First, The Physical Properties Of The Product
Chinese Name: Dimethyl Thiomethylenediamine, Curing Agent Chain Extenders DMTDA
English Name: Dimethyl Thio-Toluene Diamine
Appearance: Yellow To Amber Transparent Liquid At Room Temperature
Content: "99%
Water Content: ≤0.1%
Density: 1.206 (20 ° C)
Boiling Point: 200 ° C (1.68 MmHg)
Viscosity: 600-900 MPa · S (25 ° C)
Steam Pressure (MmHg) Maximum 0.01 (20 ℃)
Packing: Net Weight 200KG / Galvanized Iron Drum (A Small Cabinet Playing With 16 Tons), 1000KG / IB Bucket (A Small Cabinet 18 Tons) Or 23 Tons ISOTANK.

Second, Product Use And Product Advantages
A New Type Of Polyurethane Elastomer Curing Crosslinking Agent, In Which There Are Two Isomers, Namely, 2,4- And 2,6-Dimethyl Thiomethylenediamine Mixture (Ratio Of About 77 ~ 80/17 ~ 20 ), Compared With The Commonly Used MOCA, At Room Temperature Is A Low Viscosity Liquid, Can Be Applied To Low Temperature Construction Operation, The Advantages Of Low Chemical Use.
Dimethylthiotoluenediamine - Curing Agent Chain Extender DMTDA Is A New Type Of Polyurethane Elastomer Curing Crosslinking Agent, Equivalent To Ethancure 300 Which Has Two Main Isomers, Namely, 2,4- And 2,6- Methyl Sulfotoluene Diamine (The Ratio Is About 77 ~ 80/17 ~ 20), Compared With The Commonly Used MOCA, At Room Temperature Is A Low Viscosity Liquid, Can Be Applied To Low Temperature Operation, Low Chemical Equivalent Advantage. DMTDA Is An Environmentally Friendly Low-Toxic Liquid Diamine Chain Extender, Mainly Used For Polyurethane Elastomer, RIM (Reaction Injection Molding), SPUA (Spray Polyurea Elastomer) And Adhesive; Also Can Be Used As Epoxy Resin Curing Agent, Has Been Widely Used In Polyurethane Roller, Medicine, Stamping And Other Aspects, In Addition It In The Automotive, Metal, Textile, Paper, Printing Industry Has A Wide Range Of Applications.

Curing Agent Chain Extender DMTDA Curing Speed Than DETDA Much Slower, With detda In Different Proportions Mixed To Adjust The Curing Speed To Meet Different Needs.
1, Dimethylthiomethylenediamine-DMTDA Hindered Aromatic Diamine, Methylthio And Methyl Steric Hindrance To Its Activity Than TDA And DETDA Low, It Reacts With The Prepolymer Faster Than DETDA 5 -9 Times.
2, Dimethylthiomethylenediamine-Curing Agent Chain Extender DMTDA Activity Than MOCA High, Low NOC Content Of The Prepolymer In The Use Of Dimethyl Thioxytoluene Diamine - Curing Agent Chain Extension DMTDA Curing Casting Time Shorter Than MOCA, For Workers To Produce Operations, Improve Production Efficiency Is More Appropriate.
3, The Curing Temperature Can Be Reduced To Room Temperature (Preheating Temperature Can Be Adjusted In The Range Of 25 Degrees To 100 Degrees)
4, The Equivalent Low To 107 (MOCA 133.5), Curing The Same Amount Of Prepolymer Consumption Of Low Cost.
5, Synthetic PU (Polyurethane) Performance And Alkali Resistance Is Better Than MOCA Curing Products, Injection-Type Elastomer Better.
6, MOCA Curing When The High Temperature Will Be Volatile Carcinogenic Substances, And DMTDA At Room Temperature Will Not Use The Volatile Substances, Is Internationally Recognized Environment-Friendly Chain Extenders (Curing Agent).
7, Compared With The Traditional Curing Agent MOCA, Dimethyl Sulfotoluene Diamine-DMTDA Has Many Advantages: At Room Temperature Is Liquid, Easy To Use, Can Be Room Temperature Curing; Curing Agent Mechanical Properties And MOCA Comparable With Foreign Similar Products , Physical And Mechanical Properties Are Basically The Same, Lower Prices, Can Reduce The Cost Of Products, So This Product Is An Ideal Substitute For Traditional Curing Agent.

Dimethylthiomethylenediamine - Curing Agent Chain Extender DMTDA Processing Performance And Performance:
Dimethylthiotoluenediamine-DMTDA Is A Low Viscosity Liquid At Room Temperature And Has Good Flowability, So It Provides Flexibility For The Temperature Of The Blending Of The Prepolymer With The Curing Agent, And Accordingly It There Are The Following Advantages:
1, With Other Components Have A Good Compatibility;
2, When The Content Of NCO% In The Prepolymer Is Low, It Requires A Shorter Curing Time Than MOCA, Which Is Advantageous For The Operator.
3, In The Prepolymer NCO% Content For A Long Time, Due To Higher Reactivity, It Needs To Cure, A Long Time, Which Is Particularly Beneficial To The Operator.
4, The Equivalent Value Of DMTDA (107) Is Smaller Than MOCA (133.5) At The Same NCO% Content, So It Is Less Than MOCA.

Four, Diethyltoluene Diamine (DETDA) And Dimethyl Thiomethylenediamine (DMTDA) Two Products
Commonly Used Are Two Kinds Of Liquid Amine Chain Extender: Diethyltoluenediamine (Detda, Ethacurel00), Dimethyl Thiomethylenediamine (DMTDA, Ethacure 300). Liquid Amine Chain Extender DMTDA Reacts With The Prepolymer At A Faster Rate Than The Liquid Amine Chain Extender Detda, Which Is Used In Combination With Detda To Impart Good Surface Leveling Properties To The Elastomer And Has Little Effect On Mechanical Properties. However, Because Its Molecules Contain Methylthio (-SCH3), So Easy To Use In The Outdoor Discoloration, Yellowing, Can Not Be Used For High Color Retention Requirements Of The Occasion.

A Steric-Type Secondary Amine-Based Chain Extender Such As N, N'-Dialkylmethylenediamine Can Be Used. The Structural Formula Contains An Unstable H And One Alkyl, Alkyl In The Molecule Is Equivalent To The Internal Plasticizer. Compared With Other Aromatic Amine Chain Extender, N, N'-Dialkyl Methyl Diamine And Isocyanate Reaction Speed Is Slow, Can Get A Better Surface State. Mix With The Detda, Can Adjust The Gel Time, And Improve The Adhesion And Surface State.

Fifth, Export Essential Information
Chinese Name Dimethyl Thiomethylenediamine, Curing Agent Chain Extension DMTDA
English Name: Dimethyl Thio-Toluene Diamine
Appearance: Yellow To Amber Transparent Liquid At Room Temperature
Refund: 17%
UN: 3082
CAS No.:106264-79-3
Customs Code HS: 29309090.90
Several Types Of Dangerous Goods: 9 Categories Of Dangerous Goods Exports
Dimethylthiomethylenediamine DMTDA Raw Materials: Toluene Diamine (TDA) And Dimethyldisulfide (DMDS)
Packing: Net Weight 200KG / Galvanized Iron Drum (A Small Cabinet Playing With 16 Tons), 1000KG / IB Bucket (A Small Cabinet 18 Tons) Or 23 Tons ISOTANK.