calcium stearate


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calcium stearate

[′kal·se·əm ′stir‚āt]
(organic chemistry)
Ca(C18H35O2)2 A metallic soap produced as a white powder that is insoluble in water but slightly soluble in petroleum, benzene, and toluene.

calcium stearate

A product of the reaction of lime and stearic acid; used as an integral water repellant in concrete.
References in periodicals archive ?
Slightly different from the concrete with a quality of 20 MPa, the compressive strength of the concrete with a quality of 30 MPa increased slightly when 0.21% calcium stearate by weight of cement was added.
The global calcium stearate market can be divided, based on application, into the following segments: Plastic and rubber industries; construction industry; personal care and pharmaceutical industries; and paper, food, and other industries.
%) BHT/(Irganox 1010) 0 0.05 Calcium stearate 1.3 1.2 Stearic acid <0.2 -- ESBO -- -- Azonitrile <0.1 -- Halogenated Typical monomer Bromobutyl bromobutyl (ppm) elastomer stopper Halogenated C4 ~1-2 ND Halogenated C5 ND ND Oligomer (ppm) C8 <5 ND X C8 <5 ND C 13 50 20 X C13 1,000 100 C21 1,000 400 X C21 250 400 Additive (wt.
* For flexible and rigid PVC, Synpro calcium stearate 15F and Synpro calcium stearate 12B.
Zinc and calcium stearates are said to provide lubricity, plasticizing and release properties in polymer systems.
Furthermore, each variation was carried out with and without adding calcium stearate (1% relative to the amount of Ti|O.sub.2~ pigment) as a lubricant.
The calcium stearate filler was purchased from Alfa Aesar and used without further purification.
Synpro calcium stearate 15F and Synpro 92 for flexible and rigid PVC are easily dispersed, low-dusting, high-bulk and granular.
Too little calcium stearate powder, the main ingredient of the antitack liquid additive, and rubber sheets could adhere to each other.
The components of the simulated recycle formulation containing the primary stabilization system were chosen for their ready availability and broad usage; they were: Resin - Himont Pro-Fax 6501; Antioxidant - Ciba-Geigy Irganox 1010, 1000 ppm; Phosphite - Ciba-Geigy Irgafos 168,500 ppm; Stearate - calcium stearate, polypropylene grade, 500 ppm.
Also three nonlead lubricants: Hal-Lub-B (barium stearate), Hal-Lub-C (calcium stearate), and Hal-Lub-Z (zinc stearate).