Temporary solidifier for playing with sand

• US 4,957,558 A
• Filed: 06/13/1988
• Issued: 09/18/1990
• Est. Priority Date: 11/16/1987
• Status: Expired due to Fees

• Current Assignee: Hiroshi Ueda, Tomonao Ueda
• Original Assignee: Hiroshi Ueda, Tomonao Ueda
• Inventors: Ueda, Hiroshi, Ueda, Tomonao
• Primary Examiner(s): Bell, Mark L.
• Assistant Examiner(s): JONES, DEBORAH D
• Application Number:
  US07/206,128
• Time in Patent Office: 827 Days
• Field of Search: 106/213, 106/148, 106/900, 106/38.4, 106/38.51, 106/214, 106/157, 106/137
• US Class Current: 106/160.1
• CPC Class Codes: A63H 33/001 Toy-moulding appliances; Toy moulding
• CPC Class Codes: B44C 3/04 Modelling plastic materials, e.g. clay
• CPC Class Codes: C04B 14/06 Quartz; Sand
• CPC Class Codes: C04B 2103/0001 Living organisms, e.g. microorganisms, or enzymes
• CPC Class Codes: C04B 24/00 Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
• CPC Class Codes: C04B 26/28 Polysaccharides or derivatives thereof
• CPC Class Codes: C04B 26/285 Cellulose or derivatives thereof C04B26/24 takes precedence
• CPC Class Codes: C04B 41/53 involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete C04B41/0036 - C04B41/0054 take precedence
• CPC Class Codes: C09K 17/32 of natural origin, e.g. cellulosic materials

Abstract

A temporary solidifier for playing with sand or the like together with added water to form a work having a desired shape is disclosed. The temporary solidifier consists of a combination of adequate quantities of a glue and a revolsing enzyme and is added to the sand or the like.

Claims

1. A solidified work having a shape and composed of silica or sand that is held together by a suitable quantity of water and a small quantity of an adhesive, the improvement comprising that said solidified work also includes a resolving enzyme in an amount sufficient to decompose the adhesive.

2. A solidified work according to claim 1 wherein said enzyme is selected from the group consisting of cellulase, amylase and protease.

3. A solidified work according to claim 1 wherein the amount of enzyme is between 0.001 and 2 wt.% on the weight of the glue.

4. A solidified work according to claim 2 wherein the amount of enzyme is between 0.001 and 2 wt.% based on the weight of the glue.