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Polyphenols, such as bisphenol A or novolacs can react with epoxy resins at elevated temperatures (130–180 °C, 266–356 °F), normally in the presence of a catalyst. The resulting material has ether linkages and displays higher chemical and oxidation resistance than typically obtained by curing with amines or anhydrides.
Polyphenols (/ ˌ p ɒ l i ˈ f iː n oʊ l,-n ɒ l /) are a large family of naturally occurring phenols. [1] They are abundant in plants and structurally diverse. [1] [2] [3] Polyphenols include phenolic acids, flavonoids, tannic acid, and ellagitannin, some of which have been used historically as dyes and for tanning garments.
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Texas Lt. Gov. Dan Patrick said U.S.-owned border wall materials, which were available for sale, were pulled from an Arizona auction at the government's request. The Lonestar State had shown ...
The Port of Texas City, operated by the Port of Texas City / Texas City Terminal Railway, is the eighth-largest port in the United States and the third-largest in Texas, with waterborne tonnage exceeding 78 million net tons. The Texas City Terminal Railway Company provides an important land link to the port, handling over 25,000 carloads per year.
The new king of Denmark has changed the country’s royal coat of arms to more prominently feature Greenland in an apparent rebuke of President-elect Donald Trump’s plan to take over the ...
Sugar-sweetened beverages were responsible for an estimated 9.8% of new type 2 diabetes cases and 3.1% of cardiovascular disease cases worldwide in 2020, a new study found.
The Texas City tin smelter is a former metallurgical plant in Texas City and La Marque, United States. It was created in 1942, during the Second World War, to secure the American production of tin from imported ores. It operates until 1991, gradually diversifying. [1]