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Polyvinyl with butyraldehyde

In the second major use of VAM, PVA is converted to poly(vinyl alcohol) (PVOH) by a transesterification reaction with methanol, giving methyl acetate as coproduct. PVOH finds its major end use in textile sizing and adhesives. Further reaction of PVOH with butyraldehyde or formaldehyde gives polyvinyl butyral (PVB) or polyvinyl formal, which together constitute the third largest consumption of VAM. PVB is used almost exclusively in the adhesive laminating inner layer in safety glass. [Pg.367]

Polyvinyl acetals PVB With butyraldehyde Butvar, Butacite PVB... [Pg.20]

Polyvinyl butyral resins n. A member of the polyvinyl acetal family. Resins formed by reacting polyvinyl alcohol with butyraldehyde. It is a rough, sticky, colorless, flexible solid, used primarily as the interlayer in automotive safety glass. Other applications include adhesive formulations, base resin for coatings, solutions for rendering fabrics resistant to water, staining, and abrasion. [Pg.772]

Polyvinyl formal is made by the condensation of formaldehyde in the presence of polyvinyl alcohol. Polyvinyl butyral is a thermoplastic material derived from a polyvinyl ester in which some or aU of the acid groups, have been replaced by hydroxyl groups, and some or aU of these hydroxyl groups are replaced by butyral groups by reaction with butyraldehyde. It is a colorless, flexible, tough solid. [Pg.451]

The PVB layer is generally prepared by treating polyvinyl alcohol with butyraldehyde. [Pg.1288]

Polyvinyl alcohol (PVOH or PVA) fiber is a water-soluble fiber when it is reacted with butyraldehyde and formaldehyde. Polyvinyl acetyls can be obtained, which is called artificial cotton. PVA has a melting point of 230°C and 180—190°C for the fuUy... [Pg.46]

Reaction of PVOH with butyraldehyde or formaldehyde gives products of commercial significance. Two of these are polyvinyl butyral (PVB) and polyvinyl formal. These are examples of useful resins made by modifying modified polymers. The latter is made into a varnish for coating wire and cable, and the former is extruded into sheet. Large quantities of PVB are used for the energyabsorbing layer in auto windshields. [Pg.669]

Phthalic anhydride s main use is for producing plasticizers by reactions with C4-C10 alcohols. The most important polyvinyl chloride plasticizer is formed by the reaction of 2-ethylhexanol (produced via butyraldehyde. Chapter 8) and phthalic anhydride ... [Pg.297]

Butyraldehyde is used mainly as an intermediate in the production of synthetic resins, rubber vulcanization accelerators, solvents, and plasticizers. It reacts with polyvinyl alcohol to form polyvinyl butyral which is used as an interlayer for safety glass as well as for coating fabrics. Isobutyraldehyde is used as a solvent or plasticizer in the plastics industry, or as a raw material in the synthesis of isobutyl alcohol, methacrylic acid, neopentyl glycol, etc. [Pg.184]

Butyraldehyde byu-t9- ral-do- hld [ISV] (ca. 1885) (butaldehyde, n-butanal, n-butyl aldehyde, butyric aldehyde) n. An aldehyde sometimes used in place of formaldehyde in the production of resins. Butyraldehyde reacts with polyvinyl alcohol to form polyvinyl butyral. It is used in the... [Pg.143]

See other pages where Polyvinyl with butyraldehyde is mentioned: [Pg.772]    [Pg.576]    [Pg.826]    [Pg.188]    [Pg.772]    [Pg.1020]    [Pg.261]    [Pg.3600]    [Pg.113]    [Pg.31]    [Pg.25]    [Pg.1276]    [Pg.168]    [Pg.140]    [Pg.494]   
See also in sourсe #XX -- [ Pg.85 ]



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