Fórmulas

The polyester resins which dominate this application are carefully compounded to be compatible with the mineral fillers employed to give color and appearance which, with proper pigmentation, can faithfully reproduce the appearance of the natural stones. The resins must also give composites which will give the very long term service durability required of sanitaryware.

Calcium carbonate, in the form of ground limestone, is used to make cultured marble. 30 and 80 mesh are popular grades and are usually used as a mixture of two mesh sizes. A typical resin-filler mix for cultured marble is shown in the following Table 4-21.

Table 4-21. Cultured Marble Matrix Formulation

	Pounds
Polyester marble resin	100
30 mesh calcium carbonate filler	200
80 mesh calcium carbonate filler	100
Methyl ethyl ketone peroxide catalyst	0.4–0.8

Titanium dioxide white pigment ground color to suit Other colors to simulate marble veining to suit

A common compounding sequence will mix all of the ingredients except the veining colors. The mix, usually called the “matrix,” can then have the veining pigments only partially mixed into the matrix to give, on casting and cure, the pigmented veining typical of natural marble.

Limestone: Carbonato de Calcio partículas menos de 4mm-

Polymer Resin (C

Polymer Resin (COLPOLY 7233)
The Colpoly 7233 is an unsaturated polyester resin based on orthoftalic acid

dissolved in styrene.
La cantidad de resina fue la que absorbió la mezcla de áridos.