摘要 |
A compacted particulate polymer additive composition in a dry granular form formed from a substantially uniform mixture of the following components: (a) at least one particulate sterically-hindered phenolic compound, and (b) one or more particulate polymer additives other than a sterically-hindered phenolic compound; wherein the particles of said composition are held together in compacted dry granular form exclusively or substantially exclusively by contact with dried surfaces of in situ desolvated particles from particles o f one or more at least partially solvated components of (a), and optionally by contact with dried surfaces of in situ desolvated particles from particles o f one or more at least partially solvated components of (b). Compositions of this type except that there is no component (b) are also described. |