The first plastic was cellulose nitrate developed in the mid-19th Century, which was popular for collars and cuffs. The second was casein hardened with formaldehyde and patented in Britain in 1911.
The first plastic was cellulose nitrate developed in the mid-19th Century, which was popular for collars and cuffs. The second was casein hardened with formaldehyde and patented in Britain in 1911.
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