Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Wash primer

Wash primers Wash test WASPALOY Wasserglass Wassermann antigen Waste... [Pg.1062]

Zinc tetroxychromate [13530-65-9] approximately 4ZnO ZnCrO xH20, has a somewhat lower chromate solubiUty than 2inc yellow and has been used in wash primers. [Pg.146]

The wash primer is a special type of vinyl coating. This material contains a poly(vinyl butyral) resin, zinc chromate, and phosphoric acid in an alcohol-water solvent. The coating is so thin it is HteraUy washed onto a freshly blasted steel surface, where it passivates the metal surface by converting it to a thin iron phosphate-chromate coating. The alcohol solvent makes it possible to apply the coating over damp surfaces. The coating forms the first coat of... [Pg.365]

Hypalon CP 826. This is a chloriaated, maleic anhydride modified polypropylene having a chlorine content of about 25% and maleic anhydride content of about 0.8%, developed to promote adhesion of inks and coatiags to polypropyleae or bleads containing polypropyleae. It has a solutioa viscosity of 125 mPas(= cP) at 20% soHds ia xyleae and can be used ia dilute solutioas as a wash primer or a tie layer betweea materials that are difficult to adhere. CP 827 is a higher molecular-weight analogue with a solution viscosity of 280 mPas(= cP) at 20% soHds ia 80/20 xylene/methyl isobutyl ketoae. [Pg.495]

The main application of poly (vinyl formal) is as a wire enamel in conjunction with a phenolic resin. For this purpose, polymers with low hydroxyl (5-6%) and acetate (9.5-13%) content are used. Similar grades are used in structural adhesive (e.g. Redux) which are also used in conjunction with phenolic resin. Poly(vinyl formal) finds some use as a can coating and with wash primers. Injection mouldings have no commercial significance since they have no features justifying their use at current commercial prices. [Pg.393]

Poly(vinyl acetal) itself is now of little commercial importance. The material may be injection moulded but has no particular properties which merit its use. It is occasionally used in conjunction with nitrocellulose in lacquers, as a vehicle for wash primers and as a stiffener for fabrics. [Pg.393]

A low acid polyvinyl butyral-based pretreatment primer ( etch or wash primer are alternative names) is usually advantageous as the first treatment of a metal-sprayed surface before painting. Up to an equal volume of spirit soluble phenolic resin is used as a diluent to the polyvinyl butyral of conventional pretreatment primers. This has an incidental, but particularly valuable effect, in reducing the free acid available to penetrate into the pores of the coating. The modified pretreatment primer is highly water resistant and this helps to avoid damage due to condensation. [Pg.431]

The prefabrication primers previously described are still current, the phenolic-reinforced wash primers being most widely used for general ship... [Pg.652]

While etch primers, also known as pretreatment primers and wash primers, can be regarded as priming paints which promote their own adhesion by etching the metal surface, they may also be regarded as phosphate/chromate etching treatments which leave an organic residue on the surface to form the basis of the subsequent paint scheme. A detailed account of the etch primers has been given by Coleman . [Pg.730]

Some dichromate conversion coatings and wash primers designed for corrosion prevention are suitable for adhesive bonding. [Pg.493]

Lead chromate pigments are mainly used as corrosion inhibitive pigments. These pigments are of low opacity and can be combined with higher opacity pigments for use in primers. Zinc chromate, also an anti-corrosion pigment, is used in metal pretreatments such as wash primer, which also promotes adhesion to aluminum and steel. [Pg.1306]

Major polymer applications safety glass interlayer (automotive windshields), control of light, heat and sound in construction glass, bulletproof glass, adhesives and sealants, binders for rocket propellant, photoconductive papers, magnetic tapes, powder coating, wood sealers and primers, inks, ceramic binders, dry toners, wash primers, composite fiber binders... [Pg.681]

Truck bodies are often constructed of steel frames with aluminum side walls. The aluminum alloys are pretreated by application of 5-8 pm of a chromate-containing wash primer. The topcoat is a two-pack acrylic resin bearing hydroxyl groups and is cross-linked with aliphatic isocyanates. [Pg.251]

The aluminum alloys used for aircraft construction are pretreated by anodizing, chromating, application of wash primer (6-8 pm), or pickling. [Pg.252]

Chem. Analysis 80% (polyvinyl butyral) 1.5% max. (polyvinyl acetate) Uses Polyvinyl butyral for coafings and adhesives binders for inks, toners, adhesives, and structural composites wash primers and general metal or wood coatings indirect food additive Features Thermoplastic imparts adhesion, toughness, and flexibility retains clarity of coating... [Pg.137]

Chem. Descrip. Dialkylamino alkanoate metal salt Uses Corrosion/rust inhibitor for coatings incl. water-redudble/conven-tional/high-solids alkyds, latex emulsions, vinyl butyral wash primers corrosion inhibitor in aq. systems with use of appropriate dispersant/ surfactant systems... [Pg.211]

Uses Corrosion inhibitor pigment for reactive coating systems and wash primers fungistat... [Pg.540]

Chem. Descrip. Based on calcium ion exchanged amorphous silica gel CAS 63231-67-4 EINECS/ELINCS 231-545-4 Uses Corrosion inhibitor, pigment for solv.-bome alkyd primers, coil coating primers, waterborne primers, solv.-bome two-part primers, wash primers... [Pg.741]

Uses Thixotrope for high polarity and oxygenated solv. systems such as nail lacquers, paints/coatings (nitrocellulose lacquers, sol n. vinyls, epoxies, acrylics, wash primers, inorg. zinc-rich primers, chlorinated mb-ber, unsat. polyesters)... [Pg.867]

Uses Green rust-inhibitive pigment for paints, primers catalyst dehydrogenation catalyst for hydrocarbons polymerization of olefins in wash primers... [Pg.1039]

Daxad 11KLS Potassium naphthalene-formaldehyde sulfonate dispersant, waiipaper pastes Drewsperse 470 dispersant, wash primers Disperbyk ... [Pg.1508]

Stronbum zinc molybdate phosphoslllcate pigment, corrosion inhibiting wash primers Moly-White 92 pigment, corrosion inhibitor Calcium molybdate... [Pg.1567]

See other pages where Wash primer is mentioned: [Pg.454]    [Pg.454]    [Pg.420]    [Pg.149]    [Pg.367]    [Pg.1078]    [Pg.54]    [Pg.454]    [Pg.454]    [Pg.355]    [Pg.420]    [Pg.136]    [Pg.793]    [Pg.346]    [Pg.35]    [Pg.89]    [Pg.197]    [Pg.910]    [Pg.261]    [Pg.1446]    [Pg.1455]    [Pg.1481]    [Pg.1572]    [Pg.1594]    [Pg.937]    [Pg.5858]   


SEARCH



Coatings and Wash Primers

© 2024 chempedia.info