Biodegradable air drying screen printing ink

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524 56, 523124, 523128, 523160, 106 24R, 106 24A, 106 24B, 106 25A, 106 25R, 106 27R, 106 30R, 106 20R, 8646, C08L 504, C08K 515, C08K 500, C09B 6100

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055212336

ABSTRACT:
A biodegradable air drying screen printing ink. The ink includes a base made of water and a colloidal gum, preferably sodium alginate. A naturally-occurring binder is added to the base, preferably natural latex. The ink also includes one or more pigments made from natural ingredients, preferably plants or insects.

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patent: 4699664 (1987-10-01), Hettiarachchy et al.
patent: 4936916 (1990-06-01), Shinmitsu et al.
patent: 5114479 (1992-05-01), Keaveney et al.

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