US PATENT SUBCLASS 525 / 191
.~.~.~ Polymer mixture of two or more solid polymers derived from ethylenically unsaturated reactants only; or mixtures of said polymer mixture with a chemical treating agent; or products or processes of preparing any of the above mixtures

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


525 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
191.~.~.~ Polymer mixture of two or more solid polymers derived from ethylenically unsaturated reactants only; or mixtures of said polymer mixture with a chemical treating agent; or products or processes of preparing any of the above mixtures {23}
192  DF  .~.~.~.~> Treating polymer or polymer mixture with a chemical treating agent other than solid polymer {3}
197  DF  .~.~.~.~> Specified blending process {1}
199  DF  .~.~.~.~> Solid polymer derived from fluorine-containing ethylenic reactant {1}
201  DF  .~.~.~.~> Solid polymer derived from metal-containing ethylenic reactant
202  DF  .~.~.~.~> Solid polymer derived from reactant containing an acetylenic group
203  DF  .~.~.~.~> Solid polymer derived from ethylenic reactant containing a heterocyclic nitrogen {2}
206  DF  .~.~.~.~> Solid polymer derived from reactant containing a chalcogen atom (O, S, Se, Te) as part of a heterocyclic ring {2}
209  DF  .~.~.~.~> Solid polymer derived from reactant containing elements other than C, H, O, N, S, or Cl
210  DF  .~.~.~.~> Solid polymer derived from reactant containing a fused- or bridged- ring system {1}
212  DF  .~.~.~.~> Solid polymer derived from sulfur-containing reactant
213  DF  .~.~.~.~> Solid polymer derived from chlorine-containing reactant other than vinyl(idene) chloride {1}
216  DF  .~.~.~.~> Solid polymer derived from cycloaliphatic-containing reactant
217  DF  .~.~.~.~> Solid polymer derived from reactant containing nitrogen atom other than from (meth)acrylonitrile {1}
219  DF  .~.~.~.~> Solid polymer derived from reactant containing a phenolic group
220  DF  .~.~.~.~> Solid polymer derived from reactant containing a carbonyl group other than as part of a carboxylic acid or derivative
221  DF  .~.~.~.~> Solid polymer derived from reactant containing a carboxylic acid group
222  DF  .~.~.~.~> Solid polymer derived from reactant containing a carboxylic acid ester group {4}
231  DF  .~.~.~.~> Solid polymer derived from oxygen-containing reactant
232  DF  .~.~.~.~> Solid polymer derived from reactant containing at least two ethylenic groups and is devoid of aryl ring {3}
238  DF  .~.~.~.~> Solid polymer derived from (meth)acrylonitrile
239  DF  .~.~.~.~> Solid polymer derived from vinyl(idene) chloride
240  DF  .~.~.~.~> Solid polymer derived from ethylene or propylene
241  DF  .~.~.~.~> Solid polymer derived from an aromatic hydrocarbon reactant

DEFINITION

Classification: 525/191

Polymer mixture of two or more solid polymers derived from ethylenically unsaturated reactants only; or mixtures of said polymer mixture with a chemical treating agent; or products

or processes of preparing any of the above mixtures:

(under subclass 55) Subject matter which concerns mixing of two or more solid polymers derived from ethylenically unsaturated reactants only, a mixture of said polymer mixture with a chemical treating agent, or processes of forming or the resultant product of any of the above mixtures.

(1) Note. Excluded from this subclass are multi-step polymerization-postpoly-merization processes which occurs in the presence of a single preformed solid polymer from ethylenic reactants only and an ethylenic reactant which affords a polymeric mixture.

(2) Note. Placement of a patent in this subclass is on the basis of the ethylenic reactants used in the preparation of solid polymer and not on the basis of ethylenic reactants which may be reacted with a mixture of solid polymers from ethylenic reactants only.

SEE OR SEARCH THIS CLASS, SUBCLASS:

193, for metalation of po;ystyrene blended with polybutadiene which is subsequently contacted with butadiene.

242+, for lithiation of styrene in the presence of polyethylene to yield lithium. Terminated polystyrene followed by its reaction with butadiene to produce block (polybutadiene. polystrene) in admixture.