Wayne E Larson

US Patent:

56373686, Jun 10, 1997

Filed:

Apr 20, 1993

Appl. No.:

8/049710

Inventors:

David A. Cadalbert - Woodbury MN
Eric D. Morrison - West St. Paul MN
Tamara L. Johnson - Oakdale MN
William L. Kausch - Cottage Grove MN
David R. Boston - Woodbury MN
Wayne K. Larson - Maplewood MN
Steven T. Hedrick - Cottage Grove MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B32B 3300
C09D 524

US Classification:

428 401

Abstract:

An antistatic adhesive article which comprises an adhesive layer and utilizes vanadium oxide to impart antistatic properties to the article. The article is preferably an adhesive tape or sheet. The adhesive may be pressure sensitive or non-pressure sensitive. The vanadium oxide may be incorporated into or onto the tape from an aqueous dispersion.

US Patent:

47467177, May 24, 1988

Filed:

Jan 22, 1987

Appl. No.:

7/009616

Inventors:

Wayne K. Larson - Maplewood MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

C08G 1832

US Classification:

528 68

Abstract:

An isocyanate-terminated sulfocompound is the reaction product of a polyisocyanate and a sulfopolyol or sulfopolyamine which is the reaction product of one mole of a sulfodicarboxylic acid and about two moles of an aliphatic polyol or polyamine having two or more hydroxyl or amino groups attached to a linear chain and having a molecular weight of up to 2000. The sulfocompound can be reacted with ethylenically-unsaturated alcohols, water, polyamines, or polyols, to give ethylenically-unsaturated sulfocompounds, sulfopolyureas or sulfopolyurethanes.

US Patent:

40523683, Oct 4, 1977

Filed:

Jun 21, 1976

Appl. No.:

5/697968

Inventors:

Wayne K. Larson - Maplewood MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

C08G 6368

US Classification:

260 75S

Abstract:

Water-dispellable, optionally pressure-sensitive hot melt resins having superior heat-aging properties are made by reacting (1) diols, of which at least 90% are polycaprolactonediol and/or monoalkylene diols, with (2) dicarboxylic acids, of which up to 95% are aliphatic, 5-25% are aromatic and have a magnesium or alkali metal sulfonate group attached to the ring, and the balance are non-sulfonated aromatic. These resins, which find use as hot melt adhesives for book binding and other purposes, can be readily dissolved or dispersed in a paper beater during a repulping operation. The product can be wound upon itself and supplied in roll form, optionally reinforced by a fibrous membrane.

US Patent:

46380175, Jan 20, 1987

Filed:

Dec 9, 1985

Appl. No.:

6/806758

Inventors:

Wayne K. Larson - Maplewood MN
Steven T. Hedrick - Maplewood MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

C08G 1814

US Classification:

521157

Abstract:

A water-absorbing sponge comprises at least one of a sulfo- group containing polyurea and polyurethane, the polymer containing at least one sulfonate equivalent per 20,000 molecular weight units.

US Patent:

48553840, Aug 8, 1989

Filed:

Feb 12, 1988

Appl. No.:

7/156303

Inventors:

Wayne K. Larson - Maplewood MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

C08G 1832

US Classification:

528 60

Abstract:

An isocyanate-terminated sulfocompound is the reaction product of a polyisocyanate and a sulfopolyol or sulfopolyamine which is the reaction product of one mole of a sulfodicarboxylic acid and about two moles of an aliphatic polyol or polyamine having two or more hydroxyl or amino groups attached to a linear chain and having a molecular weight of up to 2000. The sulfocompound can be reacted with ethylenically-unsaturated alcohols, water, polyamines, or polyols, to give ethylenically-unsaturated sulfocompounds, sulfopolyureas or sulfopolyurethanes.

US Patent:

59291605, Jul 27, 1999

Filed:

Sep 25, 1997

Appl. No.:

8/937487

Inventors:

Larry R. Krepski - White Bear Lake MN
Steven M. Heilmann - Afton MN
Daniel E. Mickus - Mahtomedi MN
Wayne K. Larson - Maplewood MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

C08J 300
C08K 320
C08L 7500
C08L 8300

US Classification:

524590

Abstract:

A method of decreasing the water uptake in a sulfopoly(ester-urethane) by preparing said sulfopoly(ester-urethane) from a chain extended sulfopolyester polyol which itself has been prepared in a two-step method, said sulfopoly(ester-urethane) comprising in its backbone at least one non-terminal arylene or alkylene group comprising a pendant sulfonic acid group or salt thereof, said sulfonic acid group or salt thereof having the formula ##STR1## wherein R is a trivalent aliphatic or aromatic group and M is a cation, said sulfonic acid group or salt thereof being bonded directly through said aliphatic or aromatic group to ester groups, the polymer of said sulfo(polyester-urethane) being terminated by at least one hydrolyzable silyl group, said two-step method for preparing said chain extended sulfopolyester polyol comprising the steps of: a) reacting a sulfopolycarboxylic acid or ester with a polyol to produce a sulfopolyester polyol, b) chain extending said sulfopolyester polyol by an esterification reaction with a lower aliphatic lactone to produce a chain extended sulfopolyester polyol, and said chain extended sulfopolyester polyol then, (1) in one embodiment, being reacted with a stoichiometric excess of a polyisocyanate and at least one of a polyol, polyamine, and polythiol to produce an isocyanate-terminated sulfo(polyester-urethane), which is then reacted with a nucleophilic, hydrolyzable silane or (2) in a second embodiment, being reacted with a polyisocyanate and a stoichiometric excess of at least one of a polyol, polyamine, and polythiol to produce a hydroxyl-, amino-, or mercapto-terminated sulfo(polyester-urethane) which is then reacted with an electrophilic hydrolyzable silane to produce said sulfopoly(ester-urethane), which when dried has decreased water uptake.

US Patent:

43072194, Dec 22, 1981

Filed:

Apr 30, 1980

Appl. No.:

6/145026

Inventors:

Wayne K. Larson - Maplewood MN

Assignee:

Minnesota Mining and Manufacturing Company - Saint Paul MN

International Classification:

C08G 1832
C08G 1838
C08G 1846

US Classification:

528 71

Abstract:

An organic polyurethane resin capable of water and aqueous organic solvent redispersibility comprising the reaction product of at least one hydrophilic diol, at least one hydrophobic diol, at least one organic diisocyanate and, optionally, at least one chain extender.

US Patent:

47749377, Oct 4, 1988

Filed:

Nov 6, 1986

Appl. No.:

6/928260

Inventors:

Matthew T. Scholz - Woodbury MN
Dennis C. Bartizal - Woodbury MN
Katherine E. Reed - Stillwater MN
Wayne E. Larson - Maplewood MN
Dean A. Ersfeld - Maplewood MN
Timothy C. Sandvig - Woodville WI
Richard S. Buckanin - Woodbury MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

A61L 1507
A61F 504
A61F 1304
B32B 1704

US Classification:

128 90

Abstract:

A curable resin coated sheet useful as an orthopedic bandage which has reduced tack is provided. The resin coated sheet is pre-lubricated with a lubricant which is (a) bonded to the resin, (b) added to the resin or applied to the surface of the coated sheet, or (c) a combination of (a) and (b). The lubricant is present in an amount to reduce the kinetic coefficient of friction of a surface of the coated sheet to less than 1. 2.