ChemSpec, Ltd. distributor for Polyisobutylene PIB medium molecular

ChemSpec, Ltd. is authorized distributor in North America for HRD medium molecular weight PIB’s. Shandong Hongrui New Materials Co., Ltd. is a Sino-Hongkong Joint-venture enterprise, founded in 2006, is one of the main manufacturers of polyisobutylene with the brand of HRD. Hongrui has one of the largest base of R&D and production of low and medium molecular weight polyisobutylene, DIB (Diisobutylene ) in China. Shandong Hongrui New Materials Co., Ltd. complies with modern enterprise management system, equipped with international advanced and modern petrochemical production installations, automated distributed control system, product testing instruments and equipments, and obtained ISO9001-2000, ISO14001, ISO22000, and also FDA and REACH preregistration, Kosher certificates etc.

ChemSpec, Ltd. distributor for HRD medium weight PIB's

Shandong Hongrui New Materials Co., Ltd. always upholds the quality first, customer first as the tenet, to implement the business strategy of Develop the Best Product, Provide the Best Service, Create the Best Brand. Shandong Hongrui New Materials Co., Ltd. will always keep its promise to innovate, to create brilliance with you!


HRD’s medium molecular weight PIB’s are used in the following applications:

  • Hot melt butyl sealants/Insulating glass sealants/double glazing sealants/Primary sealants

  • Butyl sealing tapes

  • Pressure sensitive adhesive

  • Lubricant greases

  • Armourred cables

  • Wax and bitumen modifiers

  • Rubber modifiers

  • Electric insulations

  • PV sealants   

For Technical information, simply click on each product for an automatic download.

Trade Name

Medium Molecular Weight PIBS:

HRD 350 and 450

HRD 500, 600, 650, and 950