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:
Aug. 17, 2010
Filed:
May. 03, 2005
Xiaobin Wang, North Andover, MA (US);
Daniel K. Doe, Hyde Park, MA (US);
Patricia M. Savory, Danvers, MA (US);
Kenneth A. Lambert, Billerica, MA (US);
Xiaobin Wang, North Andover, MA (US);
Daniel K. Doe, Hyde Park, MA (US);
Patricia M. Savory, Danvers, MA (US);
Kenneth A. Lambert, Billerica, MA (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
Adhesive formulations having acrylate monomer or methacrylate monomer, or mixtures thereof, and having a reducing agent and an initiator (e.g., peroxide). The formulations may include a chelating agent solution to improve storage stability and other properties. Further, the mole ratio of the initiator to the reducing agent may be adjusted to control weight loss of the adhesives during cure. Polyvinyl acetate or its derivatives may also be employed in the adhesive formulations to reduce weight loss during cure. Moreover, certain embodiments of the formulations include a toughening-agent copolymer having a glass transition temperature (of at least one domain) that is lower than −50° C. (−58° F.). These toughening-agent copolymers may be added to the adhesive formulations to improve impact strength and other properties of the cured adhesives at lower temperatures, e.g., −40° C. (−40° F.), while maintaining performance of the cured adhesives at higher temperatures, e.g., 82° C. (180° F.).