US PATENT SUBCLASS 528 / 230
.~ FROM ALDEHYDE OR DERIVATIVE THEREOF AS REACTANT

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
230.~ FROM ALDEHYDE OR DERIVATIVE THEREOF AS REACTANT {12}
232  DF  .~.~> Polymerizing in the presence of a specified material other than a reactant {4}
244  DF  .~.~> Fluorine- or phosphorus-containing reactant
245  DF  .~.~> From glyoxal or compound having two or more -C(=O)-H groups per se
245.3  DF  .~.~> With a polycarboxylic acid reactant which is a dimer or trimer of an ethylenically unsaturated aliphatic monocarboxylic acid having at least ten carbon atoms; or adduct of said unsaturated monocarboxylic acid with an alpha, beta ethylenically unsaturated carboxylic acid or derivative
245.5  DF  .~.~> With a reactant which is a fatty acid glycerol ester, a fatty acid or salt derived from a naturally occurring glyceride, tall oil, or a fatty acid derived from tall oil
246  DF  .~.~> Ethylenically unsaturated reactant other than unsaturation solely in heterocyclic ring containing only oxygen as hetero atom
247  DF  .~.~> With hydrocarbon or halogenated hydrocarbon reactant
248  DF  .~.~> With heterocyclic reactant which is not an aldehyde or derivative {5}
259  DF  .~.~> With >N-C(=X)-N< -containing reactant wherein X is a chalcogen atom {3}
265  DF  .~.~> Sulfur-containing reactant
266  DF  .~.~> With nonaldehyde or nonaldehyde derivative nitrogen-containing compound {3}
270  DF  .~.~> From aldehyde or aldehyde derivative as sole reactant (includes copolymer of only aldehydes or aldehyde derivatives)

DEFINITION

Classification: 528/230

(under subclass 1) Subject matter under Class 520, ...

involving polymers derived from at least one aldehyde or derivative as a reactant or processes of polymerizing; polymerizable compositions containing as a reactant an aldehyde or derivative or process of preparing.

(1) Note.

(A)

An aldehyde derivative for purposes of this subclass includes

(1) Compounds having a X-CH2OH group wherein X is other than carbon or hydrogen. Included herein are paraformaldehyde, methylol derivatives of urea, etc.

(2) Heterocyclic compounds having only carbon and oxygen as ring atoms in an alternating manner and in equal amount, as illustrated below. Included herein is trioxane. [figure] (3) Hexamethylenetetramine or derivative, e.g., as illustrated below. A derivative of this type requires the basic ring structure of hexamethylenetetramine but wherein the hydrogen atoms may have been replaced by other atoms. [figure]

(2) Note. Compounds having a methylol group (-CH2OH) bonded to atoms other than carbon, oxygen, or hydrogen are regarded for this subclass as being two compounds, one of which is formaldehyde. For instance, a methylol derivative of melamine is regarded as being a mixture of melamine and formaldehyde. Methylol urea is regarded as being a mixture of formaldehyde and urea.

(3) Note. Solid paraformaldehyde polymers will be regarded as reactants.

SEE OR SEARCH THIS CLASS, SUBCLASS:

403, for heterocyclic oxygen-containing reactants such as dioxolane, dioxepan, etc.

480+, for processes of preparing a polymer not involving a chemical modification of the polymer, by the addition of a material thereto, and for chemically modifying material other than the polymer. Subclasses 480+ also provide for processes of admixing with a broadly claimed nonreactant material.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition "aldehyde".

523, Synthetic Resins or Natural Rubbers,

1, for the distinction between that class and this area, and see in particular, section D in the class definition.

526, Synthetic Resins or Natural Rubbers, 315, for a polymer derived from an ethylenically unsaturated aldehyde as sole reactant or for an interpolymer derived from only ethylenically unsaturated reactants wherein at least one of the ethylenically unsaturated reactants contains an aldehyde group.