US PATENT SUBCLASS 525 / 242
.~.~.~ Polymer derived from ethylenic reactants only mixed with ethylenic reactant

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}
242.~.~.~ Polymer derived from ethylenic reactants only mixed with ethylenic reactant {21}
243  DF  .~.~.~.~> Reactions with ethylenic reactants in two or more diverse phases, e.g., bulk, emulsion, melt, solution, etc.
244  DF  .~.~.~.~> Contacting a solid polymer derived from ethylenic reactants only with an ethylenic reactant in the presence of a specified material {14}
267  DF  .~.~.~.~> Including step of preparing a polymer in the presence of a specified material and in the absence of a preformed polymer derived from ethylenic reactant only {3}
274  DF  .~.~.~.~> Ethylenic reactant contains a metal atom
275  DF  .~.~.~.~> Ethylenic reactant contains an acetylenic group
276  DF  .~.~.~.~> Ethylenic reactant contains a fluorine atom
277  DF  .~.~.~.~> Ethylenic reactant contains a carbonate group
278  DF  .~.~.~.~> Ethylenic reactant contains a carbamate group
279  DF  .~.~.~.~> Ethylenic reactant contains nitrogen heterocycle, e.g., pyridine, diazines, etc. {4}
284  DF  .~.~.~.~> Ethylenic reactant contains a chalcogen heterocycle {2}
287  DF  .~.~.~.~> Ethylenic reactant contains a phosphorus atom
288  DF  .~.~.~.~> Ethylenic reactant contains atoms other than C, H, O, N, S, or Cl
289  DF  .~.~.~.~> Ethylenic reactant contains a fused- or bridged-ring system {1}
291  DF  .~.~.~.~> Ethylenic reactant contains a sulfur atom
292  DF  .~.~.~.~> Ethylenic reactant contains a chlorine atom and is other than vinyl(idene) chloride
293  DF  .~.~.~.~> Ethylenic material contains a nitrogen atom and is other than (meth)acrylonitrile {3}
297  DF  .~.~.~.~> Ethylenic reactant contains a cycloaliphatic group
298  DF  .~.~.~.~> Ethylenic reactant contains an oxygen atom {5}
313  DF  .~.~.~.~> Ethylenic reactant contains at least two unsaturated groups and is devoid of an aromatic group {2}
317  DF  .~.~.~.~> Ethylenic reactant is vinyl(idene) chloride {1}
319  DF  .~.~.~.~> Ethylenic reactant is acyclic hydrocarbon {3}

DEFINITION

Classification: 525/242

Polymer derived from ethylenic reactants only mixed with ethylenic reactant:

(under subclass 55) Subject matter wherein a solid polymer derived from ethylenically unsaturated reactants only is mixed with an ethylenic reactant, processes of mixing, or the resultant product of any of the above mixture, e.g., graft copolymerization of poly(styrene-butadiene) with acrylonitrile or the block copolymerization of polystyrene with butadiene, etc.

(1) Note. This and indented subclasses contain as shown above graft and block copolymers whenever prepared according to the limitations set forth under this subclass. Thus, the process and product of preparing a mixture of graft poly(butadiene-styrene-polystyrene-acrylonitrile) with poly(styrene-acrylonitrile) starting with polybutadiene and styrene and acrylonitrile, is classified here.

(2) Note. This and indented subclasses also contain polymers prepared from a combination of ethylenic reactants mixed with nonethylenic reactants when reacted in the presence of ethylenically polymerized polymers, e.g., ethylene-ethylene oxide copolymer, propylene-sulfur dioxide copolymer. In the Class Definition of this class, see Lines With Other Classes and Within This Class, section II. B(2) for lines between this subclass and its indents.

(3) Note. This and indented subclasses also contain those products and compositions derived from the contacting of solid polymers from ethylenic reactants only with ethylenic materials wherein the ethylenic reactant interacts with the polymer without undergoing simultaneous or subsequent polymerization; (e.g., treating poly(2-hydroxethyl-acrylate) with acrylyl chloride or polyacrylic acid with allylamine, etc.).

(4) Note. Patents in the area are placed in the first subclass that provides for the solid polymer or ethylenic monomer. No distinction has been made as to amounts of required materials. Solid polymers from ethylenic reactants only are classified on the basis of the initial ethylenic reactants utilized in preparing same. No weight, for purposes of classification, has been given to polymers which have been post-treated chemically to introduce atoms therein or remove atoms which were part of the original polymer prior to introduction of the ethylenic monomer. See the Search Note below.

(5) Note. In those subclasses indented hereinbelow which recite "Block" in the title, the requirement for placement of a document therein is that the required ethylenic material as noted by the subclass title be in the block portion of the polymer and not in the graft portion of the molecule.

(6) Note. An ethylenic reactant requires the presence of two carbon atoms bonded together by a double or triple bond, with the proviso that the double bond is not part of an aromatic ring, or of a ring which shares a double bond with an aromatic ring. The term aromatic denotes a compound which contains a benzene nucleus whether or not it is condensed with other rings. Reactants such as furan, thiophene and pyrrole would thus meet the requirements for a ethylenically unsaturated compound. SEE OR SEARCH THIS CLASS, SUBCLASS:

313, for the product obtained by halogenating polybutadiene and subsequently mixing same with vinyl chloride where said product is classified on the basis of butadiene.