Other

Board of Regents for the Oklahoma Agricultural & Mechanical Colleges

Rohm and Haas Company

Oklahoma State University

Warren T Ford

Kenneth D Berlin

Rama S Chandran

Mahmoud Hassanein

Shirish N Rajadhyaksha

Hayrettin Turk

Lyle W Spruce

Jonathan B Gale

James Watson Neely

Berni P Chong

Mark D Thompson

Glenn H Beasley

Elizabeth M Holt

Shuhui Qin

Subramaniam Mohanraj

A method comprising forming and grafting polymers on carbon nanotubes, a functionalized product and product dispersion produced by the method, a method of forming composites from the functionalized carbon nanotubes, and the composites produced therefrom.

Polymers grafted to carbon nanotubes

Colloidal suspensions of charged polymer particles containing charged metal complexes are prepared from charged polymer colloids by ion exchange. The charged polymer latex particles containing the metal complex are characterized as ranging from about 0.01 to 1.5 micrometers in diameter and containing from about 0.01 to 3.0 millimoles of metal complex per gram of dry polymer and are useful for catalysis of chemical reactions in aqueous dispersions.

Polymer latexes containing metal ions and complexes

Novel heteroarotinoid compositions characterized by the formulae: ##STR1## where: X is S or O; OAc is the acetate group ##STR2## and R is --H, --OH, --OCH.sub.3, or --OC.sub.2 H.sub.5 and includes ##STR3## for formulae (1) and (2). Such compositions exhibit activity as anticancer agents.

Heteroarotinoids as anticancer agents

Novel heteroarotinoid compositions characterized by the formulae: ##STR1## where R is H, CH.sub.3 or C.sub.2 H.sub.5 and X is S, S O, O, NCH.sub.3, Si(CH.sub.3).sub.2, N.sup.+ (H)CH.sub.3 [Cl.sup.- ], N.sup.+ (H)CH.sub.3 [Br.sup.- ] or N.sup.+ (alkyl) CH.sub.3 [Cl.sup.- or Br.sup.-) where alkyl is CH.sub.3, C.sub.2 H.sub.5, CH.sub.2 .dbd.CHCH.sub.2 or C.sub.6 H.sub.5 CH.sub.2. Such compositions exhibit activity as anticancer agents.

Heteroarotinoid compounds as anticancer agents

A method for chlorinating the pendant methyl groups of poly(p-methylstyrene) with aqueous sodium hypochlorite (e.g., laundry or swimming pool bleach) and a phase transfer catalyst (e.g., benzyltriethylammonium chloride) to provide chloromethyl-substituted polystyrenes. Conversions of up to 20 percent of methyl to chloromethyl groups were achieved with no detectable formation of dichloromethyl groups. Conversions of up to 61 percent of methyl to chloromethyl groups occur with less than 4.4 percent concomitant formation of dichloromethyl groups. The method has been applied to soluble, 1 percent cross-linked, and macroporous 20 percent cross-linked polymers.

Method of chlorinating methyl groups of methyl vinyl aromatic polymers

Macroporous styrene polymer particles which have been partially pyrolyzed at temperatures between 300.degree. and 800.degree. C. to form non-functionalized, carbonaceous adsorbents, are functionalized according to this invention to produce weak base, strong base, weak acid or strong acid, dense ion exchange particles, or precursors thereof, using such reactions as halogenation, sulfonation, chloromethylation, chlorosulfonation and oxidation, alone or followed by aminolysis or other conventional functionalization reactions.

Ion exchange material prepared from partially pyrolyzed macroporous

Growing community of inventors

Stillwater, OK, United States of America

Warren T Ford