Natural rubber is sticky, as in rubber cement; with this process patented in 1844, it can be used for hockey pucks
[DOC] [TLE] OOLAC - #Chemical_processes - OOLAC   [PAR] Chemical_processes - Deacon process, Kraft process, Oil refinery, Alkylation, ... 
U.S. Patent 296,935 was issued in 1884, and a pulp mill using this technology .... 
Oil can be used in a variety of ways because it contains hydrocarbons of ..... 
Uncured natural rubber is sticky, deforms easily when warm, and is brittle when 
cold.