Onyx marble

Some of the Group IA and IIA metals are found in nature in the form of carbonates, silicates, nitrates, and phosphates. For example, calcium carbonate is one of the most important naturally occurring compounds, and it is found in several forms. The most common form of calcium carbonate is limestone, which is used extensively as a building stone as well as the source of lime. Other forms include chalk, calcite, aragonite, Iceland spar, marble, and onyx. Many other materials such as egg shells, coral, pearls, and seashells are composed predominantly of calcium carbonate. Thus, it is one of the most widely occurring compounds in nature. 

Onyx Classica [ALCOA]. AL,03 3H20. TM for a filler flame-retardant in the premium products of the synthetic marble industry. 

Polymer concretes can be mass produced, taking advantage of short curing times. With special processing techniques and molds it is also possible to cast equipment such as wash basins and bath tubs, plain or with a marble or onyx effect, slabs with many different surface effects, and even marbles with two or more colors. 

Casting. Umeinforced polyester is poured into an open mold, typically silicone rubber, and cured to produce bathroom sinks, counters, tubs, showers, and toilets giftware, art objects, and cultured marble and onyx (Table 3.21). Appearance is controlled by choice of fillers. 

A thixotropic, preaccelerated, UV stabilised isophthalic/NPG gelcoat for spray application, offering very good resistance to water and chemicals at elevated temperature with an extraordinary bright colour making it suitable for the manufacture of sanitary ware, synthetic marble/onyx tiles, b. 52.5%... 

THERMOSET RESINS FOR POLYMER CONCRETE, CULTURED MARBLE, ONYX ASSOCIATED FILLED APPLICATIONS... 

Databook - Section E Thermoset Resins For Poiymer Concrete, Cuitured Marble, Onyx Associated Filled Applications... 

Designed for use for marble or onyx, offering low colour and excellent thermal shock resistance in gelcoated applications, c. 2900-3400 e. 35-50/21... 

A marble/onyx casting resin of good colour, offering excellent filler wet-out and fast gel in the production of sinks and flat stock, c. 1250 e. 19/25... 

A low colour marble/onyx casting resin, c. 1500 e. 28.5/25 A longer gel time, summer version of SIL 94BA-993. 

Preaccelerated, low reactivity, high viscosity resins for the manufacture of cultured marble and onyx. The only quoted data is e 30-34 n 1.1%... 

A medium reactive, low shrinkage, isophthalic/NPG casting resin for the production of clear and filled items such as cultured marble, onyx, sanitary ware, baths, tiles and building panels. 

Orthophthalic casting resins designed for the manufacture of cultured marble, onyx or granite and versatile for both small and large items, c. 24 = 900-1500 25=1900-2400 e. 24 = 11-15/25 25 = 15-19/25... 

A preaccelerated good curing resin for use in the casting of marble and onyx ware. 

An unaccelerated, clear, low viscosity, readily pigmented, rapid-cure orthophthalic with a wax addition, designed for the manufacture of artificial marble and onyx for such applications as vanitory units, table tops, and flooring, c. 4-5 e. 8-10/30... 

A preaccelerated, practically colourless, low reactivity, high viscosity orthophthalic resin which cures with a low exotherm and Is particularly suitable for thick-walled sanitary ware with a marble or onyx effect, b. 68% c. 1820-2170... 

See also, E - Polymer Concrete, Cultured Marble, Onyx Associated Filled AppUcatlons . Exact classification due to similarity of use, is on occasion not clarified the manufacturer.)... 

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