Hydroxy-functional Solid Silicone Resin

Hydroxy-functional Solid Silicone Resin SH-3040

Product Description
This product is an intermediate of methyl phenyl silicone resin containing silicone hydroxyl group, with good compatibility and high reactivity. It can be compounded with acrylic acid, polyester and epoxy and participate in the crosslinking curing reaction; The addition of silicone intermediates through compounding or polymerization modification can significantly improve the weather resistance of the organic resin, especially the resistance to pulverization and cracking, giving the outdoor industrial paint excellent light and color retention; And Hydroxy-functional Solid Silicone Resin can also significantly improve the heat resistance of the organic resin. For example, the addition of 30% silicone intermediates can improve the continuous heat resistance of the organic resin to 300~350 ℃; It is sold as a solid form, and can also be directly or compounded for use in heat resistant and weather resistant powder coatings.

Technical index

Item	Index
Appearance	Colorless to pale yellow, transparent, solid
Volatile matter (150 ℃, 1h)	≤ 3 %
Softening point (℃)	45-70， 70-90， 90-105
Solubility in toluene (1:1)	Clear and transparent
Note: These data are for reference only and should not be used as preparation specifications.

Application
1. It is widely used in the powder coating industry, participating in the cross-linking and curing reaction of polyester, epoxy and acrylic acid, improving the heat resistance and weather resistance of the coating, and having less impact on the coating recoating than other solid silicone resins;
2. It is widely used in heat resistant industrial coatings. Generally, it can be directly added by compounding. Different addition proportion is the most critical to the temperature resistance performance. Generally, it is recommended to add ≥ 15% (calculated by effective solid content); If it can be introduced through polymerization and grafting, it can further provide more balanced performance;
3. Weathering resistant polysiloxane coating is widely used. It can be used together with organic resin to give the coating both weather resistance and salt spray resistance, meeting the requirements of HG/T 4755-2014 Polysiloxane Coating

Packaging, Storage and Transportation
It is generally packaged in 50kg, 25kg plastic lined paper drums, and stored in a cool and dry environment at 5~25 ℃. The corresponding shelf life is generally 12 months from the date of production (it can still be used if it is qualified after the expiration analysis).