Adhesives, water-soluble polyester

We synthesized a new class of water-soluble polyester adhesives. We demonstrated that to ensure very strong adhesive properties certain compositional boundaries must be maintained. The optimal composition is the following ... 

Azelaic acid (AA), 1,9-nonanedioic acid or heptane-1,7-dicarboxylic acid, is used in manifold application areas. AA is offered in the pharmaceutical field for the treatment of acne and rosacea due to its antibacterial effect [1,2]. However, AA is much more widely applied as a monomer for the production of polymers such as alkyd resins, polyamides, and impact-proof polyesters or for the synthesis of plasticizers, lubricants, lithium complex greases, corrosion inhibitors, dielectric fluids, heat-transfer fluids, metal to glass fluxes, emulsion breakers, waxes, tobacco sheet plasticizers, hot-melt coatings and adhesives, water-soluble coating resins, hydraulic fluids, fungicides, insecticides, and so on [3-7]. 

Polymer I was an amorphous water-soluble polymer with an inherent viscosity of 0.33 and a Tg of 26°C. The Mn and were 6,419 and 15,546 respectively. The ionic polyester displayed excellent adhesive properties as shown in Figure 1. Absolute peel force values could not be obtained... 

Several terpolymers of DHA and NVP with HEA, HEMA, HPMA, or GMA were prepared and evaluated as film formers and adhesion promoters for polyester-rubber systems. All the copolymers were water soluble. However, cast films became water insoluble when heated (150°-200°C) because of the cross-linking reactions between isocyanate-hydroxyl or isocyanate-epoxide residues. Data from the terpolymerization experiments are presented in Table IX. 

The commercial polymers have molecular weights of up to 100,000 g/mol and ratios of primary-.secondary tertiary amino groups of 1 2 1. They are used as adhesives (e.g., bonding polyester cord to rubber), paper additives, etc. Quaternized poly(ethylene imines) form water-soluble polycations and are used as flocculants in the processing of tap water. 

A broad range of monomers with relatively low water solubility have been polymerised by conventional emulsion polymerisation. Acrylics, methacrylics, styrene and vinyl acetate are the most common monomers used in preparing latexes for paints, textile binders, and adhesives. Acrylic, polyester, epoxy and urethane dispersions are used in industrial coatings, where higher strength is required. Butadiene is often copolymerised with styrene in producing synthetic rubber for tyre manufacture. 

Other than the hydrocarbon elastomers and acrylics, and to a smaller degree silicones, little success commercially has attended efforts to utilize other polymers for PSAs. The patent literature describes a number of water solubles, suitably crosslinked, as the base ingredient for repulpable adhesives on paper backings used to splice rolls during papermaking operations. The patent literature also reveals efforts to utilize polyurethanes, polyurethane-acrylic hybrids, ionomers, and polyester block elastomers, among others, but only repulpable adhesives have reached the marketplace. Two systems that have achieved mentionable commercial success are described below. 

With few exceptions, all substances with an antimicrobial effect as well as those which are used for textile finishing are non-water-soluble. One exception is the cation-active and very thermostable poly-(hexamethylene biguanide) hydrochloride (PHMB), which is available in the form of an aqueous solution, e.g. Sanitized T 96-04. Unfortunately however, PHMB is unsuitable for finishing most synthetic fibers, for the reason that it exhibits practically no adhesive power with polyamide or polyester fibers. 

Much attention has been paid to the synthesis of fluorine-containing condensation polymers because of their unique properties (43) and different classes of polymers including polyethers, polyesters, polycarbonates, polyamides, polyurethanes, polyimides, polybenzimidazoles, and epoxy prepolymers containing pendent or backbone-incorporated bis-trifluoromethyl groups have been developed. These polymers exhibit promise as film formers, gas separation membranes, seals, soluble polymers, coatings, adhesives, and in other high temperature applications (103,104). Such polymers show increased solubility, glass-transition temperature, flame resistance, thermal stability, oxidation and environmental stability, decreased color, crystallinity, dielectric constant, and water absorption. 

Ageflex FM-1Q80DMS EINECS 229-995-1 Ethan-aminium, N,N,N-trimethyl-2-((2-methyl-1-oxo-2-prop-enyl)oxy)-, methyl sulfate Ethanaminium, N,N,N-trimethyl-2-((2-methyl-1-oxo-2-propenyl)oxy)-, methyl sulfate (2-(Methacryloyloxy)ethyl)trimethylammonium methyl sulphate. Antistatic finish for polyester fibers, flocculant and coagulant for industrial process water treatment, flocculant for mineral recovery, ion exchange resins, adhesives, xid dye receptivity, electrostatic coatings on wood, retention aids for paper. Solid soluble in H2O, d = 1.183 cationic. Rit-Chem. 

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