Polyurethane resins, coatings

Resilient floor covering (nonrigid PVC)/floor coating (polyurethane resin) Polyurethane Spray... 

Polyols. Several important polyhydric alcohols or polyols are made from formaldehyde. The principal ones include pentaerythritol, made from acetaldehyde and formaldehyde trimethylolpropane, made from -butyraldehyde and formaldehyde and neopentyl glycol, made from isobutyraldehyde and formaldehyde. These polyols find use in the alkyd resin (qv) and synthetic lubricants markets. Pentaerythritol [115-77-5] is also used to produce rosin/tall oil esters and explosives (pentaerythritol tetranitrate). Trimethylolpropane [77-99-6] is also used in urethane coatings, polyurethane foams, and multiftmctional monomers. Neopentyl glycol [126-30-7] finds use in plastics produced from unsaturated polyester resins and in coatings based on saturated polyesters. 

Polyurethanes are frequently used in anticorrosion coatings. The R D drive of most coatings and resin producers is the reduction of the solvent content of the paint and resin systems. One method of achieving the environmental aims demanded by legislation in the PU coatings industry is to use oxazolidines which are suitable as latent hardeners to enable production of single-pack moisture activated PUs. The isocyanate chosen for this research is tetramethylxylene diisocyanate, which has been available commercially only since 1988. 19 refs. 

Several benzimidazolone pigments are suitable candidates for use in powder coatings based on polyester, acrylic, or polyurethane resin. These pigments satisfy the heat requirements of this application and do not plate out in these media (Sec. 1.6.4.1). Various benzimidazolone pigments even meet the particularly high thermal standards of coil coating. These pigments are also suitable for use in architectural and emulsion paints. 

Uses Solvent for uncured rubber, polyvinyl chlorides, vinyl chloride copolymers, 1,1-dichloro-ethylene copolymers, polyurethane coatings natural resins topcoating solutions cellophane magnetic tapes adhesives printing inks organic synthesis. 

H.F. Bluhm, USP 3256214(1966) CA 65, 9132(1966) [Prepn of explosive polyurethane resins, which are suitable for use as sensitive coatings for AN blasting compns and for prepn of foamed resin expls is described. The resins, which can be cured at RT, are prepd by reaction of an org poiyiso-cyanate with a nitric acid partial ester of a polyhydroxy compd including a component contg > OH groups reactive with the isocyanate. For example, equal parts by wt of an-hydroenneaheptitol nitrate (13.77 wt %N as... 

Protective Coating, Integral Fuel Tank Coating, Polyurethane, Rain, Erosion Resistant Resin-Acid Metal Pretreatment Compound for Aircraft Cement Rubber... 

Thermoplastic polyurethane resins were also prepared by the author [2] from 4,4 -methylene diphenylisocyanate with poly(3,3-bis-(2,2,3,3,4,4,4-hepta-fluorobutoxymethyl)-co-3-(2,2,3,3,4,4,4-heptafluorobutoxymethyl)-3-methy-loxetane) using dibutyltin dilaurate as catalyst and used in low surface energy coating applications... 

A carpet consists of a polymer textile which is typically laid on a wooden floor which is usually coated by a polymeric material such as polyurethane resin. For the Japanese-style floor, tatami, made of rush, the latter is composed of 46 % crude fibrous lipid and gummy material (Hirai et al., 1984) with properties considered to be similar to those of a polymer. Wallpaper on the ceiling and walls is... 

A number of aliphatic isocyanates find a variety of market niches in polyurethane resin and coating components. The largest volume aliphatic isocyanate is probably hexamethylene diisocyanate (HDI 1,6-diisocyanatohexane ex. Bayer), used as an intermediate in the production of, for example, polyurethane coatings for automobile refinishing, where it is particularly favoured for its resistance to chipping. 

Crystic Kollerdur. [Scott Bader] One-pack polyurethane resins for primers, sealers, coatings, or formulatimis such as aggregate-filled floors, pitch-ex-tend roofing systems. 

Morthane. [Morton Itat L] Polyurethane resins diermoplastic for inj. molding, extrusion, coatings, adhesives applies. 

OTHER COMMENTS useful in bonding rubber to rayon and nylon used in two-component polyurethane coating systems used for aircraft, tank trucks, and truck trailers also used to produce polyurethane lacquer coatings applied to certain automobile body components other uses are in production of thermoplastic polyurethane resins and spandex fibers. 

Anticorrosive primers are followed by a 40- 50 pm intermediate coat, based on two-pack polyurethane resins. This coat is sanded to yield a smooth surface. 

Various surface effects can be produced by varying the viscosity and adding coarse, possibly colored extenders or fibers. Two-pack systems based on polyurethane resins or epoxy resins are used for wall coatings that require a good resistance to agents used for chemical cleaning and decontamination. 

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