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Polyethers

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*8/30/2012

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Patents with Abstracts

5. 8,242,218 
Copolymer synthesis process
 
Lorenz et al of Construction Research & Technology GmbH, Denmark, developed a non-ionic copolymer having a hydrolysable monomer residue and a polyether macromonomer residue in a semicontinuous mode in a polymerization reactor associated with a metering device, including introducing polyether macromonomer and water into the reactor, wherein hydrolysable monomer which is added thereto forms a polymerization reaction mixture; introducing hydrolysable monomer into the metering device; adding hydrolysable monomer into the reactor from the metering device; passing a free radical polymerization initiator into the reactor before and/or during the addition of the hydrolysable monomer, the hydrolysable monomer and the polyether macromonomer reacting by free radical polymerization to form the non-ionic copolymer; and, subjecting the reaction mixture to polymerization while an addition rate of the hydrolysable monomer and/or at least a component of the polymerization initiator is varied stepwise or continuously. No monomer is introduced to incorporate ionic cement binding sites into the non-ionic copolymer. (RDC 8/30/2012)

4. 8,216,487 
Copolymer of propylene or ethylene oxide and of an oxirane bearing an ionic group
 
Sanchez et al of Batscap, France, developed  a copolymer of ethylene oxide or propylene oxide and at least one substituted oxirane bearing an ionic group. The copolymer is characterized in that its chain comprises repeat units --O--CH2--CH(--CH2--O--SO3-Li+)--, repeat units --O--CH2--CHR-- in which R is H or CH.sub3, optionally, repeat units --O--CH2--CH(--CH2R')-- in which R' is a functional group. x Uses: electrolyte in electrochemical, selective-membrane and reference-membrane devices (RDC 7/24/2012)

3. 8,215,495 
High molecular weight poly(2,6-dimethyl-1,4-phenylene ether) and process therefor
 
Delsman and Schoenmakers of Sabic Innovative Plastics IP B.V., Netherlands, developed a poly(2,6-dimethyl-1,4-phenylene ether) having a high molecular weight and a reduced content of low molecular weight species using the oxidative polymerization, chelation, and isolation steps. The poly(2,6-dimethyl-1,4-phenylene ether) is particularly useful for the fabrication of fluid separation membranes. (RDC 7/10/2012)

2. 8,192,649 
Capped poly(arylene ether) composition and method
 
Yeager et al of Sabic Innovative Plastics, Netherlands, capped a poly(arylene ether) resin including reacting a capping agent with a blend of two or more poly(arylene ether) resins having different intrinsic viscosities. Cured compositions prepared from these capped poly(arylene ether) resins exhibit improved balances of stiffness, toughness, and dielectric properties compared to compositions with two or more separately capped and isolated poly(arylene ether) resins. (RDC 6/18/2012)

1. 8,188,142 
Polymers from propenyl ether monomers
 
Purdy of the US Navy, Washington, DC, The compounds shown below. R is --O--, --O--(CH2)n--O--, or --(O--CH2--CH2)n--O--; and n is a positive integer. Heating an allyl ether compound in the presence of Fe(CO)5 and a base to form the below propenyl ether monomer and polymerizing the propenyl ether monomer. (RDC 6/7/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

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Tel: 610 363 9920
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E-Mail: cornelrd@bee.net  

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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
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** Date of latest addition; date of first entry is 5/11/2012.