherable coatings and primer compositions

Abrasion resistant coatings based on epoxy-terminated silanes can reduce the transmission of ultraviolet radiation by at least 90% with the addition of ultraviolet radiation absorbers and 10-70% by weight of an aliphatic, polyepoxide, comonomer.

Ultraviolet radiation protective, abrasion resistant, bloom resistant

Abrasion resistant coatings derived from epoxy-terminated silanes are desirable when formed by curing in the presence of PF.sub.5, SbF.sub.5, or HSbF.sub.6.

Abrasion resistant coatings cured in the presence of PF.sub.5,

Polycarbodiimide polymers terminated with polymerizable silane groups function well as primers for a variety of substrates and for many different coating materials. SP

Silane-terminated polycarbodiimide primers and composite coatings

Epoxy prepolymers having particular ranges of physical properties and derived from epoxy-terminated silanes and/or copolymers form high quality abrasion resistant coatings when subsequently hydrolyzed.

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Maplewood, MN, United States of America

J Lamar Zollinger