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Hello everyone. I want to know how to make grow-in-water toys.
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Anonymous
2016-01-18 05:49:24 Post No. 35026
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Anonymous 2016-01-18 05:49:24 Post No. 35026 [Report]
Hello everyone. I want to know how to make grow-in-water toys. I have experience using silicone and resin and I have a 3d printer to work with. I already have the matrix for the toy, but I don't really know wich material I must use and how. I can't find any intructions of making it and wikipedia says they are made from a superabsorbent polymer, but doesn't say wich one. My only source says they are maded of polyacrylonitrile, ethylene glycol and glycerol, but -again- doesn't say how to combine them.

Can someone help me or direct me with a link?

Update: I find a new recipe:

"[...] a mixture of sodium polyacrylate, polyvinyl acetate (a polymer used as a binder) and ethylene vinyl acetate (a polymer used to mold the toy into whatever shape it’s supposed to be)."
>>
Anonymous 2016-01-18 08:16:13 Post No.35086
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Anonymous 2016-01-18 08:16:13 Post No.35086 [Report]
Try searching patent databases? Maybe someone filed instructions there.
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