terial and methodsUS6890964Apr 10, 2002May 10, 2005L&L Products, Inc.Combining a premixed epoxy resin containing an encapsulated solvent foaming agent core with H3PO4, applying to a member such as an automobile frame or body, and softening the capsule to release the foaming agentUS7125461May 7, 2003Oct 24, 2006L & L Products, Inc.Activatable material for sealing, baffling or reinforcing and method