Polyvinyl with isocyanates

Adipic acid can also polymerize with alcohols such as ethylene glycol to form polyesters, which can combine with isocyanates to form polyurethanes. Smaller esters of adipic acid produced with alcohols in the C-8 to C-10 range are called adipates. These are used as softeners in plastic (such as polyvinyl chloride) and as synthetic grease base oils. Adipic acid is also used in the food industry. Food grade adipic acid is prepared synthetically or extracted from beet juice as a natural source. It is used as a gelling agent, as an acidulant to provide tartness, and as a preservative. 

Polydithiazoles Polyoxadiazoles Polyamidines Pyrolyzed polyacrylonitrile Polyvinyl isocyanate ladder polymer Polyamide-imide Polysulfone Decompose at 525°C (977°F) soluble in concentrated sulfuric acid. Decompose at 450-500°C (842-932°F) can be made into fiber or film. Stable to oxidation up to 500°C (932°F) can make flexible elastomer. Stable above 900°C (1625°F) fiber resists abrasion with low tenacity. Soluble polymer that decomposes at 385°C (725°F) prepolymer melts above 405° C (76l.°F). Service temperatures up to 288° C (550°F) amenable to fabrication. Thermoplastic use temperature —102°C (—152°F) to greater than 150° C (302°F) acid and base resistant. 

Biologically Active Modification of Polyvinyl Alcohol The Reaction of Phenyl Isocyanate with Polyvinyl Alcohol... 

The advanced applications for nitrocellulose plastisol propellants require that they be integrally bonded to the motor case. Successful case bonding for the multiyear storage life of a rocket calls for special adhesives and liners which are completely compatible with these highly plasticized propellants. Best results have been obtained with a combination of an impervious rubber liner and a crosslinked adhesive system with a limited affinity for the plasticizers used in the propellants. Examples of effective liners are silica-filled butyl rubber and chlorinated synthetic rubber. Epoxy polyamides, isocyanate-crosslinked cellulose esters, and combinations of crosslinked phenol-formaldehyde and polyvinyl formal varnishes have proved to be effective adhesives between propellant and impervious liners. Pressure curing of the propellants helps... 

ACIDO CITRICO (Spanish) (77-92-9) Aqueous solution is a moderately strong organic acid. Incompatible with bases, strong oxidizers. Organic acids are incompatible with sulfuric acid, caustics, ammonia, aliphatic amines, alkanolamines, isocyanates, alkylene oxides, epichlorohydrin. Contact with metal nitrates may be explosive. Attacks aluminum, copper, zinc, and their alloys, when wet. Attacks polyvinyl alcohol. 

ACIDO CLOROACETICO (Spanish) (79-11-8) Combustible solid (flash point 258°F/126°C). Aqueous solution is a strong acid violent reaction with strong bases. Incompatible with sulfuric acid, ammonia, alcohols, aliphatic amines, alkanolamines, alky-lene oxides, epichlorohydrin, isocyanates, strong oxidizers. Attacks some plastics, rubbers, and coatings, including nitrile rubber, PVC, and polyvinyl alcohol. Attacks most metals in the presence of moisture. 

ACIDO METACRILICO (Spanish) (79-41-4) Combustible liquid (flash point 152°F/ 67°C oc). A reducing agent. Violent reaction with oxidizers, strong acids, alkalis. Unless inhibited (100 ppm of the monomethyl ether of hydroquinone is recommended), can polymerize violently. Polymerization can be caused by elevated temperatures, peroxides, sunlight, or hydrochloric acid. Incompatible with ammonia, amines, isocyanates, alkylene oxides, epichlorohydrin. Attacks metals, natural rubber, neoprene, nitrile, and some plastics including PVC and polyvinyl alcohol. The uninhibited monomer vapor may block vents and confined spaces by forming a solid polymer material. 

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