Resin polyurethane

Solvents containing moisture-cured or two-pack polyurethane resin paints are also used extensively. They... 

Polyglycidyl Nit rata (Polyurethane) Propellants (PGN). A series of proplnt compns developed by both JPL of Cal Tech and the Aerojet-General Corp in the late 1950 s (Refs 2 3), using as the binder fuel a polyurethane resin prepd from PGN. JPL used either Amm Nitrate or Amm Perchlorate as the oxidizer (Ref 2), while Aerojet used Amm Perchlorate with plasticizers such as 4-Nitrazapentanonitrile (NPN) and 2,2-Pentanoate (TNENP) in a plasticizer-to-binder wt ratio of 0.6 (Ref 3). 

Polymerized Alcohols. Polyhydric alcohols (qv) such as pentaerythritol, sorbitol and glycerin can be used as the polyol component of polyethers (qv) which are used as expl and propint binders. Polyoxypropylene derivs of sorbitol have been employed extensively as components of polyurethane resins (qv), also employed as a propint binder... 

Diethanolamine salts with fluoroalkanol phosphates are used for presensitized lithographic printing plates. The plate has a partially exposed photosensitive layer containing a polyurethane resin having acidic H-containing substituent and... 

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. 

At a concentration of 5 to 25 wt %, increased the effective kill-life of the lindane spray up to 10 times. May have been used in chlordane and BHC insecticide formulations. In polyurethane resin adhesive adhesive containing 16 wt % PCB-1254. Also in formulations plasticized with 3 parts dioctyl phthalate and 1 part PCB-1254 to increase chemical resistance of various polyvinyl chloride (Monsanto, 1960.)... 

Tartaric acid-glycerol polyesters were reported in 1847 by Berzelius [13] and those of ethylene glycol and succinic acid were reported by Lorenzo in 1863 [14]. Carothers and Van Natta [15] extended much of the earlier work and helped clarify the understanding of the polyesterification reaction in light of the knowledge of polymer chemistry at their time. Polyethylene terephthalate [16, 17] and the polyadipates [18] (for polyurethane resins) were the first major commercial application of polyesters. 

Polyurethane resins are usually prepared by the reaction of a long-chain diol with an excess of the diisocyanate to obtain a prepolymef with terminal isocyanate groups [13] (Eq. 6). This prepolymer can react separately with... 

Aromatic amines as a compound class account for many of the known carcinogenic organic chemicals. Perhaps the most widely publicized compounds are benzidine and 3,31-dichlorobenzidine (DCB)(4>5)which until recently were widely used in the manufacture of dyestuffs. Another widely publicized suspected car-cinogenic aromatic amine is 4-methoxy-m-phenylenediamine (MMPDA)(6)which is used as an ingredient in many permanent hair dye formulations. 4,4,-methylenebis(2-chloroaniline) or MBOCA(Z)and 4,4-methylenedianiline (MDA) are widely used as curing agents in polyurethane resins and are said to be carcinogenic. ... 

In an earlier investigation by the authors (2) poly(carbonate-co-urethane) resins consisting of 1,6-hexanediol, dimethyl carbonate, and 4,4 -diphenylmethanedi-isocyanate were prepared and used as flexible thermoplastic polyurethane resins. 

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... 

URETHANE. [CAS 51-79-6], CO(NH2)OC2H5, also referred to as ethyl carbamate or ethyl urethane. Its structure is typical of the repeating unit in polyurethane resins. Colorless crystals or white powder, odorless, saltpeterlike taste. D 0.9862. mp 49C, bp 180C solutions neutral to litmus, soluble in w ater, alcohol, ether, glycerol, and chloroform slightly soluble in olive oil. Formed by the heating of ethanol and urea nitrate to 120-130% or by the action of ammonia on ehtyl carbonate or ethyl chloroformate. 

Encycl) with a binder (such as epoxy-polyamide, expoxy-anhydride, and polyurethane resins) and loading the resulting mixture into the annulus between the inner and outer parts of a cylindrical mold. After curing for 24hr, this cylindrical part of cartridge was attached to a noncombustible base(metallic or plastic), which served as an obturator... 

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