SINOMER®PM839 is a transparent liquid polymer curing agent with thiol (-SH) termination. Excellent properties when combined with amines or polyamines to cure epoxy resins. Provides fast cure rates at low temperatures and in thin films.
SINOMER® PM839
(Polymercaptan low temperature epoxy curing agent)
CAS No.: 72244-98-5
Chemical Name: Poly[oxy(methyl-1,2-ethanediyl)],.alpha.-hydro-.omega.-hydroxy-, ether with 2,2-bis(hydroxymethyl)-1,3-propanediol (4:1), 2-hydroxy-3-mercaptopropyl ether
Synonyms: Capcure 3-800;GABEPRO GPM-800;Polythiol QE-340M;Thiocure 1200;Polythiol;Polymercaptan
Molecular structure：
Appearance | Colorless transparent liquid. |
Mercapto equivalent weight,meq/g | ≥3.0 |
Platinum-cobalt scale,Hazen | ≤20 |
Viscosity at 25℃,mPa.s | 12000-14000 |
Total chlorine content,ppm | ≤800 |
pH Value ,1% Water solution | 5.00-7.00 |
Volatile matter,%(m/m) | ≤1.2 |
High viscosity, low chrominance, and low odor
Good transparency after curing
Epoxy resin low-temperature rapid curing agent
PV silicon wafer processing
Bonding agent for jewelry and craftwork
Electronic adhesives
Anticorrosive coating
Can be combined with Sinepoxy® BER-128 (thiol curing agent) and Sinepoxy®DMP-30 (accelerator) to form a low-temperature fast epoxy curing system.
| Product Name | Cas No. | Chemical Name | Synonyms/Application |
| ▶Sinomer® PETMP | 7575-23-7 | Penta-erythritol tetrakis(3-mercaptopropionate) | THIOCURE PETMP; PET-3-MP;Tetra (3-mercaptopropionate) |
| ▶Sinomer® BMES | 3570-55-6 | Bis(2-mercaptoethyl) sulfide; Dimercapto diethyl sulfide; 2,2′-Thiodiethanethiol; | THIOCURE DMDS; Polythiol DMDS |
| ▶Sinomer® BMPT | 131538-00-6 | 2,3-bis((2-mercaptoethyl)thio)-1-propanethiol | THIOCURE DMPT; Polythiol DMPT |
| ▶Sinomer® PM839 | 72244-98-5 | Poly[oxy(methyl-1,2-ethanediyl)],.alpha.-hydro-.omega.-hydroxy-, ether with 2,2-bis(hydroxymethyl)-1,3-propanediol (4:1), 2-hydroxy-3-mercaptopropyl ether | Epoxy curing agent,Capcure 3-800; GABEPRO GPM-800; Polythiol QE-340M; Thiocure 1200 |
| ▶Sinomer® TMPMP | 33007-83-9 | Trimethylolpropane Tris(3-mercaptopropionate) | / |
| ▶Sinomer®OM835 | 188829-97-2 | Bis(thiiran-2-ylmethyl)sulfane;1,1′-Thiobis(2,3-epithiopropane);Bis(2,3-ethylpropyl) sulfide | high refractive index optical monomer |
| ▶Sinomer® OM265 | 39667-72-6 | 2-Propenoic acid, 2-(2-benzothiazolylthio)ethyl ester;(2-(2-benzothiazolylthio)ethyl)acrylate;MBTA | high refractive index optical monomer |
| ▶Sinomer® OM258 | 97049-32-0 | 2-Naphthalenylthioethyl acrylate;2-Propenoic acid 2-(2-naphthalenylthio)ethyl ester;NTEA | high refractive index optical monomer |
| ▶Sinomer® OM386 | 129283-82-5 | Bis(4-Methacryloylthiophenyl) Sulfide;4,4'-Thiodibenzenedithiol Dimethacrylate | high refractive index optical monomer |
| ▶Sinomer® PETMA | 10193-99-4 | Penta-erythritol tetrakis(2-mercaptoacetate) | coupling agent |
| ▶Sinomer® EGDMP | 22504-50-3 | Ethylene Glycol Bis(3-Mercaptopropionate) | cross-linking agent,curing agent |
| ▶Sinomer® GDMA | 123-81-9 | Glycoldimercaptoacetete;Ethylene di(S-thioacetate) | PVC heat stabilizer |
| ▶Sinomer® EHMP | 50448-95-8 | 2-Ethylhexyl 3-Mercaptopropionate | Sulfur-tin stabilizer |
| ▶Sinomer® GMT80 | 30618-84-9 | Glyceryl monothioglycolate | daily chemical |
25kg/drum or 220 kg/drum
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.
Ofrecemos una variedad de opciones para ayudarle a encontrar el producto adecuado para su aplicación.
Provide formulation optimization support for water-based/solvent-based systems
Full coverage of REACH, FDA, and GB standards
99.8% on-time delivery rate, 10,000-ton production capacity guarantee
