polyisobutylene(PIB)

Product Description

Grade Item SDG****0 SDG****0 SDG****0 SDG****0 Viscosity Average Molecular Weight [MV ] *0,**0 *0,**0 *0,**0 *0,**0 Specific Gravity (*5/ 4 °C ) 0.*2 0.*2 0.*2 0.*2 Refractive Index ( N *0 /D ) 1.**7 1.**7 1.**8 1.**8 Flash Point COC ( °C ) **8 **8 **8 **8 Appearance transparent and no foreign substances Volatiles **5 °C 2h wt% &#***4; 1.0 &#***4; 1.0 &#***4; 1.0 &#***4; 1.0 Low Polymer 0.2 0.2 0.2 0.2 Pour Point ( °C ) *7.5 *7.5 *7.5 **2.5 Penetration Degree ( *5 °C ) **0g × 5sec **5 **3 **9 **4 **0g × 5sec **2 **8 **0 *6 Staudinger Index *6.5 *7.5 *2.5 *4.5 Viscosity Speciality Viscosity ( **0 °C )(cSt) *6,**0 *0,**0 **0,**0 **0,**0 G · P · C Mw *6,**0 *6,**0 *6,**0 *1,**0 Molecular Weight Distributing Index 2.5 2.5 2.5 2.5 Electric Speciality Tg d ( *0 °C )*0Hz 0.****1 0.****1 0.****1 0.****1 Electric Volume Resistivity ( *0 °C )( O-cm) *0x***4 *0x***4 *0x***4 *0x***4 Dielectric Coefficient ( *0 °C ) 2.0 2.0 2.0 2.0 [ Properties ] Mid Molecular Weight Polyisobutylene is a kind of transparent , insipid, smellless, innoxious semi-solid. it stays stably with oxygen ? ozone , acid , alkali , ultraviolet radiation and etc. Not dissolve in water , but gasoline and benzene. [ Uses ] 1. Sealant : Polyisobutylene is the same with manufacture each kind of sealant to improve the products'flexility and penetrability. 2. Rubber : Polyisobutylene mixed with natural rubber and synthetic rubber ensures higher workability, addition of adhesion, and prevention of aging or cracking, improvement in resistance to water, electric insulation and resistance to ozone at normal and high temperatures. 3. Paraffin : Polyisobutylene mixed with paraffin can increase anti-dr