Quick Search
Addolink B is a high-performance crosslinking agent, primarily composed of 1,4-butanediol, and is extensively utilized in the formulation of polyurethane systems.
Addolink Bs chemical structure enables it to function effectively as a chain extender, reacting with isocyanate groups to form urethane linkages, thereby enhancing the mechanical properties and durability of the final polyurethane products.
Addolink B is a colorless, viscous liquid derived from butane by placement of alcohol groups at each end of its molecular chain and is one of four stable isomers of butanediol.
CAS Number: 110-63-4
Molecular Formula: C4H10O2
Molecular Weight: 90.12
EINECS Number: 203-786-5
Synonyms: 1,4-BUTANEDIOL, Butane-1,4-diol, 110-63-4, Tetramethylene glycol, 1,4-Butylene glycol, 1,4-Dihydroxybutane, 1,4-Tetramethylene glycol, Tetramethylene 1,4-diol, Sucol B, DIOL 14B, 1,4-BD, Agrisynth B1D, HO(CH2)4OH, CCRIS 5984, NSC 406696, HSDB 1112, HOCH2CH2CH2CH2OH, UNII-7XOO2LE6G3, EINECS 203-786-5, 7XOO2LE6G3, BRN 1633445, 1,4 butylene glycol, DTXSID2024666, CHEBI:41189, AI3-07553, NSC-406696, DTXCID804666, EC 203-786-5, 4-01-00-02515 (Beilstein Handbook Reference), BDO, Dabco DBO, Dihydroxybutane, 203-786-5, 615-930-8, 732189-03-6, MFCD00002968, BU1, CAS-110-63-4, 4-hydroxybutanol, 1,4butanediol, 1.4-butanediol, Dabco BDO, 1,4-butandiol, 1,4-butane diol, 1,4-butane-diol, butane 1,4-diol, butane diol-1,4, butane-1-4-diol, 1,4- butandiol, Butan-1.4-diol, 1.4 - butanediol, 1,4-butane-d8-diol, 1,4-BUTANDIOLE, 1,4-Butanediol, 99%, WLN: Q4Q, MLS001061198, CHEMBL171623, 1,4-BUTANEDIOL [MI], 1,4-BUTANEDIOL [HSDB], HMS3039N12, LBA68444, LLA01295, NBA27425, WCA76076, ZCA82949, Tox21_202245, Tox21_303040, NSC406696, STL283940, AKOS000118735, 1,4-Butanediol, for synthesis, 98%, CS-W016669, DB01955, 1,4-Butanediol, ReagentPlus(R), 99%, NCGC00090733-01, NCGC00090733-02, NCGC00257119-01, NCGC00259794-01, BP-21418, SMR000677930, 1,4-Butanediol, ReagentPlus(R), >=99%, Polytetramethylene Ether Glycol Polyol 220, B0680, NS00006936, F71206, 1,4-Butanediol, Vetec(TM) reagent grade, 98%, Q161521, F0001-0222, InChI=1/C4H10O2/c5-3-1-2-4-6/h5-6H,1-4H, 1,4-BUTYLENE GLYCOL;1,4-BUTANEDIOL;1,4-DIHYDROXYBUTANE;AKOS BBS-00004303;BDO;BUTANEDIOL, 1,4-;TETRAMETHYLENE GLYCOL;VERSALINK CURATIVE 1,4 BDO
Addolink B has a role as a neurotoxin, a protic solvent and a prodrug.
Addolink B is a butanediol and a glycol.
Addolink B is used as a chain extender or crosslinking component for polyester and polyether casting elastomers (hot and cold) and for integral skin foam.
The hydroxyl function of each end group of the Butanediol reacts with different mono- and bifunctional reagents: for example with dicarboxylic acids to polyesters, with diisocyanates to polyurethanes, or with phosgene to polycarbonates.
Addolink B is a high-quality intermediate.
Addolink B and its derivatives are widely used for producing plastics, solvents, electronic chemicals and elastic fibers.
Addolink B is also a building block for the synthesis of polyesterpolyols and polyetherpolyols.
Addolink B is the most significant producer of 1,4-Butanediol and its derivatives worldwide.
In the production of polyurethane elastomers, Addolink B plays a crucial role by contributing to the formation of hard segments within the polymer matrix.
These hard segments are responsible for the material's rigidity and strength, making the elastomers suitable for applications that demand high mechanical performance, such as in automotive parts, industrial wheels, and rollers.
Addolink B is a butanediol that is butane in which one hydrogen of each of the methyl groups is substituted by a hydroxy group.
A colourless, water-miscible, viscous liquid at room temperature (m.p. 16℃) with a high boiling point (230℃), it is mainly used for the production of other organic chemicals, particularly the solvent oxolane (also known as tetrahydrofuran or THF).
The reaction between Addolink B and isocyanates leads to the formation of the hard polyurethane segments.
The rapidity with which these hard segments are formed in the reaction mixture reduces the demoulding time.
Beyond elastomers, Addolink B is also employed in the manufacture of integral skin foams, which are characterized by a dense outer skin and a softer core.
This structure is particularly beneficial in applications like seating and cushioning, where both comfort and structural integrity are desired.
Addolink B is a specialized chemical compound predominantly based on 1,4-butanediol, and it functions as a low molecular weight linear diol that plays an essential role as a chain extender in the synthesis of polyurethane materials, especially those requiring optimized mechanical strength, elasticity, and durability.
It is commonly used in polyurethane cast elastomer systems, where it reacts with isocyanate prepolymers during the curing process to form robust urethane linkages, ultimately producing a polymer matrix with well-defined phase separation between hard and soft segments — a critical feature for tailoring the mechanical behavior of the final elastomer product.
Melting point: 16 °C (lit.)
Boiling point: 230 °C (lit.)
Density: 1.017 g/mL at 25 °C (lit.)
Vapor density: 3.1 (vs air)
Vapor pressure: <0.1 hPa (20 °C)
Refractive index: n20/D 1.445 (lit.)
Flash point: 135 °C
Storage temp.: Store below +30 °C
pKa: 14.73 ± 0.10 (Predicted)
Form: Liquid
Color: Clear colorless
Odor: Odorless
pH: 7–8 (500 g/L, H₂O, 20 °C)
Explosive limit: 1.95–18.3% (V)
Viscosity: 83.2 mm²/s
Water solubility: Miscible
Sensitive: Hygroscopic
BRN: 1633445
Dielectric constant: 30.0 (30 °C)
Stability: Stable. Combustible. Incompatible with strong oxidizing agents, mineral acids, acid chlorides, acid anhydrides.
InChIKey: WERYXYBDKMZEQL-UHFFFAOYSA-N
LogP: –0.88 at 25 °C
Surface tension: 45.33 mN/m at 298.15 K
The versatility of Addolink B extends to its use in both hot- and cold-curing cast systems, providing manufacturers with flexibility in processing conditions.
Its compatibility with various polyurethane formulations allows for its integration into diverse applications, ranging from coatings and adhesives to sealants and foams.
Addolink B is a standard chain extender for MDI-based systems.
Addolink B is 1,4-butane diol.
Acts as a crosslinking agent for the production of polyurethane elastomers (hot- and cold-curing cast systems) and of integral skin foams.
The reaction between Addolink B and isocyanates leads to the formation of the hard polyurethane segments.
The rapidity with which these hard segments are formed in the reaction mixture reduces the demolding time.
Addolink Bs use also affects the physical properties of the finished product.
Addolink B has a shelf life of 24 months.
Addolink B is hygroscopic and thus to be stored in a dry place.
When Addolink B is stored in rmly closed original containers at dry conditions at approx. 25 °C, a shelf-life of 30 months from manufacturing date can be expected
Addolink B is used as a chain extender or crosslinking component for polyester and polyether casting elastomers (hot and cold) and for integral skin foam.
The reaction between Addolink B and isocyanates leads to the formation of the hard polyurethane segments.
The rapidity with which these hard segments are formed in the reaction mixture reduces the demolding time.
The use of Addolink B also affects the physical properties of the finished product.
Addolink B increases the material's hardness and improves the resistance to abrasion and heat.
Addolink B is heat and light sensitive. 1,4-Butanediol reacts with acid chlorides, acid anhydrides and chloroformates; reacts with oxidizing agents and reducing agents. 1,4-Butanediol is incompatible with isocyanates and acids; also incompatible with peroxides, perchloric acid, sulfuric acid, hypochlorous acid, nitric acid, caustics, acetaldehyde, nitrogen peroxide and chlorine.
Addolink B is soluble in water, alcohols, esters, ketones, glycol ethers and glycol ether acetates (Butanediols, Butenediol, and Butynediol).
Addolink B enables the development of high-performance elastomers with properties such as increased tensile strength, elongation at break, and resistance to abrasion and impact, making it ideal for industrial applications where performance reliability is crucial, including in automotive bushings, wheels, gaskets, seals, mining components, and heavy-duty coatings.
Because of its balanced molecular structure and relatively low viscosity, Addolink B not only contributes to the formation of a uniform polymer network but also enhances the processability of the system, allowing for efficient mixing and smooth casting, even in conditions that require hot curing or precision molding.
Its utility extends beyond elastomers to applications in integral skin foams, rigid and semi-rigid foams, and even in adhesives, sealants, and coatings, where the need for controlled crosslinking and mechanical resilience is paired with specific performance goals such as chemical resistance, dimensional stability, and thermal endurance.
Uses Of Addolink B:
Addolink B and its derivatives is used in a broad spectrum of applications in the chemical industry; amongst others in the manufacturing of technical plastics, polyurethanes, solvents, electronic chemicals and elastic fibres.
Addolink B is used in the synthesis of epothilones, a new class of cancer drugs.
Also used in the stereoselective synthesis of (-)-Brevisamide.
Addolink B's largest use is within tetrahydrofuran (THF) production, used to make polytetramethylene ether glycol, which goes mainly into spandex fibers, urethane elastomers, and copolyester ethers.
It is commonly used as a solvent in the chemical industry to manufacture gamma-butyrolactone and elastic fibers like spandex.
It is used as a cross-linking agent for thermoplastic urethanes, polyester plasticizers, paints and coatings.
Addolink B undergoes dehydration in the presence of phosphoric acid yielded teterahydrofuran, which is an important solvent used for various applications.
It acts an intermediate and is used to manufacture polytetramethylene ether glycol (PTMEG), polybutylene terephthalate (PBT) and polyurethane (PU).
Addolink B finds application as an industrial cleaner and a glue remover.
Addolink B is also used as a plasticiser (e.g. in polyesters and cellulosics), as a carrier solvent in printing ink, a cleaning agent, an adhesive (in leather, plastics, polyester laminates and polyurethane footwear), in agricultural and veterinary chemicals and in coatings (in paints, varnishes and films).
Addolink B is a solvent with good antimicrobial action.
It enhances the preservative activity of parabens.
Addolink B also serves as a humectant and viscosity controller, and to mask odor.
Addolink B is used to produce polybutyleneterephthalate, a thermoplastic polyester;and in making tetrahydrofuran, butyrolactones,and polymeric plasticizers.
Addolink B is extensively utilized in the manufacturing of polyurethane elastomers, where it serves as a crucial chain extender that reacts with isocyanates to form strong urethane bonds, thereby enhancing the mechanical strength, flexibility, and durability of elastomeric products that are designed to withstand heavy mechanical stress and abrasion in demanding industrial environments.
One of the primary applications of Addolink B is found in the production of industrial wheels and rollers, where its ability to form hard segments within the polyurethane matrix results in materials that possess excellent load-bearing capacity and resistance to deformation, making these wheels suitable for use in material handling equipment, conveyor systems, and other heavy-duty machinery.
Addolink B is widely employed in the formulation of automotive components, including bushings, suspension parts, and seals, where its contribution to the polyurethane network imparts enhanced wear resistance and elasticity, ensuring that these parts maintain their structural integrity and performance under continuous dynamic loading and exposure to harsh environmental conditions.
In the realm of integral skin foams, Addolink B plays an essential role by facilitating the creation of products with a tough outer skin and a softer, cushioning core, which are highly valued in applications such as ergonomic seating, automotive interiors, and protective padding, where comfort and durability are equally important.
Moreover, this chemical finds applications in adhesives and sealants, where its reactive hydroxyl groups participate in crosslinking reactions that improve the adhesion strength, chemical resistance, and elasticity of bonding agents, making them effective in sealing joints and gaps in construction, electronics, and automotive assemblies.
Addolink B is also used in the production of coatings that require enhanced abrasion resistance, flexibility, and chemical durability, contributing to protective finishes on floors, machinery, and various metal or plastic surfaces that are exposed to wear, moisture, and chemical agents.
Its compatibility with both hot and cold curing systems makes Addolink B highly versatile, allowing manufacturers to tailor processing conditions and optimize production efficiency for diverse polyurethane formulations across different sectors, including footwear, sports equipment, and industrial insulation.
Furthermore, due to its balanced molecular weight and low viscosity, Addolink B facilitates easy handling and mixing during polyurethane synthesis, which not only improves manufacturing workflow but also ensures consistent quality and performance in the final products.
Safety Profile Of Addolink B:
Addolink B is a valuable chemical intermediate widely used in polyurethane manufacturing, it carries certain hazards that must be carefully managed to ensure safe handling and use, particularly in industrial environments where workers may be exposed to its physical and chemical properties over extended periods.
From a health perspective, Addolink B can act as a skin and eye irritant upon direct contact, causing redness, itching, or more severe dermatitis if exposure is prolonged or if protective measures such as gloves and goggles are not used consistently; repeated or chronic exposure to this diol may increase the risk of sensitization or allergic reactions, especially in individuals with pre-existing skin conditions or chemical sensitivities.
A human poison by an unspecified route moderately toxic byingestion and intraperitoneal routes human systemic effects: altered sleep time.
Combustible when exposed to heat or flame to fight fire, use alcohol foam, mist, foam, CO2, dry chemical.
Incompatible with oxidizing materials when heated to decomposition it emits acrid smoke and fumes.
The acute toxic effects are mild Addolink B less toxic than its unsaturate analogs,butenediol and the butynediol.
The oralLD50 value in white rats and guinea pigsis ~2 mL/kg.
The toxic symptoms fromingestion may include excitement, depressionof the central nervous system, nausea, anddrowsiness.
