Patent · US Expired

Magnetic recording carrier containing radiation hardenable dispersing agents

US4687709A · kind A · utility

3Cited by

1References

10Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Hermann Brinkmeyer · Krefeld, DE
Gerhard Hubler · Munich, DE
Hermann Perrey · Krefeld, DE
Burkhard Nippe · Munich, DE
Heinrich Kober · Starnberg, DE

Key dates

Filing date	Oct 6, 1986
Grant date	Aug 18, 1987
Priority date	—
Expiry date	Oct 6, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31935
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

This invention relates to a magnetic recording carrier in which the magnetic layer and/or the backing layer contains, in addition to the usual additives, radiation hardenable dispersing agents based on ethylenically unsaturated phosphoric acid ester mixtures capable of forming bataine type stuctures and consisting of reaction products of (A) an acrylic acid ester and/or oligo acrylate containing 1 OH group per molecule, (B) a tertiary alkylamine containing 1 OH group per molecule and (C) phosphorus pentoxide, the reaction products having acid numbers below 200.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.