Michael R Barker

US Patent:

8410213, Apr 2, 2013

Filed:

Jan 15, 2010

Appl. No.:

12/687988

Inventors:

Michael James Barker - Powell OH, US
Lubica Alabakovska - Hilliard OH, US
Junxian Wu - Dublin OH, US

International Classification:

C08L 75/00
C09J 201/00

US Classification:

524590, 1563317

Abstract:

A two-part polyurethane adhesive comprising a prepolymer having the reaction product of a non-ionic surfactant and an allophanate modified isocyanate and a curative having a urethane modified high molecular weight polyol, a urethane modified cross-linking compound and a non-urethane modified low molecular weight chain extending compound. The curative has less than 5 equivalent percent total amino and hydroxyl groups having an equivalent weight greater than about 200. The two-part polyurethane adhesive may be used to adhere one or more substrates and can generally be applied without primer or any significant surface preparation.

US Patent:

20120295104, Nov 22, 2012

Filed:

May 15, 2012

Appl. No.:

13/471511

Inventors:

Michael James Barker - Powell OH, US

International Classification:

B32B 15/095
C08K 3/34
C08K 3/22
B32B 37/12
C09J 7/02
B32B 27/40
B32B 15/098
C09J 175/04
C08K 3/30

US Classification:

428344, 524874, 524789, 524783, 524787, 524786, 428355 AK, 1563314

Abstract:

Two-part polyurea-urethane adhesive compositions comprising a Part A prepolymer component having an isocyanate component comprising polymeric isocyanate and an oligomer content greater than 15 weight percent, polyol having a molecular weight of about 5,000 to about 12,000 and about 20 weight percent to about 44 percent weight percent filler; and a Part B curative component comprising polyol having molecular weight of about 5,000 to about 12,000, aromatic amine, about 20 weight percent to about 44 percent weight percent filler and catalyst wherein the adhesive has an 85 C. storage modulus greater than about 20 MPa. The two-part polyurea-urethane adhesive composition can be applied to bond various substrates including composite materials and metal, including making parts for the transportation and assembly markets.