| http://www.w3.org/ns/prov#value | - Borden got into plastics from the milk end of things, with plastics based upon casein, which in turn is a protein extracted from milk. (Long chain proteins are the original plastic building blocks, although these days we have largely moved on from naturally occurring proteins to carbon-hydrogen molecules produced from crude oil.) Transparent forms of these plastics were once used for clear windo
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