
CAS 9003-20-7 POLY(VINYL ACETATE)
Synonyms: Vinyl acetate emulsion adhesive,series;POLY(VINYL ACETATE) USP;Polyvinyl Acetate (1 g);Poly(vinyl acetate), approx. M.W. 170,000 500GR;Poly(vinyl acetate), approx. M.W. 170,000;Poly(vinyl acetate), approx. M.W. 100,000;Poly(vinyl acetate) 235;Polyvinyl acetate, MW ≈ 50,000
CAS: 9003-20-7
MF: C4H6O2
MW: 86.08924
EINECS: 203-545-4
Product Categories: Polymers;Hydrophobic Polymers;Materials Science;Polymer Science;Vinyl Esters
POLY(VINYL ACETATE) Chemical Properties:
Melting point: 60°C
Boiling point: 70-150 °C
Density: 1.191 g/mL at 25 °C
refractive index: n20/D 1.467
Fp: >100℃
Storage temp.: 2-8°C
solubility: ketones, ethers and aromatic hydrocarbons: soluble
Form: pellets
Color: Clear
PH: 3.0-5.5
Stability: Stable. Incompatible with strong oxidizing agents, strong bases. Combustible.
HS Code: 39051900
Chemical Properties: transparent pellets or white powder
Chemical Properties: The degree of polymerization of polyvinyl acetate typically is 100 to 5000. The ester groups of the polyvinyl acetate are sensitive to base hydrolysis and will slowly convert PVAc into polyvinyl alcohol and acetic acid.
Under alkaline conditions, boron compounds such as boric acid or borax cause the polymer to cross-link, forming tackifying precipitates or slime.
Uses: As an emulsion in water, aPVAc emulsions are used as adhesives for porous materials, particularly for wood, paper, and cloth, and as a consolidant for porous building stone, in particular sandstone . Uses :
As wood glue PVAc is known as "white glue" and the yellow "carpenter's glue" or PVA glue.
As paper adhesive during paper packaging converting
In bookbinding and book arts, due to its flexible strong bond and non-acidic nature (unlike many other polymers). The use of PVAC on the Archimedes Palimpsest during the 20th century greatly hindered the task of disbinding the book and preserving and imaging the pages in the early 21st century, in part because the glue was stronger than the parchment it held together.
The stiff homopolymer PVAc, but mostly the more soft copolymer a combination of vinyl acetate and ethylene, vinyl acetate ethylene (VAE), is used also in paper coatings, paint and other industrial coatings, as binder in nonwovens in glass fibers. sanitary napkins, filter paper and in textile finishing
PVAc can also be used as coating to protect cheese from fungi and humidity.
Polyvinyl acetate is also the raw material to make other polymers like : Polyvinyl alcohol -[HOCHCH2]-: Polyvinyl acetate is partially or completely hydrolysed to give polyvinyl alcohol. This reversible saponification and esterification reaction was a strong hint for Hermann Staudinger in the formulation of his theory of macro molecules.
Polyvinyl acetate phthalate (PVAP): Polyvinyl acetate is partially hydrolyzed and then esterified with phthalic acid.
Uses: drug delivery, hemodynamics, wound dressing, coatings
Definition: A polymer composed of repeating acetoxyethylene units.
Industrial uses: Polyvinyl acetate is a leathery, colorless thermoplasticmaterial that softens at relatively lowtemperatures and that is relatively stable to lightand oxygen. The polymers are clear and noncrystalline.The chief applications of polyvinylacetate are as adhesives and binders for waterbasedor emulsion paints.
Vinyl acetate is conveniently prepared bythe reaction of acetylene with acetic acid.
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