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:
Dec. 10, 2002
Filed:
Nov. 16, 2000
Richard D. Schile, Ridgefield, CT (US);
Other;
Abstract
Hardeners for epoxy resins are disclosed which have the capability of curing at lower temperatures than currently available hardeners while retaining superior mechanical and thermal properties. These novel hardeners include a range of reactivity which results in a range of pot lives from minutes to months. These materials co-cure readily with polyamines and have little or no amine odor. Mixture viscosity can be controlled over a wide range independent of filler concentration which allows a broad range of applications from coating and casting to adhesives. Class I hardeners contain a mixture of polyols, polyamines and tertiary amines and cure at temperatures between 20-50° C., while class II hardeners have the same polyols mixed with one or more tertiary amines and cure between 65-100° C. Class III hardeners contain the same polyols combined with either imadazole or dicyandiamide, and optionally, a tertiary amine and cure at 120° C.