ο ο c w a t e r - soluble thermoplastic wi th pronounced adhesive , emulsifying and f i lm-forming proper t ies

G E N E R A L P R O P E R T I E S

SOLID—Tasteless, practically odorless, non-toxic—bulk density 04 to 0.6—specific gravity 1.21 to 1.31—can be heated indefinitely in air at temperatures below 130°C. without decomposition—readily plasticized to yield trans­lucent rubber-like articles when molded at 120—150°C. at 500 to 1500 psi—not attacked by common bacteria or fungi under ordinary conditions—readily soluble in water to form stable, solutions—shows limited solubility in polya-mines,amides,polyhydroxy compounds and liquid ammonia.

AQUEOUS SOLUTIONS—Solid content and viscosity may be varied independently over wide range. Plasticizers, wet­ting agents, fillers, and other modifying agents may be added directly to solutions to modify adhesive, emulsify­ing, or film-forming properties of polyvinyl alcohol. FILMS AND COMINGS—Easily prepared by evaporating water solutions. They are colorless, transparent, tough, un­affected by common oils, greases, fats and organic solvents —liighly impermeable to gases.

USES AMD A P P L I C A T I O N S

ALSO • · · POLYVINYL ACETATE

and POLYVINYL ACETATE

EIAULSÏONS

Knitting and weaving size for synthetic and natural textile fibers; greaseproofing and gasproofing fabrics; binder in print­ing pastes; adhesives for use on paper, textiles and various films; i n prepara­tion of non-blocking remois tenable ad­hesive coatings; emulsification of oils, fats, waxes, synthetic and natural gums and resins; greaseproofing and trans-parentizing paper; pigment: binder in paper coatings; improving writing and printing qualities of paper and paper board; improving wet and dry strength of paper. Molded grease- aad oil-proof, rubber-like sheeting for manufacture of

laminated textile fabrications, tubing, washers, gaskets, diaphragms, printing rollers, oil squeegees; binder for sand, clay and. ceramic mixtures before firing; binder for paper pulp modeling or mold­ing masses; binder, emulsifier, thickener and stabilizer in dispersions of decora­tive materials, shoe dressings, leather finishes, cosmetic and pharmaceutical preparations.

Film protection for highly finished or tarnishable surfaces; photosensitive coa t -ing for printing plates and decorating stencils; thickener for natural or syn­thetic rubber latices and resin emulsions.

Several grades of Polyvinyl Alcohol, each differing in physical and chemical properties, are commercially available, thus permitting a selection of the grade which is best suited to a particular application. At the present time the use of Polyvinyl Alcohol is restricted to uses covered by GPO-M-10. Small amounts, however, can be obtained for research and experimental investigations.

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DU PONT CHEMICALS YOU SHOULD INVESTIGATE

POLVUinVl HUDH0L Y - < a t ^ H 2 ^ R - C H 2 - C H ^ C H 2 - 0 H \ - C R 2 - \ Λ OH OH" . N, OH OH. / / /

DU P O N T EL ECTROCH EMICALS

BETTER THINGS FOR BETTER LIVING^. '. ...THROUGH CHEMISTRY

• Ι Electrochemical* Dept. Κ Ε 1 d a P o n t d e * e m o u r s &

β Wilmington 98, Delaware • Please eend me information on Polyvinyl Alcohol. ^ B ....Title •ME Name jjjjljl Firm Mjff Address 1̂ *, ,*, ' -^Ι-ΤΙ-Γ ΙΓΓ^ΒΧΒΒΡ'''"''^

These products are availabe to-day for you experimental, de-velopment and process work. They are supplied in a range of viscosities to meet your specific requirments. For complete details, just clip the coupon below.

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