John P Kovalchin

US Patent:

56746288, Oct 7, 1997

Filed:

May 15, 1996

Appl. No.:

8/649744

Inventors:

I. Glen Hargis - Tallmadge OH
John P. Kovalchin - Akron OH
Satish C. Sharma - Stow OH
Raymond J. Weinert - Macedonia OH
John A. Wilson - Arkon OH

Assignee:

GenCorp Inc. - Fairlawn OH

International Classification:

B32B 1506
C09J10900
C09J12716

US Classification:

428462

Abstract:

Disclosed is a water-based adhesive with enhanced effectiveness for bonding metal and rubber substrates for uses such as vibration damping devices. The adhesive is formulated from a latex which includes at least one conjugated diene and a macromonomer containing at least two ethylene oxide repeat units.

US Patent:

55940617, Jan 14, 1997

Filed:

Mar 11, 1994

Appl. No.:

8/212619

Inventors:

Satish C. Sharma - Stow OH
John P. Kovalchin - Akron OH
Raymond J. Weinert - Garfield Heights OH

Assignee:

GenCorp Inc. - Fairlawn OH

International Classification:

C08L 3314

US Classification:

524503

Abstract:

A water based coating composition provides a stain resistant layer which adheres well to a substrate and is resistant to chemical attack by common household cleaning solvents such as isopropyl alcohol. The coating composition has a very low volatile organic compound content, thus providing an environmentally desirable alternative to organic solvent based coatings. The low volatile organic compound content of the composition substantially or completely eliminates the problems and expenses associated with solvent recovery for meeting chemical emission standards, and the potential for human exposure to solvent vapor is substantially eliminated or significantly reduced. The coating composition is aqueous based and incorporates a crosslinkable acrylic polymer latex, an amino resin crosslinking agent and a crosslinking catalyst. The polymer, crosslinking agent and catalyst are dispersed and/or solubilized in an aqueous medium. The coating composition is particularly well suited for application to flexible vinyl chloride polymer substrates to produce upon curing and drying a stain resistant, easily cleanable laminate.

US Patent:

55895328, Dec 31, 1996

Filed:

May 15, 1995

Appl. No.:

8/440586

Inventors:

I. Glen Hargis - Tallmadge OH
John P. Kovalchin - Akron OH
Satish C. Sharma - Stow OH
Raymond J. Weinert - Macedonia OH
John A. Wilson - Akron OH

Assignee:

GenCorp Inc. - Fairlawn OH

International Classification:

C08K 322
C08L 910

US Classification:

524432

Abstract:

Disclosed is a water-based adhesive with enhanced effectiveness for bonding metal and rubber substrates for uses such as vibration damping devices. The adhesive is formulated from a latex which includes at least one conjugated diene and a macromonomer containing at least two ethylene oxide repeat units.

US Patent:

57213097, Feb 24, 1998

Filed:

Sep 19, 1996

Appl. No.:

8/710693

Inventors:

Satish C. Sharma - Stow OH
John P. Kovalchin - Akron OH
Raymond J. Weinert - Garfield Heights OH

Assignee:

GenCorp Inc. - Fairlawn OH

International Classification:

C08L 3314
C08L 8304
C08K 336
B32B 2730

US Classification:

524506

Abstract:

A water based coating composition provides a stain resistant layer which adheres well to a substrate and is resistant to chemical attack by common household cleaning solvents such as isopropyl alcohol. The coating composition has a very low volatile organic compound content, thus providing an environmentally desirable alternative to organic solvent based coatings. The low volatile organic compound content of the composition substantially or completely eliminates the problems and expenses associated with solvent recovery for meeting chemical emission standards, and the potential for human exposure to solvent vapor is substantially eliminated or significantly reduced. The coating composition is aqueous based and incorporates a crosslinkable acrylic polymer latex, an amino resin crosslinking agent and a crosslinking catalyst. The polymer, crosslinking agent and catalyst are dispersed and/or solubilized in an aqueous medium. The coating composition is particularly well suited for application to flexible vinyl chloride polymer substrates to produce upon curing and drying a stain resistant, easily cleanable laminate.