February 1991 Additives for Polymers

us 4,963,594 HEAT/COLOUR STABILIZED PVC Rhone-Poulenc Priority Date: 30 March 1982

Contains at least one organozinc derivative, an organic derivative of a metal from Group IIa, and at least one thiomalic acid diester.

US 4,963,605

us 4,963,606

us4,963,607

us4,963,609

US 4,963,610

STABILIZED POLYOLEFINES Sumitomo Chemical Co. Priority Date: 8 November 1985

Filled polyolefin containing a phenolic compound, a metal deactivator, and a sulphur-containing compound.

HEAT STABILIZED POLYSTYRENE Ethyl Corp. Priority Date: 6 September 1989

Contains a brominated cycloaliphatic compound as fu*e retardant, and a dibutyltin mercaptide, a hindered phenolic and a polyhydroxy aliphatic compound as the thermal stabilizer system.

ANTI-PHOTODEGR,ADANT FOR POLYOLEFINES Pennwalt Corp. Priority Date: 13 June 1989

Use of organosulphides.

LOW SMOKE AND FIRE RRTARDANT FLUOROPOLYMERS Du Pont & Co. Priority Date: 1 November 1989

Contains a metal oxide and finely powdered FTFE as drip suppressant.

FIRE RETARDANT NYLONS EMS-Inventa AG Priority Date: 28 March 1988

Use of magnesium hydroxide in platelet form as fire retardant.

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