Novel heat-hardenable binders phenol-formaldehyde+HMT+acid

US4942217A · kind A · utility

Assignee

• Rutgerswerke Aktiengesellschaft · DE

Inventors

• Arno Gardziella · Witten, DE
• Alois Kwasniok · Iserlohn, DE

Key dates

• Filing date: Oct 26, 1988
• Grant date: Jul 17, 1990
• Expiry date: Oct 26, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22C1/2253
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A heat-hardenable binder comprising (a) a phenolic resin of a phenolic compound and formaldehyde in a molar ratio of 1:1 to 1:2 and (b) an effective amount of a hardener mixture of hexamethylenetetramine and an acidic latent hardening agent with reduced emission problems and curing rapidly.