Maro Publications

Polymeric Additives

Patents with Abstracts


Maro Topics


Patents with Abstracts

3. 8,287,767 
Amorphous polymers with pendant chromogenic groups
Percec and  Tilford of DuPont, Delaware, developed amorphous polymers with chromogenic pendant groups. The amorphous polymers can be used to make elastomeric films and coatings that can be incorporated into laminates and used to make articles such as architectural and vehicular glazing, and in applications such as eyewear, displays and signage. Suitable redox-active groups include bipyridilium systems; electroactive conducting polymers such as polyanilines, polypyrroles, polythiophenes and polythiophene copolymers, and polycarbazole; carbazoles; methoxybiphenyl compounds; quinones; diphenylamines; phenylene diamines; pyrazolines; tetracyanoquinodimethane (TCNQ); and tetrathiafulvalene (TTF). (RDC 10/24/2012)

2. 8,242,230 
Macromolecular antioxidants based on sterically hindered phenols and phosphites
Cholli and Kumar of Polnox, Massachusetts, developed sterically hindered phenol and phosphite based polymers as antioxidants in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products.  These polyemrs generally have higher oxidative induction time, higher thermal stability and lower change of Melt flow or viscosity than commercially available antioxidants  Without wishing to be bound by theory it is believed that the enhanced molecular activity comes from the synergistic chemistry between the two main integral components (phenolic and phosphite components) of these macromolecular antioxidants. (RDC 8/30/2012)

1. 8,193,281 
Copolymerizable surfactants (2)
Klagge et al of Cognis IP Management, Germany, used maleic esters as copolymerizable emulsifiers in the emulsion polymerization of olefinically unsaturated monomers. (RDC 6/27/2012)


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(RDC 6/5/2012)


Roger D. Corneliussen

Maro Polymer Links
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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen

** Date of latest addition; date of first entry is 6/27/2012.