Search results
Results from the WOW.Com Content Network
The first plastic made from synthetic components, it was developed by Leo Baekeland in Yonkers, New York, in 1907, and patented on December 7, 1909. [ 3 ] Bakelite was one of the first plastic-like materials to be introduced into the modern world and was popular because it could be moulded and then hardened into any shape.
The list below is of chemical compositions that make up common plastics found in museum collections. These are some plastics that may degrade, but are not seriously harmful to nearby objects: Non-plasticized (rigid) polyvinyl chloride (PVC) [7] The following are "malignant" plastic materials that will age rapidly if left untreated, and which ...
There is usually some degree of modification of the found object, although not always to the extent that it cannot be recognized, as is the case with readymades. Recent critical theory, however, would argue that the mere designation and relocation of any object, readymades included, constitutes a modification of the object because it changes ...
America is certainly the land of plenty in many regards. Our store shelves are stocked with endless varieties of countless products -- and then some. However, from time to time, we hear about a ...
American Plastic Toys' products have been "proudly made in the USA since 1962," and the company makes more than 125 different products at four plants in Michigan and Mississippi, though it notes ...
Parkesine, the first member of the Celluloid class of compounds and considered the first man-made plastic, is patented by Alexander Parkes. [4] 1869: John Wesley Hyatt discovers a method to simplify the production of celluloid, making industrial production possible. 1872: PVC is accidentally synthesized in 1872 by German chemist Eugen Baumann ...
The highest levels of pollution were found in recreation areas, such as South Sand Harbor and Hidden Beach. More than 600 pieces of plastic found polluting popular Lake Tahoe areas, new study ...
Plastic trees can come in a variety of different colors, [2] and one type came with built-in speakers and an MP3 player. [17] Companies such as Mountain King, Barcana and the National Tree Company have marketed increasingly realistic PVC trees made to closely resemble Douglas fir, Ponderosa pine or other common types of Christmas trees. [4]