Calcium Stearate
Calcium stearate used as a heat stabilizer for PVC and a variety of plastics processing lubricant, release agent, etc.In the hard products, the gelation speed can be improved by the combination with the base lead salt and lead soap.It is also used in food packaging, medical devices and other non-toxic soft films and appliances.It can also be used as halogen absorbent for polyethylene and polypropylene to eliminate the adverse effect of residual catalyst on color and stability.As a plasticizer in rubber processing, it can soften natural rubber and fully formed rubber, and has almost no effect on vulcanization.It is also used as a lubricant for polyolefin fiber and molding plastics, thickening agent for grease, waterproofing agent for textiles, smoothing agent for paints, and plasticizer for making plastic records.Also used in pencil lead production and medicine, cosmetics, perfume industry.
A, calcium stearate basic properties: Appearance: fine white, fluffy powder, Molecular formula :(C17H35COO) 2Ca; Molecular weight: 606; CAS NO. 1592-23-0; Ratio weight: 1.08. Soluble in hot water, toluene, ethanol and other organic solvents. Two, technical indicators: Index name: first-class first grade second grade; Calcium content: % 6.5±0.5 6.5±0.6 6.5±0.7; Free acid :(stearic acid) %≤ 0.5 0.5 0.5; Heating reduction: %≤ 2.0 3.0 3.0; Melting point: ℃ 149-155 ≥140 ≥125; Fineness :(0.075mm sieve through) %≥ 99.5 99.0 99.0; Impurities :(grain) ≤ 6 12 -; Residue :(0.063mm screen residual) %≤ 1.0 1.0 1.0 whiteness %≥ 95 90 -; Function: The acid neutralizer in polyolefin has a direct contribution to the color stability and corrosion prevention of polyolefin; 1, lubrication/processing AIDS: improve the polyolefin, polyamide, styrene and rubber in the extrusion molding (film, fiber, copying, etc.) and pressing molding processability.
2, release: for thermoplastics, rubber and thermosetting products, such as polyurethane foam and unsaturated polyester.
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