Brief Overview Of Methyl Tin Mercaptide PVC Stabilizer:
Methyl tin mercaptide stabilizer is a key stabilizer in the polyvinyl chloride (PVC) heating process. It has better pre and post-stability, product transparency, good compatibility with other additives and raw materials, and excellent weatherability than other metal heat stabilizers.
It is widely used in the processing of PVC sheets, profiles, pipes and fittings,and other blow molding,injection molding PVC products, methyl tin mercaptide also can be used in food packaging and medical packaging and non-toxic and non-hazardous PVC products.
The tin content in methyl tin stabilizer equals the quality of methyl tin mercaptide, the higher the tin content, the better the stability performance of the methyltin stabilizer. 19% tin content stabilizer is also the most popular type of methyl tin used.
PVC Products produced with methly tin mercaptide are high-quality, color reliable and performance excellent.Under the same production environment and formula, the additive amount of methyl tin is 15-20% less than similar organic tin stabilizers.So the methyl tin mercaptide’s production performance are better than other metal stabilizers.
Advantages Of Methyl Tin Mercaptide:
1.Excellent heat stability.
Excellent high temperature color stability and long-term dynamic stability.
2.Excellent transparency.
Methyl tin mercaptide has excellent transparency, It can be used in some PVC products which are highly transparent and not easy to change color.
3.Non-toxic environmental protection
The methyl tin mercaptide is non-toxic, it meets the EU Rosh regulations,approved by the FDA for use in food packaging materials at a maximum dosage of 2%
4.Good compatibility.
Methyl tin mercaptide stabilizer is compatible with PVC, and it is easy to disperse in the PVC compound, and the liquid will not precipitate in the products processed by it for a long time. Therefore, it will not affect the surface properties and electrical properties of the products.
5.Good flow performance.
Methyl tin stabilizer can improve the melting effect of PVC, so that PVC in the processing of a better flow.
6.Stronger resistance to scaling.
Methyl tin mercaptide will not occur scaling phenomenon, so that the production operation to shorten the equipment cleaning time.
Production Standards And Properties Of Methyl Tin Mercaptide:
The main standards of methyl tin mercaptide products are:GB/T 26026-2010 Methyl Tin Mercaptide HG/T 3879-2006 Heat Stabilizer Methyl Tin Mercaptide .They mainly applicable to methyl tin produced from tin and 2-ethylhexyl thioglycolate as raw material.
Main quality indexes of methyl tin mercaptide: tin content, sulfur content, density, viscosity, transmittance, color, refractive index, acid value, etc.
The following is Changsheng Material with 19% tin CS-181 content to share technical specifications.
| Item | Specifications |
| Brand Name | Changsheng Material |
| Model Number | CS-181 |
| CAS Number | 57583-35-4 |
| Appearance | Clear transparent liquid |
| Colour (Pt-Co value) | ≤50 |
| Tin Content % | 19±0.5 |
| Sulfur Content % | 12±0.5 |
| Specific gravity (25℃, g/cm3) | 1.16±0.03 |
| Viscosity (25℃, mPa·S) | 30-90 |
| Monomethyl tin content (%) | 27.0 |
| Trimethyl tin content (%) | 0.08 |
Suggestions In The Use Of Methyl Tin Mercaptide Stabilizer:
1:PVC Calendaring Molding
CS-181 has excellent early whiteness, mid and long-term color stability and transparency in hard PVC sheet or rigid film. Because of the general lubricity, the lubricant type and amount should be carefully adjusted to have a direct impact on the quality of the sheet.
The amount of methyl tin stabilizer in calendering is 0.8~1.5 PHR
2: Extrusion Molding
In rigid extrusion, CS-181 is mainly used in all kinds of transparent bottle pellets and tooling; it can also be used in high-grade window and door profiles, pipes and other architectural profiles.
If you are using in the extrusion of blowing PVC shrink film, you should choose the more low-cost and efficient composite methyl tin CST-181, product details please visit the website link, not too much explanation here.
Some methyl tin mercaptide dosage suggestions:
Rigid extrusion doors and windows: 0.8~1.2 PHR
Soft extrusion granulation: 0.5~1 PHR
CST-181 for printing shrink film: 1.8 PHR
CST-181-F for packing shrink film:1.3~1.6 PHR
3: Injection molding
Rigid injection molding is one of the important applications of methyltin, due to its high efficiency and low addition level. It minimizes the negative impact of liquid stabilizers on the mechanical properties and Vicat softening point of the product.
Rigid injection fittings: 1~2 PHR
Note:
This usage suggestion is for reference only, please conduct real experiments according to your own formulation and mechanical environment for specific real use.