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Patent Abstracts

From 07/15/2014 through 3/13/2012

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Patents with Abstracts

5. 8,192,727 
Sorbitol polyesters having liquid and solid domains
 
O'Lenick, O'Lenick and  O'Lenick, Jr. of SurfaTech Corporation, Georgia, synthesized a series of polymeric sorbitol esters that have two different molecular weight ester chains, one solid and one liquid, which when combined into a single molecule make a polymer that is solid, but has very unique flow properties. These materials find applications as additives to formulations in personal care products where there is a desire to have a structured film (provided by the solid fatty group) and flow properties, (provided by the liquid fatty group). These compounds by virtue of their unique structure provide outstanding skin feel. (RDC 6/19/2012)

4. 8,192,726 
Naturally derived citrate polyesters having liquid and solid domains
 
O'Lenick, O'Lenick and  O'Lenick, Jr. of SurfaTech Corporation, Georgia, synthesized a series of polymeric citrate esters that have two different molecular weight ester chains, one solid and one liquid, which when combined into a single molecule make a polymer that is solid, but has very unique flow properties. These materials find applications as additives to formulations in personal care products where there is a desire to have a structured film (provided by the solid fatty group) and flow properties, (provided by the liquid fatty group). These compounds by virtue of their unique structure provide outstanding skin feel and outstanding waterproof properties in cosmetic formulations most notable sunscreens.  (RDC 6/19/2012)

3. 8,138,233 
Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET)
 
Agarwal et al of Sabic Innovative Plastics, Netherlands, developed a two step process in which a 1,4-butane diol component reacts with a polyethylene terephthalate component under conditions that depolymerize the polyethylene terephthalate component into a molten mixture and the molten mixture is placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers.  They also developed a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butane diol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. (RDC 5/15/2012)

2. 8,133,968 
Poly(orthoester) polymers, and methods of making and using same
 
Alkatout, Benz and Sparer of Medtronic, Minnesota, synthesized poly(orthoester) polymers. The poly(orthoester) polymers can be useful for applications including, for example, medical devices and pharmaceutical compositions. In a preferred embodiment, the poly(orthoester) polymers are biodegradable.  (RDC 5/4/2011)

1. 8,133,955 
Aromatic polyester resin composition and process for production thereof

Sata et al of Kureha Corporation, Japan, developed a polyester with improved barrier properties  consisting of a melt-kneaded product of 99-70 weight parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the composition is characterized by a transesterification rate C.sub.TE (%) of 20-60% determined by formula (1) below based on a peak integration ratio of methylene group in polyglycolic acid appearing at .sigma.4.87 ppm with reference to tetramethylsilane according to .sup.1H-NMR measurement: C.sub.TE (%)=(1-I(B)/I(A)).times.100 (1), wherein I (A): a peak integration ratio of the methylene group of the polyglycolic acid main chain with respect to the alkylene group of the aromatic polyester main chain calculated from the components weight ratio; and I (B): a peak integration ratio of the methylene group of polyglycolic acid main chain to the alkylene group of the aromatic polyester main chain in the resin composition. As a result, the aromatic polyester resin composition obtained by adding a relatively small amount of polyglycolic acid resin is provided with a good harmony of gas-barrier property and transparency.(3/13/2012

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Roger D. Corneliussen
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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 5/4/2012.