US 4,895,901 Light stabilizer

Julv 1990

Additives for Polvmers

us 4,894,399

LIGHT STABILIZED POLYMER MICROPARTICLES Ciba-Geigy Priority Date: 4 June, 1987. Contain epoxy groups. Polymerization of these microparticles is carried out in the presence of the light stabilizer.

us 4894,491

COLOUR STABILIZER FOR IRRADIATED POLYCARBONATE General Electric Co. Priority Date: 22 December, 1986. Use of an epoxy compound.

us 4$W4,431

CURING AGENT FOR EPOXY RESINS Ciba-Geigy priority Date: 23 May, 1988. Comprises anhydrous methane sulphonic acid and an aliphatic or cycloaliphatic primary or secondary amine.

us 4895,879

INTERNAL MOULD RELEASE AGENT The Dow Chemical Co. Priority Date: 20 April, 1987. Zinc carboxylate and a compatibilizer for an isocyanate reactive polymer.

us 4&395,884

ANTIDEGRADANTS The Goodyear Tire & Rubber Co. Priority Date: 6 October, 1987. Rubber containing microencapsulated anti-degradants.

us 4$395m5

STABILIZERS Union Carbide Priority Date: 6 September, 1988. Polymers stabilized with polysiloxanes containing sterically hindered heterocyclic moiety.

us 4,895,991

LIGHT STABILIZER Ferro Corp. Priority Date: 23 November, 1988. Piperidine modified acrylate-methacrylate copolymer.

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