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:
Nov. 30, 2010
Filed:
Jul. 05, 2007
Chinniah Thiagarajan, Bangalore, IN;
Gautam Chatterjee, Bangalore, IN;
Ravi Sriraman, Pune, IN;
Santhosh Kumar Rajendran, Arakkonam, IN;
Anand Vaidyalingam, Bangalore, IN;
Chinniah Thiagarajan, Bangalore, IN;
Gautam Chatterjee, Bangalore, IN;
Ravi Sriraman, Pune, IN;
Santhosh Kumar Rajendran, Arakkonam, IN;
Anand Vaidyalingam, Bangalore, IN;
Abstract
Polymeric foams having nanocellular morphology are formed from a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compound. The foams include a plurality of cells having an average diameter of less than 1 micron. Processes for forming the foams include melting a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compounds; diffusing a blowing agent into the polymeric material to form a mixture; nucleating bubbles in the mixture is at a sufficient temperature and pressure to enable the production of cells having an average diameter of less than 1 micron; stabilizing the cells; and forming the mixture into a desired shape.