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US 5,310,421 AGranted
Play material
AssigneeMattel, Inc.
InventorsWallace H. Shapero, Susan A. Reyes
Life of this patent
Estimating the term…
Abstract
A play material is formed using a self cross-linking sodium alginate combined with germaben II-E and butylparaben preservatives. A sodium chloride salt provides further preservative action which increases the firmness of the alginate gel material. The play material exhibits improved preservative action and avoidance of eye and skin irritation problems on the part of the user.
Claims5
A play material comprising:
- 2.5 to 4.0 percent by weight of a self cross-linking sodium alginate;
- 1.0 to 3.5 percent by weight of a glycerin and water solution in excess of 90 percent glycerin;
- a preservative;
- about 4.0 percent by weight sodium chloride;
- and
- water.
3 more elements
A play material wherein the play material includes percent by weight:
- ______________________________________ SELF CROSS-LINKING SODIUM ALGINATE 3.33 GLYCERIN (99%) 1.00-3.50 COLORANT 0.058 DI-WATER q.s. to 100 PRESERVATIVE 1.355 SODIUM CHLORIDE 2.00-7.00 ______________________________________
A play material consisting essentially of by weight 3.33 percent self cross-linking sodium alginate;
- 1.0 to 3.5 percent glycerin;
- 0.06 percent colorant;
- 1.355 percent preservative;
- 2.0 to 7.0 percent sodium chloride;
- and water as needed to complete to 100 percent.
2 more elements
Dependencies are inferred from the claim text.