SINOMER® 4-HBA - Hydroxy-Functional Acrylate Monomer for Flexible UV Coatings

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Sinomer® 4-HBA

4-Hydroxybutyl acrylate, CAS 2478-10-6, hydroxyl functional acrylate, water-soluble UV monomer

Sinomer® 4-HBA is a high-crosslinking, monofunctional acrylate monomer. It contains both a double bond and a hydroxyl group within a long acrylic chain, giving it dual functionality. This monomer is characterized by its fast cure speed, low odor, low skin irritation, and excellent weatherability. Its homopolymer has a very low glass transition temperature (Tg) of -65°C, which imparts exceptional flexibility, scratch resistance, and acid rain resistance to cured coatings and films. It is also water-soluble, making it suitable for waterborne UV systems.

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SINOMER® 4-HBA

(High-crosslinking, monofunctional acrylate monomer)

Chemical Name: 4-Hydroxybutyl acrylate

CAS No.: 2478-10-6

MF:C7H12O3   MW：144.17

Molecular structure：

General information :

Sinomer® 4-HBA is a high-crosslinking, monofunctional acrylate monomer. It contains both a double bond and a hydroxyl group within a long acrylic chain, giving it dual functionality. This monomer is characterized by its fast cure speed, low odor, low skin irritation, and excellent weatherability. Its homopolymer has a very low glass transition temperature (Tg) of -65°C, which imparts exceptional flexibility, scratch resistance, and acid rain resistance to cured coatings and films. It is also water-soluble, making it suitable for waterborne UV systems.

Standard :

Appearance

Clear Liquid

Color (APHA)

≤ 20

Acid Value

≤ 1.0 mg KOH/g

Viscosity @ 25°C

6 - 12 cps

Water Content

≤ 0.2 %

Refractive Index

1.452

Surface Tension @ 20°C

28.9 Dynes/cm

Glass Transition Temperature (Tg)

-65 °C


Features :

  • Dual Functional Groups: Contains a polymerizable double bond and a reactive hydroxyl group in a single molecule.

  • Excellent Flexibility: Very low homopolymer Tg (-65°C) significantly enhances the flexibility of cured polymers.

  • Fast Cure Speed & High Reactivity: The free hydroxyl group improves low-temperature curability.

  • Enhanced Material Properties: Improves scratch resistance, adhesion, and resistance to acid rain.

  • Low Irritation & Odor: Safer and more pleasant for handling and use in various applications.

  • Water Solubility: Can be used as a reactive diluent in waterborne UV coatings.

  • Good Weatherability: Provides long-term durability against environmental factors.


Applications :

  • Synthetic Chemical Intermediates

  • Synthetic Resins

  • Wood Coatings

  • Plastic Coatings

  • Clear Overcoat Varnishes

  • UV-curable Adhesives (improves adhesion strength and durability)

  • Waterborne UV Coatings

Packaging :

● 25kg,200kgs/drum.


Storage :

Being kept in dry, clean warehouse with well ventilation.

Avoid exposing to light and heating.

Protecting the product from leakage, rain and insolation during transportation.

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Related product recommendations

Sinomer® 2-HBA

4-Hydroxybutyl acrylate, CAS 2478-10-6, hydroxyl functional acrylate, water-soluble UV monomer

SINOMER® 2-HBA (2-Hydroxybutyl acrylate,CAS 2421-27-4) is 2-Hydroxybutyl acrylate, a monofunctional acrylate monomer manufactured for resin synthesis and coatings. It provides enhanced flexibility and adhesion as a reactive diluent in solvent-based and water-based formulations.

  • Chemical name :

    2-Hydroxybutyl acrylate

  • CAS No. :

    2421-27-4

  • MF :

    C7H12O3

  • Package :

    25kg,200kgs/drum.

Sinomer® HDA

Hexadecyl acrylate, CAS 13402-02-3, long-chain acrylate, crude oil pour-point depressant

SINOMER®HDA is a monofunctional long-chain alkyl acrylate monomer with high reactivity, hydrophobicity, adhesion, low shrinkage, chemical resistance, impact resistance, flexibility, and weather resistance.

  • Chemical name :

    Hexadecyl acrylate

  • CAS No. :

    13402-02-3 

  • MF :

    C19H36O2

  • Package :

    25kg,200kgs/drum.

SINOMER® DMAEMA

Dimethylaminoethyl methacrylate, CAS 2867-47-2, DMAEMA monomer, water-soluble acrylate

SINOMER® DMAEMA (CAS 2867-47-2) is Dimethylaminoethyl methacrylate, a versatile water-soluble monomer manufactured for coatings, adhesives, and water treatment. It serves as a key raw material for dispersants and demulsifiers.

  • Chemical name: :

    Dimethylaminoethyl methacrylate

  • CAS No. :

    2867-47-2

  • Molecular Formula:

    C8H15NO2

  • Package :

    190Kgs /drum,IBC Drum.

Sinomer® EO6-DPA

long-chain alkylphenol acrylate

Sinomer®EO6-DPA(DP(EO)6A) is a long-chain alkylphenol acrylate offering excellent flexibility and low shrinkage.can replace NP(EO)4A/NP4EA.

  • Chemical name: :

    Ethoxylated Dodecyl Phenol Acrylate

  • CAS No. :

    n/a

  • MW:

    580

  • Package :

    25,200kgs/drum

Sinomer® BZA

High-refractive-index, low-viscosity benzyl monomer

Sinomer®BZA is a monofunctional aromatic acrylate monomer characterized by its low viscosity and high refractive index

  • Chemical name: :

    Benzyl Acrylate

  • CAS No. :

    2495-35-4

  • MW:

    162.18

  • Package :

    25,200kgs/drum

Sinomer® DCP-220

Saturated tricyclic structure Monomer

Sinomer®DCP-220 features a unique saturated tricyclic structure with low odor, low curing shrinkage, fast deep-layer curing, high refractive index, and good abrasion resistance. 

  • Chemical name: :

    Tricyclodecane Monomethanol Acrylate

  • CAS No. :

    93962-84-6

  • MW:

    220

  • Package :

    25,200kgs/drum

Sinomer® EO-THFA

Ethoxylated modified TFHA monomer

Sinomer®EO-THFA is a modified tetrahydrofurfuryl acrylate with significantly reduced irritation and odor, while maintaining low viscosity. It is suitable for various radiation curing applications.


  • Chemical name: :

    Ethoxylated Tetrahydrofurfuryl Acrylate

  • CAS No. :

    79252-75-8

  • MW:

    201

  • Package :

    25,200kgs/drum

Sinomer® CHMA

Methacrylate Monomer

Sinomer® CHMA is mainly used in industries such as coatings, plastics, textiles, leather, and papermaking, used as a monomer or copolymer for solution polymerization or suspension polymerization. 

  • Chemical name: :

    Cyclohexyl methacrylate

  • CAS No. :

    101-43-9

  • MF :

    C10H16O2

  • Package :

    190kgs/drum; 900kgs/IBC drum

Sinomer® GMA

Epoxy-Functional (Meth)Acrylate Monomer

SINOMER® GMA not only participates in free radical polymerization, but the epoxy group can also provide additional reactive sites for enhancing adhesion, improving resistance, or performing post-functional modification of polymers.

  • Chemical name: :

    Glycidyl methacrylate

  • CAS No. :

    106-91-2

  • MF :

    C7H10O3

  • Package :

    25,200 kg/ drum

Sinomer® DCPA

Characteristic Monomer, Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® DCPA is a low-viscosity diluent monomer that can be used in UV curing systems.

  • Chemical Name :

    Dihydrodicyclopentadienyl Acrylate

  • CAS No. :

    12542-30-2

  • Package :

    25 or 200 kg/ drum

  • Viscosity (25℃) , mPas :

    8-18

  • APHA Color :

    ≤50

Sinomer® DCPMA

Characteristic Monomer, Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® DCPMA is a low-viscosity diluent monomer that can be used in UV curing systems.

  • Chemical Name :

    Dihydrodicyclopentadienyl methacrylate

  • CAS No. :

    30798-39-1

  • Package :

    25 or 200 kg/ drum

  • Viscosity (25℃) , mPas :

    6-15

  • APHA Color :

    ≤50

Sinomer® AAEMA

Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® AAEMA is a methacrylic acid monomer used in the synthesis of high solids liquid acrylic resins and low VOC acrylic emulsions for industrial and architectural coatings.

  • Chemical name :

    Acetoacetoxyethyl Methacrylate

  • CAS No. :

    21282-97-3

  • MF :

    C10H14O5

  • Package :

    25kg/200KG Drum

  • Assay :

    95%

Sinomer® AMA

Monofunctional Monomer, Sinomer® Functional monomers

SINOMER®AMA is an important crosslinking agent that can provide effective bifunctional crosslinking in the second stage,with good drug resistance, 

  • Chemical name :

    Allyl methacrylate

  • CAS No. :

    96-05-9

  • MF :

    C7H10O2

  • Package :

    180KG /drum

  • Refractive index ,20ND :

    1.437

  • APHA Color :

    ≤50

Sinomer® BACEA

Characteristic Monomer, Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® BACEA is a monofunctional polyurethane acrylate that can be used as a reactive diluent for UV coatings, inks and adhesives. 

  • Chemical name:

    2-[[butylamino)carbonyl]oxy]ethyl acrylate

  • CAS No. :

    63225-53-6

  • MF :

    C10H17NO4

  • Package :

    25,200 kg/ drum

Sinomer® BCEA

Monofunctional Monomer, Sinomer® Functional monomers

SINOMER® BCEA is easy to copolymerize with ethylene and acrylic monomers in emulsion polymerization and radiation curing systems.

  • Chemical name :

    2-carboxyethyl acrylate;Beta-carboxyethyl acrylate

  • CAS No. :

    24615-84-7

  • MF :

    C6H8O4

  • Package :

    25,200 kg/ drum

Sinomer® DCPEA

Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® DCPEA is a low-viscosity diluent monomer that can be used in UV curing systems; 

  • Chemical name:

    Dicyclopentenyloxyethyl Acrylate

  • CAS No. :

    65983-31-5

  • MF :

    C15H20O3

  • Package :

    25kg/bl, 200kg/bl

Sinomer® DCPEMA

Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® DCPEMA is a low-viscosity diluent monomer that can be used in UV curing systems; 

  • Chemical Name :

    Dicyclopentenyloxyethyl Methacrylate

  • CAS No. :

    68586-19-6

  • Package :

    25 or 200 kg/ drum

  • Viscosity (25℃) , mPas :

    14-20

  • APHA Color :

    ≤100

Sinomer® EMDOA

Characteristic Monomer, Monofunctional Monomer, Sinomer® Functional monomers

SINOMER® EMDOA is an acrylic monomer containing a dioxolane structure, 

  • Chemical name :

    (2-Ethyl-2-methyl-1,3-dioxylate)Acrylate

  • CAS No. :

    69701-99-1

  • MF :

    C10H16O4

  • Package :

    25,200 kg/ drum

Sinomer® EOEOEA

Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® EOEOEA is an acrylate monomer suitable for photocuring reactions, 


  • Chemical name :

    Carbitol acrylate; Ethoxyethoxyethyl acrylate; 2-(2-Ethoxyethoxy)ethyl acrylate

  • CAS No. :

    7328-17-8

  • MF :

    C9H16O4

  • Package :

    25 or 200 kg/ drum

  • Assay :

    98%min

Sinomer® HDCPA

Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® HDCPA is Hydrogenated dicyclopentenyl acrylate,which is a low-viscosity diluent monomer that can be used in UV curing systems.

  • Chemical Name :

    Hydrogenated dicyclopentenyl acrylate

  • CAS No. :

    79637-74-4

  • Package :

    25 or 200 kg/ drum

  • Viscosity (25℃) , mPas :

    7-17

  • APHA Color :

    ≤50

Sinomer® HEMA

Monofunctional Monomer, Sinomer® Functional monomers

SINOMER® HEMA is mainly used for the modification of resins and coatings. It can be copolymerized with other acrylic monomers to obtain acrylic resins with active hydroxyl groups in the side chains, 

  • Chemical name:

    2-hydroxyethyl methacrylate

  • CAS No. :

    868-77-9

  • MF :

    C6H10O3

  • Package :

    25 or 200 kg/ drum;IBC Tank

  • Assay :

    95%,96%,97%,98%

Sinomer® HEMAS

Characteristic Monomer, Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® HEMAS is the succinate of HEMA, with the  curing characteristics of low odor, good adhesion to metal materials (especially copper), and double bond & carboxyl dual.It combines the reactivity of succinic acid with the adhesive properties of HEMA.

  • Chemical name :

    2-[(2-methyl-1-oxoallyl)oxy]ethyl] hydrogen succinate

  • CAS No. :

    20882-04-6

  • MF :

    C10H14O6

  • Package :

    25,200 kg/ drum

Sinomer® HPMA

Monofunctional Monomer, Sinomer® Functional monomers

SINOMER®HPMA is widely used in the production of polyhydroxyacrylic acid for automotive coatings and refinish coatings as well as for industrial coatings.


  • Chemical name :

    2-Hydroxypropyl methacrylate

  • CAS No. :

    27813-02-1

  • MF :

    C7H12O3

  • Package :

    25 or 200 kg/ drum;IBC Tank

  • Assay :

    95.5%,96%,97%,98%

Sinomer® IBOA

Bio-based monomer,Monofunctional Monomer, isobornyl acrylate

Sinomer® IBOA/IBXA is a Bio-based monomer with relatively high reactivity, weather resistance,

  • Chemical name :

    Isobornyl acrylate

  • CAS No. :

    5888-33-5

  • MF :

    C13H20O2

  • Package :

    25 or 200 kg/ drum

  • Assay :

    98%min

Sinomer® IBOMA

Bio-based monomer,Monofunctional Monomer

Sinomer® IBOMA is suitable for manufacturing high Tg thermoplastic acrylic resin.

  • Chemical name :

    Isobornyl methacrylate

  • CAS No. :

    7534-94-3

  • MF :

    C14H22O2

  • Package :

    25 or 200 kg/ drum

  • Assay :

    99%min

Sinomer® IDA

Monofunctional Monomer, Sinomer® Functional monomers

SINOMER®IDA is mono-functional and hydrophobic in nature.

  • Chemical name :

    Isodecyl acrylate

  • CAS No. :

    1330-61-6

  • MF :

    C13H24O2

  • Package :

    200kgs/drum

  • Assay :

    98% min

Sinomer® IPGA

Characteristic Monomer, Monofunctional Monomer, Sinomer® Functional monomers

SINOCURE® IPGA (Isopropylideneglycerol Acrylate) – Low viscosity , high-reactivity UV-curable monomer for 3D printing, flexible electronics & adhesives.

  • Chemical name:

    Isopropylideneglycerol acrylate

  • CAS No. :

    13188-82-4

  • Viscosity , cps@25℃ :

    1~10

  • Package :

    20kg,200kgs/drum.

Sinomer® LA

Bio-Based Monomer,Monofunctional Monomer

SINOMER®LA is an Bio-Based acrylate monomer suitable for photocuring reactions,with good flexibility, 

  • Chemical name:

    Lauryl acrylate / Dodecyl acrylate

  • CAS No. :

    2156-97-0

  • MF :

    C15H28O2

  • Package :

    200kgs/drum

  • Assay :

    98% min

Sinomer® LMA

Bis-based Monomer, Monofunctional Monomer

Sinomer® LMA has the lowest among alkyl methacrylates (-35°C) in homopolymer embrittlement point is ,

  • Chemical name:

    Lauryl methacrylate / Dodecyl 2-methylacrylate

  • CAS No. :

    142-90-5

  • MF :

    C16H30O2

  • Package :

    25 or 200 kg/ drum

  • Assay :

    98%min

Sinomer® NP-4EA

Monofunctional Monomer, Sinomer® Functional monomers

SINOMER®NP-4EA is an acrylate monomer suitable for photocuring reactions,with Good flexibility, 

  • Chemical name:

    (4) ethoxylated nonylphenol acrylate

  • CAS No. :

    50974-47-5

  • MF :

    (C2H4O)nC18H26O2

  • Package :

    200kgs/drum

  • Assay :

    98% min

Sinomer® OOXEA

Characteristic Monomer, Monofunctional Monomer, Sinomer® Functional monomers

Sinomer® OOXEA is a hydrophilic monomer with low viscosity, low irritation, strong adhesion to metal, good flexibility and fast curing speed.Can replace Acticryl CL 959.

  • Chemical name :

    2-(2-Oxo-3-oxazolidinyl)ethyl acrylate

  • CAS No. :

    115965-75-8

  • MF :

    C8H11NO4

  • Package :

    25,200 kg/ drum

Sinomer® OPPEA

Optical Monomer,High refractive index acrylate monomer,Monofunctional Monomer

Sinomer® OPPEA is a monofunctional UV monomer with high refractive index, 

  • Chemical name :

    Ortho-phenyl Phenoxy Ethyl Acrylate;2-Phenylphenoxyethyl acrylate

  • CAS No. :

    72009-86-0/ 91442-24-9

  • MF :

    C17H16O3

  • Package :

    25,200 kg/ drum

Sinomer® PBA-254

Characteristic Monomer, Monofunctional Monomer, Sinomer® Functional monomers

SINOMER® PBA-254 is a phenoxy acrylate optical monomer with low viscosity, good dilution, excellent wetting properties and high refractive index.

  • Chemical name:

    3-phenoxybenzyl acrylate

  • CAS No. :

    409325-06-0

  • MF :

    C16H14O3

  • Package :

    25,200 kg/ drum

Sinomer® PHEA

2-phenoxyethyl acrylate, 48145-04-6, phenoxy ethyl acrylate, plastic coating monomer

SINOMER® PHEA is a low volatile monofunctional, aromatic monomer with good adhesion performance. It can be widely used in electronic photoresist, adhesives, inks, and coatings.

  • Chemical name:

    2-phenoxyethyl acrylate

  • CAS No. :

    48145-04-6

  • MF :

    C11H12O3

  • Package :

    25 or 200 kg/ drum

  • Assay :

    98%min

Sinomer® PHEMA

2-phenoxyethyl methacrylate, conformal coating resin, electronic encapsulant monomer

Sinomer® PHEMA is a monofunctional methacrylate with good adhesion,low viscosity,Good flexibility.

  • Chemical name:

    2-Phenoxyethyl methacrylate

  • CAS No. :

    10595-06-9

  • Viscosity , cps@25℃ :

    5~15

  • Package :

    25kg,200kgs/drum.

Sinomer® PM2118

phosphate acrylic monomer, HEMA alternative, adhesion promoter monomer

SINOMER®PM2118 is a phosphate Acrylic Monomer with the advantages of low viscosity, 

  • Chemical name:

    Phosphate Acrylic Monomer

  • CAS No. :

    n/a

  • MF :

    n/a

  • Package :

    20,200 kg/ drum

Sinomer® SA

stearyl acrylate, octadecyl acrylate, bio-based hydrophobic monomer, associative thickener

Sinomer® SA is a bio-based monomer with low shrinkage and volatility, flexibility, excellent weather resistance and water resistance. It can be widely used in inks, release coatings, coatings and textile coatings.

  • Chemical name:

    Stearyl Acrylate;Octadecyl acrylate

  • CAS No. :

    4813-57-4

  • MF :

    4813-57-4

  • Package :

    10kg,100kg,150kgs/drum.

Sinomer® SMA

stearyl methacrylate, octadecyl methacrylate, bio-based monomer, sustainable coating resin

Sinomer® SMA is a monomer with low shrinkage and volatility, flexibility, excellent weather resistance and water resistance. It can be widely used in inks, release coatings, textile.

  • Chemical name :

    Stearyl methacrylate;Octadecyl methacrylate

  • CAS No. :

    32360-05-7

  • MF :

    C22H42O2

  • Package :

    25kg,200kgs/drum.

Sinomer® TBCHA

4-tert-butylcyclohexyl acrylate, 84100-23-2, low odor acrylate, impact resistant coating

SINOMER® TBCHA is a photocurable diluent with low odor, low skin irritation, high safety, good dilution ability,

  • Chemical name:

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  • CAS No. :

    84100-23-2

  • MF :

    C13H22O2

  • Package :

    20,200 kg/ drum

Sinomer® THFA

tetrahydrofurfuryl acrylate, THFA monomer, low viscosity acrylate, printing ink resin

SINOMER®THFA has good diluting properties, strong diluting resin, and excellent chemical resistance and weather resistance among monofunctional monomers. 

  • Chemical name :

    Tetrahydrofurfuryl acrylate

  • CAS No. :

    2399-48-6

  • MF :

    C8H12O3

  • Package :

    200kgs/drum

  • Assay :

    98% min

Sinomer® THFMA

tetrahydrofurfuryl methacrylate, THFMA monomer, gravure printing ink resin

Sinomer® THFMA is a low-viscosity monofunctional monomer containing a cyclic polar group and has good adhesion to many substrates. 

  • Chemical name :

    Tetrahydrofurfuryl methacrylate

  • CAS No. :

    2455-24-5

  • MF :

    C9H14O3

  • Package :

    25 or 200 kg/ drum

  • Assay :

    99%min

Sinomer® TMCHA

3,3,5-trimethylcyclohexyl acrylate, Sartomer SR420 alternative, low odor acrylate monomer

SINOMER® TMCHA is a monofunctional acrylate with low odor and low shrinkage properties.Can full replace sartomer SR420 NS,ETERMER 2104,Miramer M1130.

  • Chemical name :

    3,3,5-trimethylcyclohexyl acrylate

  • CAS No. :

    86178-38-3

  • MF :

    C12H20O2

  • Package :

    20,200 kg/ drum

Sinomer® NBMA

N-butyl methacrylate, methacrylate monomer, safety glass interlayer resin

SINOMER® NBMA can be used as a comonomer for modified organic glass. 

  • Chemical Name :

    N-Butyl methacrylate

  • CAS No. :

    97-88-1

  • Package :

    25 or 180 kg/ drum

  • APHA Color :

    ≤50

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