Carboxyl-terminated liquid polybutadiene rubber is generally called CTPB for short. For there are carboxyl at both ends of the polymeric molecule, this polymer carries on the structurization along the carboxyl group, the distribution of the network is neat and without any free terminal. so it has excellent mechanical performance. The carboxyl end groups can react with epoxy resin, which has a good toughening effect on epoxy resin. Compared with CTBN, CTPB has lower viscosity, better low-temperature performance and flexibility. The product not only can be used in solid rocket propellant, but also can be used in elastomers, adhesives, sealing material, epoxy resin modification and electrical resistant material. Packed in 50kg/drum, 180kg/drum, The storage period is 1 year. Safety instructions: Storage should be at cool, dry and ventilate. The best condition is among -20 ~ 38℃. Shelf life of 12 months, if expire, still used if up to standard through retest. When transportation should avoid rain, sunlight. Don’t mix with strong oxidizer. item Indicator Grade 1 Grade 2 Description Tan or light yellow transparence liquid, no visible micelle and mechanical impurities viscosity(40℃), Pa.s       ≤15 ≤12 Carboxyl value,mmol/g 0.40~0.47 0.43~0.52 Water content, %                          ≤0.05 ≤0.05 Molecular weight 4100 - 4500 2800 - 3400 Functionality 1.75 - 1.95 1.90 - 2.10   No. Code Chemical Name 1. HTPB Hydroxyl-Terminated Polybutadiene 2. EHTPB Epoxidized hydroxyl-terminated polybutadien 3. HTBN Hydroxy-terminated liquid nitrile butadiene rubber 4. ATBN Amino-terminated liquid nitrile butadiene rubber 5. HTBS Hydroxy-terminated Butadiene-styrene Random Copolymer 6. CTBN Carboxy-terminated Nitrile Butadiene Rubber (CTBN) 7. LPB Liquid Polybutadiene (LPB) 8. EPB Epoxidized Polybutadiene 9. LSBR Liquid Butadiene Styrene Rubber  10. LPBOH Monohydroxy liquid polybutadiene 11. RE Triphenylmethane -4,4`,4``-triisocyanate 12. RFE Tris(4-isocyanatophenyl) thiophosphate 13. RN 27% Polyisocyanate and 73% Ethyl Acetate 14. RC 35% TDI-bases polyisoyanurate and 65% Ethyl acetate 15. NDI 1,5-Naphthalene Diisocyanate 16. DDI Dimeryl Diisocyanate 17. TMXDI Tetramethylxylylene Diisocyanate  18. TMI 1-(1-Isocyanato-1-methylethyl)-3-isopropenylbenzene 19. Trans-CHDI Trans-1,4-cyclohexane diisocyanate 20. MOPA 3-Methoxypropylamine 21. PET Polyether Medium Molecular Weight PET Polyether 22. BN 99 Boron Nitride 23. THEED N,N,N',N'-Tetrakis(2-hydroxyethyl)ethylenediamine 24. DCDPS 4,4'-Dichlorodiphenyl sulfone 25. Oleyl diamine N-Oleyl-1,3-Propylene Diamine 26. D1821 Dihydrogenated tallow dimethyl ammonium chloride 27. Al powder Nitrogen Atomized Spherical Al Powder/ aluminite powder 28. AP AP(Ammonium perchlorate) 29. ... www.theoremchem.com