STABILIZERS Phillips Petroleum Co. Priority Date: 13 June 1988 Complex acrylates as stabilizers for conjugated diene/monovinyl aromatic copolymers.
us 4,956,410
ANTIOXIDANT MASTERBATCHES University of Birmingham Priority Date: 7 July 1989 Process for preparing a bound antioxidant polymer masterbatch concentrate.
us 4,957,949
COLOUR MASTERBATCH Matsui Shikiso Chemical Co. Priority Date: 29 October 1987 Thermochromic colour masterbatch for use in thermoplastics.