US PATENT SUBCLASS 507 / 121-- .~.~.~.~.~.~ Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.)

US PATENT SUBCLASS 507 / 121
.~.~.~.~.~.~ Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.)

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

Internet Version by PATENTEC © 1999 Terms of Use

507 /	HD	EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

100	DF	EARTH BORING {4}
103	DF	.~ Contains organic component {14}
117	DF	.~.~ Organic component is solid synthetic resin {1}
118	DF	.~.~.~ Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.) {5}
119	DF	.~.~.~.~ Polymer derived from acrylic acid monomer or derivative {1}
120	DF	.~.~.~.~.~ Nitrogen is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamide, acrylonitrile, etc.) {1}
121		.~.~.~.~.~.~ Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.)

DEFINITION

Classification: 507/121

Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.):

(under subclass 120) Composition wherein both nitrogen and sulfur are attached to the acrylic moiety through direct or indirect nonionic bonding, (e.g., acrylamidoalkylsulfonates, etc.).

(1) Note. A composition with nitrogen and/or sulfur as part of a mere counterion to an ethylenic moiety is not a basis for including such a composition in this subclass. For example, poly (N, N, N-trialkyl-aminoalkylacrylate) sulfate salt is included in subclass 120.