Molded articles

US4061710A · kind A · utility

Assignee

• Rutgerswerke Aktiengesellschaft · DE

Inventors

• Werner Schafer · Essen, DE
• Wolfram Busch · Hochheim, DE
• Hermann Wallhausser
• Manfred Richter
• Siegfried Wilhelm

Key dates

• Filing date: Jun 10, 1975
• Grant date: Dec 6, 1977
• Expiry date: Jun 10, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/54
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A moulding composition comprising (a) a melamineformaldehyde resin having a molar ratio of melamine to formaldehyde in the range 1:1.5 to 1:2.5 which upon hardening is capable of withstanding heating at 200.degree. C concerned for 2 hours in air without causing significant structural damage or color change to moulded articles made from moulding compositions in which it has been incorporated, (b) an accelerator derived from a mono- or dibasic organic acid, (c) an inorganic filler having low adsorption characteristics and an oil adsorption value of 10 to 40, (d) a further inorganic filler and (e) an external lubricant comprising at least one carboxyorganosiloxane esterified with an alcohol containing up to 4 carbon atoms and the process of preparing said moulding compositions.