Abstract: The instant invention discloses a composition, preferably a nanocomposite material, comprising (a) a synthetic polymer, (b) a filler selected from a natural or synthetic phyllosilicate or a mixture of such phyllosilicates, preferably in nanoparticles, and (c) a dispersing agent prepared by controlled free radical polymerization (CFRP).
Type:
Grant
Filed:
February 23, 2004
Date of Patent:
November 23, 2010
Assignee:
Polymers Australia Pty. Ltd.
Inventors:
Graeme Moad, George Philip Simon, Katherine Maree Dean, Guoxin Li, Roshan Tyrrel Anton Mayadunne, Hendrik Wermter, Rudolf Pfaendner
Abstract: The invention related to a photochromic polymeric composition comprising a polymer matrix and a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendant oligomer group to provide a rate of fade of the photochromic polymeric composition which is significantly changed when compared with the corresponding composition comprising the photochromic compound without said pendent oligomer. The invention also relates to a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendent oligomer.
Type:
Grant
Filed:
May 3, 2005
Date of Patent:
July 24, 2007
Assignee:
Polymers Australia Pty Ltd.
Inventors:
Richard Alexander Evans, Melissa Ann Skidmore, Lachlan Hartley Yee, Tracey Lee Hanley, David Andrew Lewis