polyisobutylene

Detailed Product Description

Detailed Product Description
                                         HRD Medium Molecular Polyisobutylene (Industrial Grade) 

TradeMark	Viscosity -average Molecular Weight(Mv)	Dynamic Viscosity (mPa.s)(20oC)	Dynamic Viscosity (mPa.s)(150oC)	Distribution of Molecular Weight(Mw/Mn)	VolatileMatter  (105,2h) Wt%
HRD-250	20000-30000	5.75X107-3.00X108	1.5X105-1.7X106	2.0-3.0	≤1.0
HRD-350	30000-40000	3.00X108-1.35X109	1.7X106-3.8X106
HRD-450	40000-50000	1.35X109-4.70X109	3.8X106-1.3X107
HRD-550	50000-55000	4.70X109-1.07X1010	1.3X107-2.35X107
HRD-600	55000-60000	1.07X1010-2.30X1010	2.35X107-4.5X107
HRD-650	60000-65000	2.30X1010-2.99X1010	4.5X107-5.16X107

Physical and Chemical Properties:
The product is a kind of yellowish transparent semi-solid substance, nontoxic and odorless. It has good chemical stability and resistance to heat, ozone, acid and alkali, UV ray, and weather, etc. It has high electric volume resistance, low expansion coefficient, no dielectric medium, excellent electrical insulation no residues after pyrolysis, and good compatibility with polyethylene and paraffin wax, etc. It is soluble in organic solvents such as gasoline and benzene etc., but not in water and alcohol type solvents, and has good shearing stability.

Main Applications:
1)Sealing Compound: Poly-isobutylene is suitable for producing various sealing agents and hollow glass sealing compounds to increase the flexibility and penetrability of products for its excellent features and properties, such as atmosphere resistance, aging resistance, weather resistance and impermeability to water vapor.
2)Rubber Modification: Poly-isobutylene has excellent aging resistance and plasticity, can be used to modify the rubber. It is now widely used in high-voltage insulating and self-adhesive tapes, and rubber strips and other manufacturing fields.
3)Paraffin Wax: Poly-isobutylene, after being mixed with paraffin wax or microcrystal wax, can increase its tensile property and enhance the brittleness of its products; especially when used for packaging frozen food, its flexibility and acid resistance can be increased.
4)Printing ink: Poly-isobutylene can act as the thickener and dispersant when added into printing ink, such as printing pulpy inks, polyethylene cyclic photocopy, printing ink; it can also has a thickening function in the printing ink, to prevent air crack.
5)Lubricant Grease: Adding in lubricant grease, poly-isobutylene can improve the viscosity and extreme pressure resistance of its products.

Others:
High molecular material modification, viscosity increasing agglomerate for tensile twisting film, damping grease and so on.