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POLY(VINYL ACETATE) Produkt Beschreibung

POLY(VINYL ACETATE) Struktur
9003-20-7
CAS-Nr.
9003-20-7
Englisch Name:
POLY(VINYL ACETATE)
Synonyma:
ts2;ps3h;pvae;d50m;v501;ayaa;ayaf;ayjv;PVAc;76res
CBNumber:
CB3700594
Summenformel:
C4H6O2
Molgewicht:
86.08924
MOL-Datei:
9003-20-7.mol

POLY(VINYL ACETATE) Eigenschaften

Schmelzpunkt:
60°C
Dichte
1.191 g/mL at 25 °C
Brechungsindex
n20/D 1.467
Flammpunkt:
>100℃
storage temp. 
2-8°C
Löslichkeit
ketones, ethers and aromatic hydrocarbons: soluble
Aggregatzustand
pellets
Farbe
Clear
PH
3.0-5.5
Stabilität:
Stable. Incompatible with strong oxidizing agents, strong bases. Combustible.

Sicherheit

R-Sätze: 45-46
S-Sätze: 24/25
WGK Germany  3
RTECS-Nr. AK0920000
TSCA  Yes
HS Code  39051900

POLY(VINYL ACETATE) Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:

R45:Kann Krebs erzeugen.
R46:Kann vererbbare Schäden verursachen.

S-Sätze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.

Chemische Eigenschaften

transparent pellets or white powder

Chemische Eigenschaften

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.

History

Polyvinyl acetate was discovered in Germany in 1912 by Fritz Klatte.
The monomer, vinyl acetate, was first produced on an industrial scale by addition of acetic acid to acetylene with a mercury(I) salt[3] but it is now primarily made by palladium catalyzed oxidative addition of acetic acid to ethylene.

Verwenden

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.

Verwenden

drug delivery, hemodynamics, wound dressing, coatings

Definition

ChEBI: A polymer composed of repeating acetoxyethylene units.

synthetische

PVAc is a vinyl polymer. Polyvinyl acetate is prepared by polymerization of vinyl acetate monomer (free radical vinyl polymerization of the monomer vinyl acetate).

Hazard

Questionable carcinogen.

Industrielle Verwendung

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.

Sicherheitsprofil

Very low toxicity by ingestion. Questionable carcinogen. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS

läuterung methode

Precipitate it from acetone by addition of n-hexane.

POLY(VINYL ACETATE) Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


POLY(VINYL ACETATE) Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 94)Lieferanten
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21714 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20672 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32447 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30002 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23980 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 8921 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114
sales@amoychem.com CHINA 6372 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 sales@guangaobio.com CHINA 23049 58
BOC Sciences
1-631-619-7922
1-631-614-7828 inquiry@bocsci.com United States 20115 58
Chongqing Chemdad Co., Ltd
+86-13650506873
sales@chemdad.com CHINA 35440 58

9003-20-7()Verwandte Suche:


  • POLY(VINYL ACETATE) USP
  • Vinyl acetate emulsion adhesive,series
  • 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
  • polysolps10
  • polysols5
  • polysols6
  • protex(polymer)
  • ps3h
  • pvae
  • r10688
  • raviflex43
  • resyn25-1014
  • resyn25-1025
  • rhodopas
  • rhodopas010
  • rhodopas5000smr
  • rhodopas5425
  • Poly(vinyl acetate) average Mw ~100,000 by GPC, beads
  • Poly(vinyl acetate) average Mw ~500,000 by GPC
  • Poly(vinyl acetate) dispersion
  • Kollicoat? SR 30 D
  • Poly(vinyl acetate) dispersion 30 %
  • Poly(vinyl acetate) stabilized with polyvinylpyrrolidone and sodium lauryl sulfate
  • Polyvinyl acetate stabilized with povidone and sodium lauryl sulfate
  • Poly(vinyl acetate) average Mw ~140,000 by GPC
  • NINHYDRIN SOLUTION PHE
  • Polyvinyl acetate, MW ≈ 50,000
  • Poly(vinyl acetate), Average M.W. 101600
  • POLY(VINYL ACETATE) HYDROLYZED
  • POLY(VINYL ACETATE)
  • 76res
  • aceticacid,vinylester,polymer
  • Aceticacidethenylester,homopolymer
  • rhodopasa10
  • rhodopasam041
  • rhodopasb
  • rhodopasbb
  • rhodopashv2
  • rhodopasm
  • rv225-5b
  • sakunolsn08
  • s-nyl-p42
  • soloid
  • soviol
  • sp60(ester)
  • toabond2
  • toabond40h
  • bakeliteayaf
  • bakeliteayat
  • bakelitelp90
  • bondch1200
  • bondch18
  • bondch3
  • booksaver
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