Sulfo-containing phenol-formaldehyde condensates

US4079040A · kind A · utility

Assignee

• Cassella Farbwerke Mainkur Aktiengesellschaft

Inventors

• Joachim Ribka · Offenbach am Main, DE
• Otto Trosken
• Karlfried Keller · Frankfurt am Main, DE
• Erwin Herrmann
• Wolfgang Bodenstedt · Frankfurt am Main, DE
• Peter Dorries · Frankfurt am Main, DE

Key dates

• Filing date: Apr 30, 1975
• Grant date: Mar 14, 1978
• Expiry date: Apr 30, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B24/22
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Spreadability and/or strength of water-setting inorganic bonding compositions are improved by incorporating in them a water-soluble condensation product of formaldehyde with a diphenol ##STR1## The condensation can also take place in the presence of a water-soluble sulfite, a water-soluble sulfamate, a water-soluble pyrosulfite, a phenol sulfonic acid or a naphthalene sulfonic acid.