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Waxes for Hot Melt Ink Formulation

IP.com Disclosure Number: IPCOM000096673D
Original Publication Date: 1963-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Crimi, JS: AUTHOR [+3]

Abstract

A three-component synthetic wax system can be substituted for carnauba wax in the formulation of hot melt inks with no sacrifice in the desirable ink properties.

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Waxes for Hot Melt Ink Formulation

A three-component synthetic wax system can be substituted for carnauba wax in the formulation of hot melt inks with no sacrifice in the desirable ink properties.

This synthetic wax system is composed of 15% by weight didocosyl azelate, 50% by weight monodocosyl glutarate, and 35% by weight docosyl docosynate. The individual components of the system are prepared by the reaction of the appropriate alcohol with the appropriate acid in the presence of the appropriate catalyst. This wax system, when compounded into a medium ink formulation containing approximately 40% by weight wax, 23% by weight mineral oils, and 37% by weight carbon black, toners and dyes, results in an ink which in terms of flow properties, viscosity index, and compressive modulus is equal to a medium ink prepared with carnauba wax.

When this synthetic wax based ink is coated on a tissue backing, the resulting carbon paper possesses satisfactory print transfer characteristics as well as shelf life. Furthermore, other di- and mono-docosyl esters of dibasic acids can also be compounded with docosyl docosynate to produce satisfactory carbon paper inks.

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