Miscellaneous Plastics Materials

The materials dealt with in this chapter may be classed chemically into two groups  

With the exception of some of the natural rubber derivatives these materials were available during the first decade of this century and, together with celluloid, actually completed the range of plastics materials then in commercial use. In spite of being ousted from important markets they have continued to find use in specialised applications, details of which will be given in subsequent sections of this chapter. The historical significance of these materials was dealt with in the first chapter of this book. 

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