Peter John Stark

US Patent:

6369123, Apr 9, 2002

Filed:

Aug 14, 1995

Appl. No.:

08/514677

Inventors:

Peter A. Stark - Cottage Grove MN
Edward G. Stewart - White Bear Lake MN
Albert I. Everaerts - Oakdale MN

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

C08J 328

US Classification:

522 36, 522 38, 522 39, 522 46, 522 63, 522 64, 522 74, 522 81, 522 82, 522 83, 522 33, 522126, 522127, 522130, 522134, 522146, 522148

Abstract:

Radiation-crosslinkable elastomeric compositions containing: (a) an elastomeric polymer containing abstractable hydrogen atoms in an amount sufficient to enable the elastomeric polymer to undergo crosslinking in the presence of a suitable radiation-activatable crosslinking agent; and (b) a radiation-activatable crosslinking agent of the formula: wherein: X represents CH â; phenyl; or substituted-phenyl; or substituted-phenyl with the proviso that any substituents on the substituted-phenyl do not interfere with the light-absorbing capacity of the radiation-activatable crosslinking agent and do not promote intramolecular hydrogen abstraction of the radiation activatable crosslinking agent; W represents âOâ, âNHâ, or âSâ; Z represents an organic spacer selected from the group consisting of aliphatic, aromatic, aralkyl, heteroaromatic, and cycloaliphatic groups free of esters, amides, ketones, urethanes, and also free of ethers, thiols, allylic groups; and benzylic groups with hydrogen atoms intramolecularly accessible to the carbonyl group(s) present in the radiation-activatable crosslinking agent; and n represents an integer of 2 or greater. Further disclosed are novel photocrosslinkers based upon 2,4,6-tri(4-benzoylphenoxy)-1,3,5-triazines.

US Patent:

6475316, Nov 5, 2002

Filed:

Jul 7, 2000

Appl. No.:

09/612015

Inventors:

Seth M. Kirk - Minneapolis MN
Stephen F. Wolf - St. Paul MN
Joseph M. McGrath - Lake Elmo MN
Albert I. Everaerts - Oakdale MN
Peter A. Stark - Cottage Grove MN
Terrence W. Miller - Cottage Grove MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 3112

US Classification:

156 82, 156283, 1563096, 1563099, 156326

Abstract:

Methods for enhancing adhesion between at least two surfaces, preferably of at least two different materials, using a powdered surface preparation composition.

US Patent:

6624273, Sep 23, 2003

Filed:

Aug 13, 1999

Appl. No.:

09/367454

Inventors:

Albert I. Everaerts - Oakdale MN
Eric B. T. Moonen - Koolhof, BE
Peter A. Stark - Cottage Grove MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

C08F 246

US Classification:

5263171, 5263031, 526308, 526310, 526318, 526319, 526346, 5263482, 5263484, 526913, 522149, 522150, 522153, 522178, 522182, 522181, 522184, 522185, 522186, 522188, 427508, 427516

Abstract:

Non-tacky, base polymers are plasticized into pressure-sensitive adhesives and comprise: a) about 100 parts by weight of a base copolymer having a Tg greater than about 0Â C. , wherein the base copolymer is formed from and comprises: (1) about 50 to 70% by weight of a high Tg comonomer component, wherein the homopolymer formed from the high Tg comonomer component has a Tg of at least about 20Â C. ; (2) optionally, up to about 20% by weight based on the total weight of the base copolymer of an acidic comonomer; and (3) about 30 to 50% by weight of one or more low Tg (meth)acrylate comonomer, wherein the Tg homopolymer of the low Tg comonomer is less than about 20Â C. , and b) about 1 to about 100 parts based on the base copolymer of a nonreactive, non-volatile, non-acrylic-based plasticizing agent.

US Patent:

6652970, Nov 25, 2003

Filed:

Jul 7, 2000

Appl. No.:

09/612016

Inventors:

Albert I. Everaerts - Oakdale MN
Charles M. Leir - Falcon Heights MN
Roger A. Mader - Stillwater MN
Peter A. Stark - Cottage Grove MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 904

US Classification:

4284111, 428501, 428502, 428521, 428522, 428524, 156 82, 156283, 1563096, 1563099, 156325, 156326, 1563313, 522 33, 522 36, 522 39

Abstract:

The present invention is directed toward compositions that are chemically different after application to a substrate as compared to the composition prior to its application. A method of the invention comprises a method of transitioning a crosslinked polymer composition from a first chemical state to a second chemical state. Advantageously, compositions of the invention are relatively stable after transformation to their altered, or second, chemical state.

US Patent:

6720387, Apr 13, 2004

Filed:

Feb 18, 1998

Appl. No.:

09/025607

Inventors:

Peter A. Stark - Cottage Grove MN
Audrey A. Sherman - St. Paul MN
Albert I. Everaerts - Oakdale MN

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

C08L 3502

US Classification:

525203, 525205, 525209, 525212, 525218, 525221, 428346, 428349, 428352, 428354, 428355 AC

Abstract:

A hot-melt adhesive composition comprises a blend of at least one acidic polymer and at least one basic polymer. At least one of the polymers is a hot-melt adhesive. Thermally reversible crosslinks are formed between each of the two polymers. These crosslinks impart cohesive strength to the applied adhesive, without sacrificing ease of processing.

US Patent:

6800680, Oct 5, 2004

Filed:

Mar 15, 2001

Appl. No.:

09/809712

Inventors:

Peter A. Stark - Cottage Grove MN
Audrey A. Sherman - St. Paul MN
Albert I. Everaerts - Oakdale MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

C08L 3302

US Classification:

524203, 525205, 525209, 525212, 525218, 525221, 428346, 428349, 428352, 428354, 428355 AC

Abstract:

A hot-melt adhesive composition comprises a blend of at least one acidic polymer and at least one basic polymer. At least one of the polymers is a hot-melt adhesive. Thermally reversible crosslinks are formed between each of the two polymers. These crosslinks impart cohesive strength to the applied adhesive, without sacrificing ease of processing.

US Patent:

6864322, Mar 8, 2005

Filed:

Jun 20, 2003

Appl. No.:

10/600983

Inventors:

Mark D. Gehlsen - Eagan MN, US
Peter A. Stark - Cottage Grove MN, US
Bradley S. Momchilovich - New Richmond WI, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

C08L033/08

US Classification:

525227, 428 414, 428355 AC, 428355 CN, 428343

Abstract:

The present invention relates to a double-sided pressure sensitive adhesive foam tape. In certain embodiments the foam tape does not require the use of a release liner. Elimination of the release liner reduces the cost of the tape and also avoids problems associated with damage to the liner during traditional tape manufacturing from exposure to e-beam radiation.

US Patent:

7704521, Apr 27, 2010

Filed:

Apr 11, 2007

Appl. No.:

11/734028

Inventors:

Peter A. Stark - Cottage Grove MN, US
Mahmoud Abdel-Monem - Oak Harbor WA, US

Assignee:

Zinpro Corporation - Eden Prairie MN

International Classification:

A23K 1/17

US Classification:

424442

Abstract:

Use of essential amino acid imines and compositions containing them as a source of rumen protected essential amino acids for ruminant animals. Preferred are histidine and methionine.