Binders good adhesion

Binders and Resins. The choice of binder is the most important ingredient choice in the formulation process because the binder affects the performance properties of a paint more than any other single ingredient (3). The physical properties of binders required for paints include the abiHty to dry or cure under various ambient conditions, good adhesion to various substrates, abrasion resistance, washabiHty, flexibiHty, water resistance, and ultraviolet light resistance. The balance of these required properties is mosdy dependent on whether the paint is being developed for interior or exterior appHcations. 

Poly(acrylic acid) is water soluble. Because of its water solubility and its ability to increase the viscosity of water, it is used as a thickener. It is also a good flocculent for sewage treatment and is added as a pigment dispersant in latex paints, and is used in binders and adhesives. Polymers and copolymers containing acrylic or/and methacrylic acid are manufactured at a rate of about 2,000,000 metric tons yearly. 

Pigments used in barrier coatings should also be hydrophobic in nature, and possess good adhesion across pigment-binder interfaces. Some typical pigments used are flat platey aluminum flakes, glass flakes, stailness steel flakes and micaceous iron oxide. 

The next key component deals with the selection of a binder or adhesive system. In addition to the adhesive characteristic offered by the wetting agents and dispersants it is generally necessary to incorporate a synthetic or natural gum to provide good green strength and integrity in the finish product. The selection process is a trial and error procedure. 

Acrylic acid ester dispersion, binder for fiber-fill, cross-linkable elastic non-sticky film, good adhesion to fibers, also finishing of industrial fabrics. 

Adhesion promoters are the substances that improve adhesive strength of paints in terms of its resistance against mechanical separation from the painted surface. A large number of different chemical adhesion promoters are available. These include silanes, silicones, titanium compounds, zirconates, amides, imines, phosphates, and specially modified polymers. Furthermore, there are binders, plasticizers, and additives, which have the secondary effect of providing good adhesive strength. Adhesion promoters can be used as additives to the paint formulation, or can be employed in the form of a surface pretreatment. 

Choice of an appropiate surface treatment and a suitable primer are important because adhesion to the substrates presents difficulties [11.37]. Primers based on modified alkyd resins or two-pack epoxy-resins for derusted ferrous metals mainly contain zinc phosphate and zinc OKide as corrosion protection pigments. Nonferrous metals are first washed with an ammoniacal wetting agent before applying the primer that contains a binder based on synthetic resins (e.g., PVC copolymers, chlorinated rubber) which ensure good adhesion to the substrate. The same primer must be used on zinc or galvanized surfaces because the use of alkyd resins causes embrittlement [11.38] The primed surfaces are largely topcoated with alkyd resin systems. 

An advantage of incorporating ECPs into a binder such as epoxy or polyurethane is the good adhesion that such binders provide, and the actual performance of coatings based on formulation may be due to the fact that the adhesion is better than that obtained by electropolymerization. However, this strategy leads to less contact between metal and ECP and, in view of the protection mechanisms described in Section 16.2, this may be to the detriment of the anticorrosion properties. 

The organic binder allows us to regulate the paste s viscosity, whereas the solvent helps to homogenize the ink s constituents. After the elimination of the organic compounds by thermal treatment, the deposit still has to have a good adhesion to the substrate. If that is not the case, we add a permanent binder to the paste which, after fusion, will ensure a good adhesion of the deposit on the substrate. 

CAS 50-00-0 EINECS/ELINCS 200-001-8 Uses Formaldehyde for mfg. of syn. resins by reaction with phenols, urea, melamines for molded goods, elec, insulation, binders, plywood adhesives, varnishes, wet-str. resins for paper and textiles chem. intermediate... 

Chem. Descrip. Carboxyiated styrene-butadiene latex Uses Binder for nonwovens, textile and upholstery backcoatings low crock pigment binder for general adhesives Features Soft, resilient hand above avg. str. props. self-crosslinking imparts good solv. and water resist., good tens, str., good adhesion to wide variety of fibers... 

Chem. Descrip. Polyester-modified methylphenylpolysiloxane resin with reactive release compd. in xylene/isobutanol/diglyme/dekaline, 17 9 8 1 Uses Binder for prod, of release coatings for industrial and domestic bakeware in resinous/polymeric food-contact coatings Features Good adhesion little thermoplasticity exc. dishwasher detergent resist. 

Because of the excellent solubility of PVP in water, the dissolution rate of many dmgs and compounds that are difficult to dissolve can be significantly improved if they are coprecipitated with PVP. PVP is amphiphilic in nature and is slightly surface active. It is frequently used in industries as a suspending aid and a protective colloid for polymers, emulsions, and lattices. PVP is also used as a dye stripper in the textile industry and in detergent formulation to prevent soil and dye redeposition. Because of its good adhesive and cohesive strengths and excellent water solubililty, PVP is one of the most widely used tablet binders... 

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