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Changed vote makes difference in ITC decision
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WASHINGTON—The shift of one vote caused the International Trade Commission to make a final determination that the U.S. truck and bus tire manufacturing industry is not being materially...
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WASHINGTON—The shift of one vote caused the International Trade Commission to make a final determination that the U.S. truck and bus tire manufacturing industry is not being materially injured because of imports from China. WASHINGTON—The shift of one vote caused the International Trade Commission to make a final determination that the U.S. truck and bus tire manufacturing industry is not being materially injured because of imports from China. $WASHINGTON—The shift of one vote caused the International Trade Commission to make a final determination that the U.S. truck and bus tire manufacturing industry is not being materially injured because of imports from China.
Goodyear, Cooper Tire employees honored with STEP Ahead awards
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AKRON—The Manufacturing Institute will honor five women who work for Goodyear and Cooper Tire & Rubber Co. at its upcoming Women in Manufacturing STEP (Science, Technology, Engineering...
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AKRON—The Manufacturing Institute will honor five women who work for Goodyear and Cooper at its upcoming Women in Manufacturing STEP (Science, Technology, Engineering and Production) Ahead Awards. AKRON—The Manufacturing Institute will honor five women who work for Goodyear and Cooper at its upcoming Women in Manufacturing STEP (Science, Technology, Engineering and Production) Ahead Awards. $AKRON—The Manufacturing Institute will honor five women who work for Goodyear and Cooper at its upcoming Women in Manufacturing STEP (Science, Technology, Engineering and Production) Ahead Awards.
James Walker to unveil new elastomer family
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CHESHIRE, England—A sealing products manufacturer from the United Kingdom is ready to release a new family of elastomers it will use in its goods to meet the ever-increasing demands of the...
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CHESHIRE, England—A sealing products manufacturer from the United Kingdom is ready to release a new family of elastomers it will use in its goods to meet the ever-increasing demands of the oil and gas industry. CHESHIRE, England—A sealing products manufacturer from the United Kingdom is ready to release a new family of elastomers it will use in its goods to meet the ever-increasing demands of the oil and gas industry. $CHESHIRE, England—A sealing products manufacturer from the United Kingdom is ready to release a new family of elastomers it will use in its goods to meet the ever-increasing demands of the oil and gas industry.
Oil and gas market looking up, but profits hard to come by
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WASHINGTON—This year will be better than 2016 for the oil and gas industry and the rubber and polymer product manufacturers that supply them, according to industry officials and experts....
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WASHINGTON—This year will be better than 2016 for the oil and gas industry and the rubber and polymer product manufacturers that supply them, according to industry officials and experts. WASHINGTON—This year will be better than 2016 for the oil and gas industry and the rubber and polymer product manufacturers that supply them, according to industry officials and experts. $WASHINGTON—This year will be better than 2016 for the oil and gas industry and the rubber and polymer product manufacturers that supply them, according to industry officials and experts.
China slides to No. 2 tire trading partner
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AKRON—Canada replaced China last year as the No. 1 trading partner of the U.S. in tires. The value of China's imports to the U.S.—impacted primarily by the cut in consumer tire...
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AKRON—Canada replaced China last year as the No. 1 trading partner of the U.S. in tires. AKRON—Canada replaced China last year as the No. 1 trading partner of the U.S. in tires. $AKRON—Canada replaced China last year as the No. 1 trading partner of the U.S. in tires.
ITC antidumping decision brings mixed reactions
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As with any decision regarding imported tires and tariffs and duties, there are winners and losers.That certainly is the case following the surprising Feb. 22 decision by the U.S. International...
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As with any decision regarding imported tires and tariffs and duties, there are winners and losers. As with any decision regarding imported tires and tariffs and duties, there are winners and losers. $As with any decision regarding imported tires and tariffs and duties, there are winners and losers.
Henkel, Benteler making composite leaf springs for Volvo
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DUESSELDORF, Germany—Laundry and personal care products-to-reactive polyurethane systems company, Henkel A.G. and automotive composites firm Benteler S.G.L. are supplying polyurethane...
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DUESSELDORF, Germany—Henkel and Benteler are supplying polyurethane composite leaf springs to the Volvo S90 and V90 following their introduction on the XC90 crossover SUV. DUESSELDORF, Germany—Henkel and Benteler are supplying polyurethane composite leaf springs to the Volvo S90 and V90 following their introduction on the XC90 crossover SUV. $DUESSELDORF, Germany—Henkel and Benteler are supplying polyurethane composite leaf springs to the Volvo S90 and V90 following their introduction on the XC90 crossover SUV.
Lubrizol invests to grow medical unit
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ANAHEIM, Calif.—Lubrizol Corp.'s LifeSciences unit has added thermoplastic polyurethane compounding abilities through a partnership with a medical compounder. Compounding Solutions, which...
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ANAHEIM, Calif.—Lubrizol's LifeSciences unit has added thermoplastic polyurethane compounding abilities through a partnership with a medical compounder. ANAHEIM, Calif.—Lubrizol's LifeSciences unit has added thermoplastic polyurethane compounding abilities through a partnership with a medical compounder. $ANAHEIM, Calif.—Lubrizol's LifeSciences unit has added thermoplastic polyurethane compounding abilities through a partnership with a medical compounder.
Doublestar inks Kumho deal, but Park counter-offer looms
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SEOUL, South Korea—China's Qingdao Doublestar Co. said it has signed an agreement with Kumho Tire creditors to buy a 42 percent stake in the South Korean tire maker in a deal that could...
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SEOUL, South Korea—Doublestar said it has signed an agreement with Kumho Tire creditors to buy a 42 percent stake in the South Korean tire maker in a deal that could enable Doublestar to further expand in China. SEOUL, South Korea—Doublestar said it has signed an agreement with Kumho Tire creditors to buy a 42 percent stake in the South Korean tire maker in a deal that could enable Doublestar to further expand in China. $SEOUL, South Korea—Doublestar said it has signed an agreement with Kumho Tire creditors to buy a 42 percent stake in the South Korean tire maker in a deal that could enable Doublestar to further expand in China.
Raumedic ready to chase new U.S. business
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ANAHEIM, Calif.—Raumedic A.G. is poised to make further inroads into the North American market now that it has a manufacturing presence in the region. Its first plant in the U.S., located...
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ANAHEIM, Calif.—Raumedic is poised to make further inroads into the North American market now that it has a manufacturing presence in the region. ANAHEIM, Calif.—Raumedic is poised to make further inroads into the North American market now that it has a manufacturing presence in the region. $ ANAHEIM, Calif.—Raumedic is poised to make further inroads into the North American market now that it has a manufacturing presence in the region.
Digital Edition
Digital Edition
Published on January 1, 2006

New Insights into the Freeze-Thaw Stability of Polymer Latexes

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Date Published January 1, 2006
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This Report has been authored by:H.T. Davis at University of Minnesota #with# Xiaobo Gong at University of Minnesota #with# Joerg Leuninger at BASF AG #with# Cheng-Le Zhao at BASF AG #with# Rolf Dersch at BASF AG #with# Konrad Roschmann at BASF AG #with# L.E. Scriven at University of Minnesota

Freeze-Thaw (F/T) stability of polymer latexes and waterborne coatings formulations is of considerable industrial importance. Because of environmental concerns and legislative measures, there has been a driving force in recent years in the coatings industry to develop low-or-zero VOC (Volatile Organic Compounds) waterborne formulations. In a lower VOC formulation (<50 g/L), the amount of antifreeze such as glycols that can be added has to be substantially reduced and is most probably no longer sufficient to impart F/T stability. It is a challenging goal that the next-generation polymer latexes be improved in such a way that they are not only F/T-stable themselves but are also capable of providing F/T stability to the coatings formulations which are based on them. Partly because of the lack of adequate microscopic techniques, fundamental aspects of F/T stability have not been studied extensively and are not well understood. The objective of this work is to try to clarify and better understand the effects of the key factors affecting the F/T stability of polymer latexes. In addition to following viscosity changes during F/T cycles, we apply advanced cryogenic SEM technique coupled with a high pressure freezing apparatus, which allows us to visualize micro-structural changes and to study the effects of the freezing and thawing processes separately. Relationships between F/T stability and polymer and colloidal characteristics are analyzed. Cryogenic electron micrographs also provide information for understanding the cause of viscosity rise during the F/T processes in F/T unstable latex. 
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