Since the beginning of rubber discovery, Westerners have continued to develop its use. Germany's Frederick made a pair of riding boots with rubber dissolved in ether. Rubber can erase pencil marks, so people make it into rubber. But rubber has a fatal flaw, which is too sensitive to temperature. When the temperature is slightly higher, it will become soft and sticky, and it will smell bad; Sɛ ɔhyew no yɛ mmerɛw a, ɛbɛyɛ brittle na ɛyɛ den. Saa sintɔ yi ma rɔba nneɛma nni gua.
Wɔ afe 1834 ahohuru bere mu no, Goodyear kɔsraa New York Indiafo rɔba adwumakuw. ɔtee sɛ saa rɔba yi haw rɔba adwuma no nyinaa, nanso rɔba no wɔ nneɛma a ɛyɛ fɛ a ɛtoatoa so te sɛ nea ɛyɛ den kɛse, plasticity, nea ɛtra hɔ kyɛ, nsu a ɛyɛ den ne nneɛma a wɔde siw nsu ano. Goodyear no asi gyinae sɛ wobesua nsakrae a wɔbɛyɛ wɔ rɔba.
Goodyear nyɛ nnuruyɛfo anaasɛ nyansahufo. wɔ adwumayɛbea, ɔyɛ adwuma te sɛ odwumayɛni, bere nyinaa de nneɛma ahorow gu so de rɔba. sɔ hwɛ wɔ 1837 mu, Goodyear de nitric acid yɛɛ rɔba krataa no ho adwuma na onyaa tumi krataa a wɔde yɛ “acid gas process".}} wɔ January 1839 mu, Goodyear’s experiment deliated, lead byough{0 Ɛno, na ɛnya adeɛ a ɛte sɛ aboa nhoma. Saa adeɛ yi nsɛe wɔ ɔhyew a ɛkorɔn mu sene rɔba a ɛyɛ den a wɔtaa frɛ no. wɔ nkɔsoɔ a ɛtoatoa soɔ akyi no, Goodyear gye dii sɛ adeɛ a ɔsiesiee no rensɛe wɔ ɔhyeɛ biara a ɛba fam sene baabi a ɛrebobɔ no, na wɔwoo rɔba vulcanization mfiridwuma no{9}}