Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1993-11-26
1995-04-11
Szekely, Peter A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524432, 524555, C08K 330, C08K 322, C08L 3326
Patent
active
054059054
ABSTRACT:
The artificial plant soil composition is a major proportion, by weight, of a hydrated, non-toxic polymeric gel, such as one formed of a polyacrylamide co-polymer and water, and a minor proportion, by weight, of a non-toxic phosphorescent pigment uniformly distributed in the gel. The pigment preferably is about 98.5 percent, by weight of the pigment, of zinc sulfide, with substantially the remainder being zinc oxide, but with sufficient copper sulfide present, for example, about 500 ppm, to activate the zinc sulfide. The polyacrylamide co-polymer is usually about 1 percent, by weight, of the composition, with the water forming the remainder, except for the pigment. The pigment is usually present in a concentration of about 0.12 percent, by weight of the composition. The composition is used as a potting soil for plants and has the added effect of attractively exhibiting phosphorescence. The presence of the pigment in the gel does not cloud the clear gel.
REFERENCES:
patent: 3822214 (1974-07-01), Juby
patent: 4165418 (1979-08-01), Speakman
patent: 4985061 (1991-01-01), Hughes
patent: 5336708 (1994-08-01), Chen
Hy-Tec Enterprises
Posta Jr. John J.
Szekely Peter A.
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