Varnish formaldehyde resin

Protective coatings are the fourth major user of rosin, either directly or in a modified or derivative form. Varnishes and alkyds are the most common types of protective coatings using rosin. Rosin is combined with a heat-reactive phenol-formaldehyde resin to produce a widely used varnish. Printing inks also use substantial amounts of rosin. 

Chemical reactions in sources are well known from hydrolysis of urea formaldehyde resins in chipboard resulting in the emission of formaldehyde and from the hardening processes of many sealants, glues, and varnishes (Roffael, 1993). The emission of volatile compounds from these products may in some cases be limited by formation. 

Plywood and particleboard, affordable building materials, have been used in many facets of exhibition case design and storage. Unfortunately, these wood products are often bonded together with formaldehyde resins. As the resin cures over time, it will release formaldehyde vapors into the environment. In the presence of moisture, atmospheric formaldehyde will be converted to corrosive formic acid (36). In an attempt to diminish the acidifying effects of wood, coating and varnishes have been applied on the... 

The largest use of phenol-formaldehyde resins is in plywood manufacture. Other applications include lacquers and varnishes, cutlery handles, and toilet seats. Molded parts are used in distributor caps, fuse boxes, and other electrical outlets because of the superior dimensional stability and electrical properties of PF resins. Decorative laminates from PF resins are used for countertops and wall coverings, while... 

Snowtex 50 Snowtex C Snowtex N Snowtex 0 Snowtex OL Snowtex UP Snowtex ZL SR 9008 SR 9011 SR 9012 Syn Fac 8017 Syn Fac 8018 Syn Fac 8024 Syn Fac 8025 Syn Fac 8029 Syn Fac 8120 TC Terpene resin Ultrathene LIE 646-67 Uniplex 600 Urea-formaldehyde resin N-[2-(/lnylbenzylamlno)-ethyl)-3-amlnopropyltrlmethoxysllane adhesion promoter, coll coatings 2220 EFKA -3777 MIchem Prime 4983 Michem Prime 4983R adhesion promoter, cold blend varnishes CK-2400 CK-2500 adhesion promoter, difficult-to-wet substrate Hydropalat 875... 

Eastman Triacetin USP/FCC plasticizer, phenol-formaldehyde resins PEG-4 dibenzoate plasticizer, phenol-formaldehyde varnishes alkyd-modified PEG-4 dibenzoate plasticizer, phenolic laminates Lindol ... 

COC) 248 C ref. index 1.5252 Uses Plasticizer for PVAc adhesive formulations, phenol-formaldehyde resins, alkyd-modified phenol-formaldehyde varnishes Manuf./Distrib. ChemService http //www.chemservice.com, Noveon Kalama Velsicol http //www.veisicoi.com Trade Name Synonyms Benzoflex 200 f[Velsicol http //www.veisicoi.com]... 

Resorcinol-formaldehyde resin adhesion promoter, thermoplastics Bis (3-triethoxysilylpropyl) amine N-(n-Butyl)-3-aminopropyltrimethoxysilane 3-Glycidyloxypropyltriethoxysilane adhesion promoter, thermoset vinyl resins Methacrylatochromic chloride adhesion promoter, thermosets Bis (3-triethoxysilylpropyl) amine N-(n-Butyl)-3-aminopropyltrimethoxysilane 3-Glycidyloxypropyltriethoxysilane adhesion promoter, tile cements Methyl hydroxyethylcellulose adhesion promoter, UV cured metal coatings Dimethylaminoethyl acrylate adhesion promoter, varnishes Maleic resin... 

Curing agents in lacquers and varnishes based on urea formaldehyde resins... 

Heat-reactive phenolic resin n. Phenol-formaldehyde resin which has been manufactured under alkaline conditions and which reacts with oils, rosin, or other unsaturated components during varnish making, through the free methylol groups in its structure along with further condensation of the methylol groups in the resin. 

The main use for phenolic resins is in oleoresinous varnishes. Apart from the chemical-resistant finishes produced with epoxy resins (Chapter 14), other outlets include modification of alkyds to improve resistance to water and alkali, combination with urea-formaldehyde resins (Chapter 13) to provide metal coatings and combination with polyvinyl formal or butyral resins to produce wire enamels. 

Colophony (Rosin), 20% pet (coating on nails, pine dust, cement, varnishes, paint driers) (see Chap. 64) Paratertiarybutyl-phenol-formaldehyde resin, 1% pet (adhesives)... 

Beeswax, 30% pet (adhesives and waxes) p-tert-Butylphenol, 2% pet (glues, preservatives) Cobalt chloride, 1% pet (dryers in stains and varnishes) Mixed dialkyl thioureas, 1% pet Pentachlorophenol, 1% pet (wood preservatives) Phenol-formaldehyde resin, 10% pet (adhesives) o-Phenylphenol, 1% pet (preservative in adhesives) Polyurethane resins and catalysts Propylene glycol, 4% aq (varnishes)... 

Oil-soluble /7-butylated (/ A /-butylphenol-formaldehyde) resins are offered commercially by Union Carbide for coating and varnish applications [53]. 

These pure synthetic resins are made by reacting phenol with formaldehyde. There are two resin types one that is cooked into oil and used largely in trade sales and marine paints and another that is sold dissolved in a solvent and applied in that form and baked. The first resin type offers excellent water resistance and durability, making it ideal for exteriors, floors, porches, decks, and marine paints or varnishes. Since resin type 1 also offers fine chemical, alkali, and alcohol resistance, it can be used for furniture, bars, patios, and similar applications. In some instances, adhesion is rather poor. 

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