Molded articles

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface

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260 21, 260 291SB, 260 318T, 260 39R, B29G 300, C08G 1232

Patent

active

040617106

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.

REFERENCES:
patent: 3288902 (1966-11-01), Schuller et al.
patent: 3338851 (1967-08-01), Taylor et al.
patent: 3577492 (1971-05-01), Welsh et al.
patent: 3786041 (1974-01-01), Talsma
patent: 3789041 (1974-01-01), Talsma
patent: 3811903 (1974-05-01), Daskivich
Chemical Abstracts, 1967, vol. 67, p. 82702a.

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