Cellulose ether, cationic

Gruber JV, Kreeger RL. Cellulose ethers, cationic. In Salamone JC, ed. Polymeric Materials Encyclopedia, Vol 2. Boca Raton, FL CRC Press, 1996 1113-1118. 

In evaluation of polymeric cationic cellulose ether derivatives to be used as ingredients for hair shampoos, developed specifically to improve performance... 

Carboxymethylcellulose, polyethylene glycol Combination of a cellulose ether with clay Amide-modified carboxyl-containing polysaccharide Sodium aluminate and magnesium oxide Thermally stable hydroxyethylcellulose 30% ammonium or sodium thiosulfate and 20% hydroxyethylcellulose (HEC) Acrylic acid copolymer and oxyalkylene with hydrophobic group Copolymers acrylamide-acrylate and vinyl sulfonate-vinylamide Cationic polygalactomannans and anionic xanthan gum Copolymer from vinyl urethanes and acrylic acid or alkyl acrylates 2-Nitroalkyl ether-modified starch Polymer of glucuronic acid... 

A new class of water-soluble materials [10,11], was developed as a result of such design parameters that will be referred to as double substituted cationic cellulose ethers (DCEs). These materials contain both a cationic substituent and a hydrophobic substituent, attached to a cellulose ether backbone. The use of a double-substituted hydrophobe modified cationic polysaccharide is fundamentally different from current commercial vaginal formulations, which rely exclusively on nonionic or anionic vehicles. 

Hydrophobe, cationic modifled cellulose ethers (DCFs) are drug delivery vehicles speciflcally designed to interact with mucosae. DCE s are closely related to cationic polysaccharides used safely and effectively for many years in topical personal care products. 

Shampoos - [ALKANOLAMNES - AL KANOLAMINES FROM OLEFIN OXIDES AND AMMONIA] (Vol 2) - [AMINE OXIDES] (Vol 2) - [COSMETICS] (Vol 7) - piSINFECTANTSAND ANTISEPTICS] (Vol 8) - [HAIRPREPARATIONS] (Vol 12) -cationic HECs [CELLULOSE ETHERS] (Vol 5) -coordination compounds m [COORDINATION COMPOUNDS] (Vol 7) -foams m [FOAMS] (Vol 11) -fragrances for [PERFUMES] (Vol 18) -ketoconazole treatment [ANTIPARASITIC AGENTS - ANTIMYCOTICS] (Vol 3) -lecithin m pECITHIN] (Vol 15) -PEO m [POLYETHERS - ETHYLENE OXIDE POLYMERS] (Vol 19) -sulfonates m [SULFONIC ACIDS] (Vol 23)... 

U.S. 5100657 (1992) Ansher-Jackson et al. (Procter Gamble) A mixture of conditioning agents silicone, cationic surfactant, and fatty alcohol nonionic long-chain alkylated cellulose ether as the primary thickener water-insoluble surfactant as a secondary thickener Provide cleaner hair conditioning does not have the dirty hair feel and quick resoiling of hair associated with quaternary ammonium... 

Spectroscopic evidence for association through the sharing of carboxylate cations has been reported (37) (the phenomenon is discussed in Chapter 15) for surfactant-acrylic acid copolymer interactions. This dependence on surface carboxylate groups (Figure 17) is not observed in cellulose ether or in HEUR 200 formulations. This observation is made in reviewing all of the data, and probably reflects only the extreme surfactant sensitivity of HEUR 200. 

A general conclusion that can be drawn from Table 51.3 is that charged polymers both anionic and cationic demonstrate a better mucoadhesive capacity in comparison to non-ionic cellulose-ethers or polyvinyl alcohol (PVA). 

TANNIC ACID 0 POLY VINYL METHYL ETHER POLY VINYL ALCOHOL CARBOXY METHYL CELLULOSE POLYACRYLAMIDE (CATIONIC)... 

Ohbu et. al studied the effect of the degree of quaternary ammonium substitution of cationic cellulose ethers on thekr binding of sodium dodecyl sulfate (SDS) using equilibrium dialysis, dye solubilization, solution density and NMR spin-lattice relaxation measurements. Structures were proposed for different SDS/polymer compositions. The concentration of polymer they studied was such that, at its nominal CMC, SDS was present in stoichiometric excess over the polymer. 

The present paper reports a more extensive rheological study of a series of mixed aqueous solutions of a cationic cellulose ether, at a higher fixed concentration, and the anionic surfactant SDS, at varying concentration. To summarize the solubility characteristics of such systems, there are three interaction zones which occur with increasing SDS concentration ... 

The cationic cellulose ether used is a Union Carbide Corporation product sold under the tradename UCARE Polymer JR-400. Its molecular weight is approximately 400,000. The sodium dodecyl sulfate is a high purity specimen obtained from British Drug Houses. Viscosity measurements on the solutions were carried out with a Saybolt viscometer at 25°C. The normal density corrections were applied. Shear dependent viscosity was measured at 25 C using the Haake Rotovisco viscometer, R-V3, with the MK 500 measuring head. The sensor system used was a coaxial cylinder type fitted with the MVI bob, having a radius of 20.04 mm. The radius of the stator is 21 mm. With this attachment, the range of shear rate and of viscosity is from 0.5 to 3000 sec"l, and from 8 to 10 centipoise, respectively. 

Winiuk EM, Regismond STA, Goddard ED. Interactions of an anionic surfactant with a fluorescent-dye-labeled hydrophicaUy-modified cationic cellulose ether. Langmuir 1997 13 111-114. 

Band PA, Leshchiner A, Pavlichko JP. Expanding the topical applications of hyaluronan through complexation and derivatization. Cosmet Toilet Manuf World 1994 243-246. Konish PN, Gruber JV. Surfactant-free formulations employing a synergistic complex between a hydrophobically modified, cationic cellulose ether and amylose. J Cosmet Sci 1998 49 335-342. 

The excipients used in solid dispersions can be broadly classified as (a) polymeric and (b) non-polymeric excipients. Polymeric excipients are the primary excipients, whereas the non-polymeric ones are the auxiliary excipients. Polymeric excipients are further classified based on their charge into the following categories (a) nonionic or non-pH-dependent and (b) ionic or pH-dependent polymers. Further, nonionic polymers are classified as polyvinyllactam polymers and cellulose ethers. The ionic polymers are further classified as cationic and anionic polymers (Fig. 4.2). 

Regismond STA et al (1999) Fluorescence microscopy observation of the adsorption onto hair of a fluorescently labeled cationic cellulose ether. Langmuir 15(8) 3007-3010... 

In the present study, hydrophobic interaction between hydroxypropylcellulose (HPC) and an ionic surfactant in an aqueous phase was discussed. HPC, as well as EHEC, is a nonionic cellulose ether which contains hydrophobic groups in its molecular structure. Therefore, it might be interesting to compare the complex-formation properties of HPC with that of EHEC. The surfactants used here were an anionic surfactant SDS and a cationic one cetylpyridinium chloride (CPC). HPC formed a complex with these surfactants, of which cloud point changed with the surfactant concentration in the same manner as that observed in the EHEC-surfactant systems [4]. Effects of the complex on stability of dilute and concentrated kaoiinite suspensions were also studied, taking physicochemical properties of the complex into account. 

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