US PATENT SUBCLASS 523 / 351
.~.~ Utilizing plural mixing operations in preparation of a solid polymer inert ingredient concentrate, e.g., master batch, etc.

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
351.~.~ Utilizing plural mixing operations in preparation of a solid polymer inert ingredient concentrate, e.g., master batch, etc.

DEFINITION

Classification: 523/351

Utilizing plural mixing operations in preparation of a solid polymer inert ingredient concentrate, e.g., master batch, etc.:

(under subclass 1) Process wherein a desired or intentional composition is treated or formed utilizing plural mixing operations to produce a master batch of solid polymer with an inert ingredient.

(1) Note. The mixing process must either be (a) specifically described as a master batching, or (b) the intention of a subsequent further mixing step of the concentrate with additional material must be specified in the claim. In either case, plural mixing steps must be recited in the formation of the master batch.

(2) Note. Plural mixing steps includes plural stages of blending, etc.