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Patents with Abstracts


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Patents with Abstracts

4. U.S. Patent 8,586,672 (November 19, 2013), “Method for Increasing Polymer Compatibility,”  Nicolas Dufaure, Francois Genes Tournilhac, Manuel  Hidalgo, and Ludwik Leibler (Arkema France, Colombes, France, and  CNRS, Paris, France).

Mixing incompatible polymers is a problem because of their basic incompatibility.  Dufaure  et al improved compatibility by grafting compatibilizing groups to one or more of the polymers.  The compatibilizing groups include amine, mercaptan, epoxy, isocyanate, anhydride, alcohol or acid groups.  These reactive groups form covalent bonds with a reactive functional group, such as an acid, anhydride, alcohol, mercaptan, amine, epoxy or isocyanate functional groups.  Modification is performed by a modifying agent carrying the appropriate groups for the polymers involved.  Modifying agents are 2-aminoethylimidazolidone (UDETA), 1-(2-[(2-aminoethyl)-amino]ethyl)imidazolidone (UTETA) , 1-(2-[{2-(2-aminoethylamino)ethyl}amino]ethyl)imidazolidone (UTEPA), N-(6-aminohexyl)-N'-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)urea (UPy), 3-amino-1,2,4-triazole (3-ATA) and 4-amino-1,2,4-triazole (4-ATA). UDETA is preferred for use in the present invention.

3. 8,344,058 
Reactive block copolymers as additives for the preparation of silicate-polymer composites 

Flores Santos, Gonzalez and Alvarado of CID Centro de Investigacion y Desarrollo Technologico S.A. de C.V., Mexico, developed a block copolymer compatibilizer by reacting an acrylic and/or vinyl monomer with special functional groups with one or more vinyl monomers in the presence of a free radical initiator and a stable free radical to form a reaction product that includes residual unreacted acrylic and/or vinyl monomer, and reacting one or more vinyl monomers with the reaction product to form a second block that incorporates the residual unreacted acrylic monomer. The block copolymer is used to compatibilize a clay nanocomposite material with a thermoplastic or thermoset resin. The block copolymer can be used with existing, commercially-available clays, or the block copolymer can be formed with a polar block that is miscible in a polar dispersion medium for use as a intercalate in producing a clay nanocomposite material.  (RDC 1/10/2013)

2. 8,258,242 
Compatibilizing agent for polymer alloy, polymer alloy, and master batch for preparation of polymer alloy
Hiroi and Yamamoto Otsuka Chemical Co., Ltd., Japan, developed a compatibilizing agent for (A) polyphenylene sulfide, a polyphenylene ether and a polyamide with a polymer (B) of a different type from the polymer (A) at such a ratio that the amount of the polymer (A) blended is the same as or more than that of the polymer (B). The compatibilizing agent is a nanosheet-shaped layered titanic acid which is produced by intercalate an organic basic compound between the layers of a layered titanic acid. (RDC 9/23/2012)

1. 8,211,958 
Polyolefin nanocomposites with functional ionic liquids and carbon nanofillers
Chu et al of State University of New York, New York, developed a new class of polyolefin blends and nanocomposites containing functional ionic liquids and/or surface-modified carbon nanofillers (e.g. single-walled carbon nanotubes, multi-walled carbon nanotubes, carbon nanofibers, graphene sheets, graphite nanoparticles) with ionic liquids.  The hydrophobic tail (e.g. long alkyl substituted group) of the ionic liquid can be made compatible with a polyolefin (e.g. polyethylene, polypropylene, their random and block copolymers), and the cationic head of the ionic liquid can form strong and stable .pi.-.pi. interactions with the graphene plane of carbon nanofillers, as well as some aromatic dyes and antimicrobial agents. As a result, charged ionic liquids can be used: as a plasticizer (viscosity adjustable agents) to polyolefins; as a compatibilizer to multi-component polyolefin blends; and as functionalizable agents that can form stable complex with color dyes, molecular fingerprint agents (e.g. fluorescent agents) and antimicrobial agents. (RDC 7/10/2012)


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(RDC 6/5/2012)


Roger D. Corneliussen

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Copyright 2012 by Roger D. Corneliussen.
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** Date of latest addition; date of first entry is 7/10/2012.