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LPBOH (Monohydroxy Liquid Polybutadiene(LPBOH) CAS No. 63231-65-2 Monohydroxy HTPB )
Monohydroxy liquid polybutadiene
LPBOH/ M-HTPB
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Hydroxyl-Terminated Polybutadiene(HTPB) CAS No. 69102-90-5 HTPB
Chemical Name: Hydroxyl-terminated polybutadiene
Code: HTPB
CAS No. 69102-90-5
Chemical name: Hydroxyl-terminated polybutadiene
CAS No.: 69102-90-5
Code: HTPB
Standard: GB/GJB(GJB1327A-2021)
HS CODE: 3902 9000.30
Feature: 10,000 MT annual capacity; Customization of various specifications is available.
Product Description
HTPB(Hydroxyl-Terminated Polybutadiene) is a high-molecular polymer synthesized from butadiene monomers. It carries reactive hydroxyl groups at both ends of molecular chains and exists as a low-viscosity liquid at room temperature.
Structural Characteristics of HTPB
Telechelic liquid polybutadiene with reactive –OH at both chain ends
Polybutadiene backbone rich in C=C double bonds
Composed of cis-1,4, trans-1,4 and 1,2-vinyl structures
Non-polar main chain, outstanding chain flexibility
Hydroxyl terminals capable of crosslinking to form 3D networks
Product properties & Features
Reactive terminal hydroxyl groups
Pale, high-clarity low-viscosity liquid
Excellent mechanical performance with glass transition temperature down to -80 ℃
Remarkable low-temperature flexibility & cold resistance
Superior hydrophobicity and water resistance
Ultra-low moisture vapor permeability
Great resistance to hydrolysis, aqueous acids, alkalis and various chemicals
Outstanding abrasion resistance
Strong adhesion to various substrates
Premium electrical insulation properties
Good compatibility with multiple resin systems
Applications
Adhesives
Coatings
Solid Propellants
High-performance Structural Adhesives & Sealants
Rubber & Plastic Products
Electrical Insulation Materials
Polyurethane (PU) Elastomers
Composite Materials for Automotive & Aerospace
Construction Materials: Roof Waterproofing, Anti-corrosion & Thermal Insulation Materials, Construction Adhesives
Electronic Potting & Encapsulation Compounds
Polymer Modification
Packing & Storage
50kg/plastic drum or 170kg/metal drum packaging.
Storage should be cool, dry and ventilated. The optimum temperature is -20~38'c.
The shelf life is 12 months, after the expiration of the re-inspection can still be used.
Avoid rain and sun during transportation. Do not mix with strong oxidants.
Technical Index
| Item | Grade l | Grade ll | Grade lll | Grade lV | Grade V | Grade Vl |
| Appearance | achromatous or light yellow, no visible impurities | |||||
| Hydroxyl value,(mmol/g) | 0.47-0.53 | 0.54-0.64 | 0.65-0.70 | 0.71-0.80 | 0.81-1.00 | 1.00-1.40 |
| Viscosity(40°C Pa.s)≤ | 9.5 | 8.5 | 4.0 | 3.5 | 5.0 | 3.0 |
| Peroxide mass fraction,% | 0.04 | 0.04 | 0.05 | 0.05 | 0.10 | 0.10 |
| Moisture,wt% ≤ | 0.05 | 0.05 | 0.05 | 0.05 | 0.10 | 0.10 |
| Volatile Content,% ≤ | 0.5 | 0.5 | 0.65 | 0.65 | 1.0 | 1.0 |
| Molecular weight | 3800-4600 | 3300-4100 | 3000-3600 | 2700-3300 | 2300-3000 | 1600-2400 |
NOTE: We can customize any versions of HTPB according to customers' specifications, including single-chain, hydrogenated, and epoxidized HTPB.
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