Cultured stone methods of manufacture
AssigneeAmerican Stone Pioneers
InventorKenneth Wiener
Life of this patent
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Abstract
An improved, method of making a lightweight synthetic stone product mixing a white powdery mixture comprising approximately 20-90 parts by volume of Al.sub.2 O.sub.3 .multidot.3H.sub.2 O and about 10-80 parts by volume polyolefin, preferably a polyethylene such as LLPE, HDPE and Super Linear PE and polypropylene in a ratio of 30-60% by volume with a clear thermosetting resin in a ratio of about 40-70% by volume and a peroxide catalyst in about 0.1-5.0% by volume, and a pigment, if desired, with the clear thermosetting resin selected from the group of unsaturated polyesters, acrylic-modified polyesters and acrylics.
Claims21
A process of making relatively lightweight, translucent cultured stone products comprising:
- Selecting a white, powdery mixture comprising Al.sub.2 O.sub.3 .multidot.3H.sub.2 O in the range of 20 parts by volume to about 90 parts by volume, and a polyolefin in the range of 10 parts by volume to 80 parts by volume;
- Selecting a clear thermosetting resin, in the range of 40 to 70 percent by volume;
- Selecting a catalyst suitable for maintaining clarity in a finished casting, the catalyst in the range of 0.1 to 5.0 percent by volume;
- Mixing said powdery mixture, said resin and said catalyst to form a cultured stone mix;
- Placing the cultured stone mix into a mold;
- and
- Curing the mix to yield a relatively light weight, translucent cultured stone product.
A process of making relatively lightweight, translucent cultured stone products comprising:
- selecting a white, powdery mixture comprising Al.sub.2 O.sub.3 .multidot.3H.sub.2 O in the range of 30 parts by volume to 60 parts by volume, and a polyolefin in the range of 40 parts by volume to 70 parts by volume;
- selecting a clear thermosetting resin, in the range of 30 to 60 percent by volume;
- selecting a catalyst suitable for maintaining clarity in a finished casting, the catalyst in the range of 0.1 to 5.0 percent by volume;
- blending said powdery mixture, said resin and said catalyst to form a cultured stone mix;
- placing the cultured stone mix into a mold;
- and
- curing the mix to yield a relatively light weight, translucent cultured stone product.
A process of making a relatively lightweight, translucent cultured stone product comprising:
- selecting a white, powdery mixture comprising about equal parts Al.sub.2 O.sub.3 .multidot.3H.sub.2 O and equal parts of LLPE, HDPE or polypropylene;
- selecting a clear thermosetting unsaturated polyester, acrylic modified polyester or acrylic resin;
- selecting a peroxide catalyst;
- blending said powdery mixture at about 47 percent by volume with about 52 percent by volume resin with about 1 percent by volume catalyst to form a cultured stone mixture;
- polymerizing said cultured stone mixture to form the cultured stone product to yield a relatively light weight, translucent cultured stone product.
Dependencies are inferred from the claim text.