Thickening agents, adhesives

Use Adhesives, thickening agent, sizing paper and textiles, substitute for natural gums, food industry, glass-silvering compositions, printing inks, felt manufacture, substitute for lactose in penicillin manufacture, fuel in pyrotechnic devices. 

Acacia gum 9- ka-sho g3m n. Water-soluble gum obtained from trees of the acacia species, as an exudation from incisions in the bark. It is water soluble and is used as an adhesive, thickening agent and for transparent paints. Whistler JN, BeMiller JN (eds) (1992) Industrial gums polysaccharides and their derivatives. Elsevier Science and Technology Books, Amsterdam. 

Cellulosics. CeUulosic adhesives are obtained by modification of cellulose [9004-34-6] (qv) which comes from cotton linters and wood pulp. Cellulose can be nitrated to provide cellulose nitrate [9004-70-0] which is soluble in organic solvents. When cellulose nitrate is dissolved in amyl acetate [628-63-7] for example, a general purpose solvent-based adhesive which is both waterproof and flexible is formed. Cellulose esterification leads to materials such as cellulose acetate [9004-35-7], which has been used as a pressure-sensitive adhesive tape backing. Cellulose can also be ethoxylated, providing hydroxyethylceUulose which is useful as a thickening agent for poly(vinyl acetate) emulsion adhesives. Etherification leads to materials such as methylceUulose [9004-67-5] which are soluble in water and can be modified with glyceral [56-81-5] to produce adhesives used as wallpaper paste (see Cellulose esters Cellulose ethers). 

Thickening agents. When pseudoplasticity is necessary in NBR adhesives (spread coating operations, sprayed cements), carboxylic vinyl polymers can be added. 

Both acrylic acid and methacrylic acid polymerise to give water soluble hard resins. The viscous solutions so formed have been used as emulsifying agents, adhesives and as thickening agents for inks and dyes. Polymers of esters of these acids are of greater commercial importance. Esters can be prepared from cyanhydrins by reaction with an alcohol ... 

Thickening agent for various suspension and emulsion systems packaging film, wet-strength adhesive Automotive safety glass as the interlayer... 

Catalysis, soaps and detergents, paints, adhesives, and ink paper and paper coating pigments thickening agents and lubricants (see Vignettes 1.9 and IX)... 

A versatile group of highly effective acrylic thickening agents for use in aqueous adhesives and latex coatings. Suitable for use with many latex types including natural rubber, S.B.R., PV acetate, PVC, Polychloroprene, acrylic and nitrile. 

Protein produced from solvent-extracted meal has been used as a thickening agent in soups, baby foods, high-protein foods, instimtional meals, and meat products. Groundnut proteins have also been used to manufacture a soft, wool-like, cream-colored fiber, adhesive products such as plywood glue and wettable glue, and for paper coating. 

Table 6.1 Results of analysis of cyananoacrylate adhesives with and without thickening agent (PMMA) using calibration curve, standard addition and internal standard method for quantitative analysis of Nb content...

Results. The results in Table 6.1 are the determination of Nb complex salt added to cyanoacrylate adhesive as a tracer added at a concentration of 1.5 ig g 1 (ppm = 1500 ngg1) Nb using three non-destructive methods. The results obtained are similar to 0 % PMMA. Figure 6.1 shows the intensity of Nb in cyanoacrylate monomers with and without PMMA thickening agent. 

Trace metal analysis of anaerobic adhesives is best carried out using destructive techniques because of the high concentration of fillers and thickening agents added. These additives tend to interfere with trace metals from background noise, peak blooming, and the extent of dilution may exceed the detection limits and particle sizes may be too large to nebulise an anaerobic solution into the sample introduction orifice of the ICP-OES. 

The addition of thickening agents to paints, pharmaceutical products and adhesives has many functions and the most important is for flow behaviour, gap filling and wetting ability for paints and adhesives. They are added at variable concentrations to pharmaceutical... 

Use Pharmaceuticals, adhesives, inks, textile printing, cosmetics, thickening agent and colloidal stabilizer in confectionery and food products, binding agent in tablets, emulsifier. 

Use A scorch retarder in chloraprene and fluorelas-tomers, thickening agents for SMC/BMC acid acceptors in halogenated and chloroprene adhesives. 

Use Thickening agent, suspending agent, additive to adhesives. Permissible food additive. 

Use Thickening agent, tanning agent, binder for leaf tobacco, adhesives, wet-strength additive in paper. 

Contamination of persons with malodorous substances, such as mercaptans and amines, has been proposed as a means to deter less motivated rioters based on psychological and physiological effects such as olfactory repulsion and nausea (Whitten et al., 1970). They can be delivered by frangible missile, and addition of a thickening agent will prolong adhesiveness. 

---