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Auto industry grapples with multiple forces shaking up business
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DETROIT—It's an exciting time to be in the automotive industry, but that also means there's plenty of uncertainty to go around.With trade relations going under the knife, emerging vehicle...
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DETROIT—It's an exciting time to be in the automotive industry, but that also means there's plenty of uncertainty to go around. DETROIT—It's an exciting time to be in the automotive industry, but that also means there's plenty of uncertainty to go around. $DETROIT—It's an exciting time to be in the automotive industry, but that also means there's plenty of uncertainty to go around.
Bridgestone to expand Tennessee truck tire plant
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MORRISON, Tenn.—Bridgestone Americas Inc. is planning to break ground later this year on an expansion that will increase capacity at its Warren County, Tenn., truck/bus tire plant by about 8 ...
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MORRISON, Tenn.—Bridgestone Americas is planning to break ground later this year on an expansion that will increase capacity at its Warren County, Tenn., truck/bus tire plant by about 8 percent. MORRISON, Tenn.—Bridgestone Americas is planning to break ground later this year on an expansion that will increase capacity at its Warren County, Tenn., truck/bus tire plant by about 8 percent. $MORRISON, Tenn.—Bridgestone Americas is planning to break ground later this year on an expansion that will increase capacity at its Warren County, Tenn., truck/bus tire plant by about 8 percent.
Coker Tire CEO Wade Kawasaki, investor group take ownership of company
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CHATTANOOGA, Tenn.—A group of Coker Group executives, led by President and CEO Wade Kawasaki, has partnered with Irving Place Capital to acquire the supplier of collector car and motorcycle...
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CHATTANOOGA, Tenn.—A group of Coker Group executives, led by President and CEO Wade Kawasaki, has partnered with Irving Place Capital to acquire the supplier of collector car and motorcycle tires and wheels. CHATTANOOGA, Tenn.—A group of Coker Group executives, led by President and CEO Wade Kawasaki, has partnered with Irving Place Capital to acquire the supplier of collector car and motorcycle tires and wheels. $CHATTANOOGA, Tenn.—A group of Coker Group executives, led by President and CEO Wade Kawasaki, has partnered with Irving Place Capital to acquire the supplier of collector car and motorcycle tires and wheels.
New technology may separate ethylene from ethane more efficiently
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SAN ANTONIO—Researchers are finding unusual ways to cut the production cost for ethylene. Cracking naphtha from crude oil is an important ethylene production route. However, this reaction...
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SAN ANTONIO—Researchers are finding unusual ways to cut the production cost for ethylene. SAN ANTONIO—Researchers are finding unusual ways to cut the production cost for ethylene. $SAN ANTONIO—Researchers are finding unusual ways to cut the production cost for ethylene.
Photos: Semperit expands Czech hose plant
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VIENNA—The Semperit Group invested $30.4 million in an expansion at the Semperflex Optimit s.r.o. location in Odry, Czech Republic. The expansion increases production capacity to 109...
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VIENNA—The Semperit Group invested $30.4 million in an expansion at the Semperflex Optimit location in Odry, Czech Republic. VIENNA—The Semperit Group invested $30.4 million in an expansion at the Semperflex Optimit location in Odry, Czech Republic. $VIENNA—The Semperit Group invested $30.4 million in an expansion at the Semperflex Optimit location in Odry, Czech Republic.
Toyoda Gosei expands in China with acquisition of Hubei Rock
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KIYOSU, Japan—Toyoda Gosei Co. Ltd. is purchasing a majority stake in Hubei Rock Rubber and Seal Technology Co. Ltd. to strengthen its automotive parts business in China. The deal is...
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KIYOSU, Japan—Toyoda Gosei is purchasing a majority stake in Hubei Rock Rubber and Seal Technology to strengthen its automotive parts business in China. KIYOSU, Japan—Toyoda Gosei is purchasing a majority stake in Hubei Rock Rubber and Seal Technology to strengthen its automotive parts business in China. $KIYOSU, Japan—Toyoda Gosei is purchasing a majority stake in Hubei Rock Rubber and Seal Technology to strengthen its automotive parts business in China.
Continental completes NVH footprint with Cooper Standard deal
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NOVI, Mich.—Certain opportunities are just too perfect to pass up. Continental A.G.'s Vibration Control business, which produces anti-vibration parts like engine mounts for the automotive...
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NOVI, Mich.—Continental's Vibration Controls business has agreed to acquire Cooper Standard's Anti-Vibration Systems business for $265.5 million, subject to closing conditions and antitrust approval in the relevant countries. NOVI, Mich.—Continental's Vibration Controls business has agreed to acquire Cooper Standard's Anti-Vibration Systems business for $265.5 million, subject to closing conditions and antitrust approval in the relevant countries. $NOVI, Mich.—Continental's Vibration Controls business has agreed to acquire Cooper Standard's Anti-Vibration Systems business for $265.5 million, subject to closing conditions and antitrust approval in the relevant countries.
DuPont to build $80 million plant in China
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ZHANGJIAGANG, China—DuPont Transportation & Advanced Polymers is investing more than $80 million to build a new manufacturing facility in Zhangjiagang that will produce "compounded high-...
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ZHANGJIAGANG, China—DuPont Transportation & Advanced Polymers is investing more than $80 million to build a new manufacturing facility in Zhangjiagang that will produce "compounded high-end engineering plastics and adhesives." ZHANGJIAGANG, China—DuPont Transportation & Advanced Polymers is investing more than $80 million to build a new manufacturing facility in Zhangjiagang that will produce "compounded high-end engineering plastics and adhesives." $ZHANGJIAGANG, China—DuPont Transportation & Advanced Polymers is investing more than $80 million to build a new manufacturing facility in Zhangjiagang that will produce "compounded high-end engineering plastics and adhesives."
Japan's auto makers wonder how to go more 'local' under USMCA
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TOKYO—North America's auto makers face a new reality of sourcing vehicle content under the free-trade deal agreed to by the U.S., Canada and Mexico. But for Japan's auto companies, the...
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TOKYO—North America's auto makers face a new reality of sourcing vehicle content under the free-trade deal agreed to by the U.S., Canada and Mexico. But for Japan's auto companies, the moment is particularly worrisome. TOKYO—North America's auto makers face a new reality of sourcing vehicle content under the free-trade deal agreed to by the U.S., Canada and Mexico. But for Japan's auto companies, the moment is particularly worrisome. $TOKYO—North America's auto makers face a new reality of sourcing vehicle content under the free-trade deal agreed to by the U.S., Canada and Mexico. But for Japan's auto companies, the moment is particularly worrisome.
BKT plans $100 million investment for U.S. tire plant
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MAHARASHTRA, India—Off-highway tire manufacturer Balkrishna Industries Ltd. (BKT) is budgeting $100 million for the plant it is planning to build in the U.S., the company disclosed in a Nov. ...
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MAHARASHTRA, India—Off-highway tire manufacturer Balkrishna Industries is budgeting $100 million for the plant it is planning to build in the U.S. MAHARASHTRA, India—Off-highway tire manufacturer Balkrishna Industries is budgeting $100 million for the plant it is planning to build in the U.S. $MAHARASHTRA, India—Off-highway tire manufacturer Balkrishna Industries is budgeting $100 million for the plant it is planning to build in the U.S.
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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