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:
Sep. 29, 2009
Filed:
Jan. 21, 2004
Ashok L. Cholli, Chelmsford, MA (US);
Vijayendra Kumar, Lowell, MA (US);
Ashish Dhawan, Lowell, MA (US);
Jayant Kumar, Westford, MA (US);
Virinder Singh Parmar, Lowell, MA (US);
Lynne Ann Samuelson, Marlborough, MA (US);
Ferdinando F. Bruno, Andover, MA (US);
Ashok L. Cholli, Chelmsford, MA (US);
Vijayendra Kumar, Lowell, MA (US);
Ashish Dhawan, Lowell, MA (US);
Jayant Kumar, Westford, MA (US);
Virinder Singh Parmar, Lowell, MA (US);
Lynne Ann Samuelson, Marlborough, MA (US);
Ferdinando F. Bruno, Andover, MA (US);
University of Massachusetts Lowell, Lowell, MA (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A method of preparing a phenolic polymer comprising: a) protecting at least one hydroxyl group of a substituted or unsubstituted phenol represented by Structural Formula (XXIX), wherein: R, R, R, Rand Rare independently —H, —OH, —NH, —SH, a substituted or unsubstituted alkyl or aryl group, a substituted or unsubstituted alkoxycarbonyl or aryloxycarbonyl group, a substituted or unsubstituted alkoxy group or a saturated or unsaturated carboxylic acid group; or R, R, R, Ror R, in conjunction with an adjacent R, R, R, Ror R, forms a substituted or unsubstituted alkylene dioxy group; provided that at least one of R, R, R, Ror Ris a tert-butyl group-ethenyl--carboxylic acid or ester thereof, a substituted or unsubstituted alkylene dioxy group or a substituted or unsubstituted n-alkoxycarbonyl group, at least one of R, R, R, Ror Ris a hydroxyl group, and at least one of R, R, R, Rand Ris —H; with a protecting group, wherein thereby obtaining one or more protected hydroxyl groups; and b) polymerizing the substituted or unsubstituted phenol, thereby obtaining the phenolic polymer.