Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
350321, 528 80, 528 81, 528 85, C08G 1838
An S-alkyl thiocarbamate base lens resin is obtained by reacting one or more NCO-containing compounds, such as xylylene diisocyanate, hexamethylene diisocyanate and/or tetrachloroxylylene diisocyanate, with one or more SH-containing aliphatic compounds, for example, a di(2-mercaptoalkyl) ether.
patent: 3114734 (1963-12-01), Gobran et al.
Mitsui Toatsu Chemicals Incorporated
Welsh Maurice J.
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