Hydrogenated nitrile roba (HNBR ma ọ bụ HSN) bụ ngwaahịa nke hydrogenation na saturation nke carbon-carbon double bond na molecular yinye nke nitrile roba, ya mere a na-akpọ ya ukwuu jujuru nitrile roba.

Fluoroelastomer bụ elastomer polymer sịntetị nke nwere atom fluorine na atom carbon nke isi yinye ma ọ bụ n'akụkụ ya. Iwebata nke atom fluorine na-enye rọba ezigbo nguzogide okpomọkụ, nguzogide oxidation, nguzogide mmanụ, nguzogide corrosion na nguzogide ikuku ikuku, a na-ejikwa ya na mbara igwe, ụgbọ elu, ụgbọ ala, mmanụ ala na ngwa ụlọ.

Ethylene propylene roba bụ sịntetik roba na ethylene na propylene dị ka isi monomer, dị ka dị iche iche mejupụtara nke monomer na molekụla yinye, e nwere ọnụọgụ abụọ ethylene propylene roba (EPM) na tertiary ethylene propylene roba (EPDM), Ọ na-ọtụtụ-eji na akpakanamde akụkụ, waya na-eguzogide ọgwụ ihe maka ihe owuwu, waya na-eguzogide ọgwụ, ihe na-eguzogide ọgwụ, ihe na-egbochi ihe na-eme ka ihe na-ewu ụlọ, ihe na-ekpuchi mmiri, ihe na-ekpuchi mmiri, ihe na-eme ka ihe na-eme ka ihe na-arụ ọrụ na-arụ ọrụ. akara akpaaka, ihe mgbakwunye mmanu na ngwaahịa ndị ọzọ.

Zinc oxide bụ ihe inorganic nwere usoro kemịkalụ ZnO, oxide nke zinc. Ọ na-esighi ike na mmiri na soluble na acid na ntọala siri ike. Zinc oxide bụ ihe mgbakwunye kemịkalụ na-ejikarị eme ihe na rọba sịntetịt.