Ink for marking
AssigneeKinki Aerosol Industrial Co., Ltd.
InventorKenji Arakawa
Life of this patent
Estimating the term…
Abstract
An ink for marking any fabric, which fades to disappear after use, employs a phthalein color. The fading time which is suitable for the marking ink can be regulated by the addition of ethanolamines and lower alcohols so that the phthalein color disappears naturally after from several hours to about 10 days. When a suitable ink for marking is used to mark a fabric, sewing may be followed according to the mark, and the mark disappears after a lapse of a determined time after the sewing operation is ended. The ink does not cause damage to the fabric.
Claims5
A time disappearing marking ink comprising a solution including a phthalein indicator as color and from 1 to 8% by weight of sodium carbonate having water of crystallization of at least seven molecules, from 10 to 50% by weight of at least one lower alcohol having from one to four carbon atoms, about 2% by weight of a thickener comprising a shellac, and from 0.5 to 10% by weight of at least one ethanolamine selected from the group consisting of ##STR3##
Dependencies are inferred from the claim text.