Home / Products / Polyetheramine & DETDA Series
  • Unilink 4200

Unilink 4200

While The Alkyl Group Increases The Solubility Of The Diamine So That It Can Be Mixed With Almost Any Polyol And Polyamine.

MDBA Is A Trade Name For 4,4'-Bis-Sec-Butylaminodiphenylmethane, Also Known As Unilink 4200, Which Is A Liquid Secondary Diamine, Since The Hydrogen Atom On Each Amino Group Is Replaced By A Sec-Butyl Group The Combination Of Active Hydrogen Atoms And Sec-Butyl Groups In A Limited Space Produces Many Unique Properties, With The Amino Moiety Forming The Urea Bonds That Affect The Hard Segments, While The Butyl Groups Act As Internal Plasticizers. It Is Connected With The Polymer Matrix, Neither Leaching Nor Precipitation. While The Alkyl Group Increases The Solubility Of The Diamine So That It Can Be Mixed With Almost Any Polyol And Polyamine.


★ Advantages of Unilink 4200:

Liquid, Safe And Easy To Operate
Kettle Long Life
Low Toxicity - Ames Test Was Negative
Increased Mobility And Adhesion
Low Humidity Sensitivity
Can Be Used For The Maturation Of MDI Prepolymer
Compatible With A Variety Of Polyol Coacervatives And Other Polyurethane Chemical Materials
Can Be Used For Room Temperature Curing
Hard Foam: Enhanced Compressive Strength Dimensional Stability, Reduced Fragility, High Porosity, Low Thermal Conductivity
TDI Soft Foam: Low Density, High Strength, High Loadability
MDI Soft Foam: Low Density, Low Hardness, Enhanced Strength

Unilink 4200 Use

4, 4'-Sec-Butylaminodiphenylmethane-MDBA, Unilink4200 Can Be Used In Rigid Foam, Soft Foam, Paint, Adhesive, Sealant, Elastomer, The Typical Use Of 1-5% Of The Polyol. 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA Can Also Be Used To Spray Polyurea, And A Variety Of Compounds For Metal And Concrete Repair.

Soft Foam
Bulk Foam - In The Standard TDI And High Rebound Foam Composition, Adding 3-5php Of 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA, Unilink4200 Can Improve The Tensile Strength Of The Foam, Tear Strength And The Bearing Properties, In Most Cases These Advantages Can Be Achieved By Reducing The Foam Density In A Polyester Foam, The Same Proportion Of 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA Can Significantly Improve Tear Strength And Loadability Without Affecting The Other Properties Of The Foam.
Cold Molded Foam - It Has Been Demonstrated In Commercial Applications That Adding 1-2php Of 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA Can Reduce The Density And Soften The Foam, Thereby Optimizing The Foam Properties. But Also Can Enhance The Tensile Strength, Tear Strength And Elongation, Shorten The Release Time.

Hard Foam

Polyurethane Foam - 3-5php Of 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA In A Water Or Anhydrous Hard Foam System Significantly Increases The Compressive Strength And Dimensional Stability Of The Foam While Reducing Ease Brittleness, Increase The Porosity, Reduce The Thermal Conductivity.
Polyisocyanurate Hard Foam - Adding 5 Phr Of 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA In The System Can Increase The Compressive Strength By 100% In High Proportion Of Water Foaming Or Full Water Foaming , The Dimensional Stability Was Significantly Improved.
Coating / Adhesive / Sealant / Elastomer
Coating - - 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA Can Be Used For Room Temperature Curing Of TDI And MDI Coatings, And A Suitable Catalyst Masterbatch Can Be Used To Produce A Composite System For Spraying And Casting. The Formulation Of 4,4'-Di-Sec-Butylaminodiphenylmethane-MDBA As A Curing Agent Improves The Adhesion And Surface Quality.
Adhesive - 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA Allows The Substrate To Be Better Wetted And The Cured Polymer Is Better Adhered To The Coated Surface. The Hard Elastomer - 4,4'-Bis-Sec-Aminodiphenylmethane-MDBA Can Be Used For The Maturation Of MDI Semi-Prepolymers To Produce A Series Of Elastomers With High Hardness.
Soft Elastomers - Using 4,4'-Bis-Sec-Butylaminodiphenylmethane-MDBA, Unilink4200 As A Curing Agent Can Extend The Life Of The Kettle To Produce Soft Elastomers Used As Industrial Sealants.

★ Polyurea

Reducing The Rate Of Gel Reaction, Making It Possible To Produce Such High Hardness Polymers By Spray Casting Techniques. The Extended Gel Speed Can Improve The Adhesion With The Base Layer, The Mobility, The Bonding Between The Coating And The Surface Quality. The Use Of 4,4'-Bis-Sec-Aminodiphenylmethane-MDBA As A Curing Agent Can Significantly Improve The Low Impact Properties Of Polymer Impact Resistance.

★ Unilink 4200 Packing Specifications

18 Kg Tinplate
200 Kg Iron Drum
Storage (Use) Precautions
Store In A Well-Defined Sealed Container, Placed In A Cool Place, Away From Fire.
Avoid Eye Contact, Avoid Prolonged Skin Contact Or Inhalation Of Steam. Do Not Ingest. It Is Strictly Prohibited Near The Storage Container
Use Welding, Cutting Equipment, So As Not To Cause Steam Deflagration.

★ Unilink 4200 Safety Precautions

Toxicity, LD 5 0 (Oral, Mouse) 1,380 Mg / Kg
(Check Carcinogens) Ames Test: Negative
This Product Does Not Belong To The International Maritime Organization Dangerous Goods (IMDG)
Export Essential Information
Chinese Name: 4,4'-Bis-Sec-Butylaminodiphenyl Methane (MDBA), Unilink4200
English Name: 4,4'-Methylenebis [N-Sec-Butylaniline] (MDBA)
Appearance: Dark Amber, 4,4'-Bis-Sec-Butylaminodiphenyl Methane-MDBA Can Be Used In Rigid Foam, Soft Foam, Paint, Adhesives, Sealants, Elastomers, The Typical Use Of Polyols Of 1-5% .4,4'-Di-Sec-Butylaminodiphenylmethane-MDBA Is Used In The Spraying Of Polyurea, And A Variety Of Compounds For Metal And Concrete Repair.
Cas Number: 5285-60-9
Belong To Several Types Of Dangerous Goods: General Cargo Exports.
Tax Rebate: Current 4,4'-Bis-Sec-Butylaminodiphenylmethane (MDBA), Unilink4200 Tax Rebate Of 13%.
Packing: Net Weight 200KG / Galvanized Iron Drum (A Small Counter To Play With 16 Tons), 1000KG / IB Barrel (A Small Cabinet Installed 18 Tons) Or 23 Tons ISOTANK.



Unilink 4200
Related Products
Polyetheramine HF-D230 Polyetheramine HF-D230
PEA-Polyetheramine Series PEA-Polyetheramine Series
+86 156 3251 6851 +86 150 7632 3255 15033233665 gilbert@houfa-polyurethane.com  james@houfa-newmaterials.com 313011414 1144651831