The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2007
Filed:
Apr. 23, 2003
James E. Brown, Puyallup, WA (US);
Norimitsu Natsume, Kent, WA (US);
Nobuyuki Odagiri, Renton, WA (US);
Jeffrey J. Hawkey, Tacoma, WA (US);
Brian S. Hayes, Ludington, MI (US);
James E. Brown, Puyallup, WA (US);
Norimitsu Natsume, Kent, WA (US);
Nobuyuki Odagiri, Renton, WA (US);
Jeffrey J. Hawkey, Tacoma, WA (US);
Brian S. Hayes, Ludington, MI (US);
Toray Composites (America), Inc., Tacoma, WA (US);
Abstract
An epoxy resin composition for a cured material, comprising (A) an epoxy resin comprising an epoxy compound X, the epoxy compound X has an epoxy equivalent weight of at least 400, (B) a curing agent, and (C) a liquid rubber that is liquid at room temperature and comprises a reactive group; wherein the epoxy compound X has a solubility parameter value of SpX, the liquid rubber has a solubility parameter value of SpY and the ratio of SpY/SpX could be in the range of 0.7 to 1.3; and wherein the liquid rubber could form no visible domains by optical microscopy or has a maximum domain size of at most 3 microns in the cured material is described. The epoxy resin composition provides a fiber-reinforced material with higher compressive modulus and strength, toughness and better handling ability over standard epoxy resin systems. This invention is excellent for small thin walled tube structures like fishing rods or applications that require good compressive strength.