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 登录号：72244-98-5;101359-87-9
化学名称： 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：
| 检验项目 (Item) | 指标要求 (Specification) |
| 外观 (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.
| 检验项目 (Item) | 指标要求 (Specification) |
| Property | Condition Result |
| Gel Time | –5°C 3 min 20 s |
| 27°C, 70% RH 2 min 40 s | |
| Hardness (Shore D), 24h | –5°C 75 |
| 27°C, 70% RH 84 | |
| Lap Shear Strength (MPa), 24h | –5°C 9 |
| 27°C, 70% RH 19 |
25kg/drum or 220 kg/drum
存放在干燥、阴凉、通风良好的库房内。
避免受光照和高温加热。
运输过程中做好防漏、防雨与防暴晒保护。
| 检验项目 (Item) | 指标要求 (Specification) |
| 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;101359-87-9 |
| 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 indexoptical monomer |
| ▶Sinomer® OM258 | 97049-32-0 |
| 2-Naphthalenylthioethyl acrylate;2-Propenoic acid 2-(2-naphthalenylthio)ethyl ester;NTEA | high refractive indexoptical 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 |
