Minnesota Mining and Manufacturing Company

3M Innovative Properties Company

Charles W Stobbie, Iv

Lani S Kangas

John C Tangen

Walter C Pearson

Stephen A Miller

Gerald W Quinn

Lauren N Waxer

A firestop article for fire stopping an opening in a floor or wall includes a firestop material, an enclosure surrounding the firestop material, and an attachment surface provided on the outer surface of the enclosure that allows the article to be repeatably connected to and removed from a mating surface.

Firestop article with attachment surface

A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.

Mixture of isocyanate-terminated polyurethane prepolymers

Article including an adhesively bonded moisture cured material and a

A moisture curable hot melt composition comprises: (a) a first isocyanate-terminated polyurethane prepolymer that is the reaction product of a crystalline polyester polyol and a polyisocyanate; (b) a crystalline, reactive wax; and (c) optionally, a second isocyanate-terminated polyurethane prepolymer that is the reaction product of a polyisocyanate and a hydroxy-functional polymer that is different than the crystalline polyester polyol.

Reactive wax-containing moisture curable hot melt composition

A method for adhesively bonding an at least partially hollow first member to a second member received interiorly of the first member. Adhesive is applied to the second member and allowed to attain a substantially nonflowable condition. The first and second members are positioned such that the first member at least partially overlies the nonflowable adhesive on the second member. The adhesive is reactivated and then cooled to adhesively bond the first and second members together. An adhesive dispenser for applying the adhesive to the second member is also disclosed.

Method for adhesively bonding close fitting components

A mixture of hydroxy functional polymers which can be used to form isocyanate prepolymers which are non-hairing at application temperature are disclosed. Examples of suitable mixtures of hydroxy functional polymers that can be used to form the prepolymers are: (1) linear polyester blends, comprising a first and second polyester wherein each polyester is the reaction product of a polyol and a polyacid, wherein

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Maplewood, MN, United States of America

Charles W Stobbie, Iv