Difference between revisions of "AYAA"

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== Description ==
 
== Description ==
  
[Union Carbide] A brand name for a low-molecular weight thermoplastic [http://cameo.mfa.org/materials/fullrecord.asp?name=polyvinyl acetate polyvinyl acetate] resin. AYAA has an average molecular weight of about 83,000. It does not contain any additives. AYAA is colorless initially but yellows with light aging (Down et al. 1996). It is often used as a hot melt adhesive where its minimum heat seal temperature is 60 C for 1.5 seconds.
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[Union Carbide] A brand name for a low-molecular weight thermoplastic [http://cameo.mfa.org/materials/fullrecord.asp?name=polyvinyl%20acetate polyvinyl acetate] resin. AYAA has an average molecular weight of about 83,000. It does not contain any additives. AYAA is colorless initially but yellows with light aging (Down et al. 1996). It is often used as a hot melt adhesive where its minimum heat seal temperature is 60 C for 1.5 seconds.
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
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== Authority ==
 
== Authority ==
  
* C.V.Horie, C.V.Horie, ''Materials for Conservation'', Butterworth-Heineman, London, 1997
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* C.V.Horie, ''Materials for Conservation'', Butterworth-Heineman, London, 1997
  
* Marie Svoboda, Marie Svoboda, Conservation Survey Index, unpublished, 1997
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* Marie Svoboda, Conservation Survey Index, unpublished, 1997
  
* Conservation Materials Ltd., Conservation Materials Ltd., Catalog
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* Conservation Materials Ltd., Catalog
  
* Jane Down, Maureen MacDonald, Jean Te'treault, Scott Williams, Jane Down, Maureen MacDonald, Jean Te'treault, Scott Williams, Adhesive testing at the Canadian Conservation Institute-An evaluation of selected poly(vinyl acetate) and acrylic adhesives., ''Studies in Conservation'', 41, 19-44, 1996
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* Jane Down, Maureen MacDonald, Jean Te'treault, Scott Williams, Adhesive testing at the Canadian Conservation Institute-An evaluation of selected poly(vinyl acetate) and acrylic adhesives., ''Studies in Conservation'', 41, 19-44, 1996
  
 
* Product Information  Comment: Union Carbide
 
* Product Information  Comment: Union Carbide

Revision as of 06:54, 24 July 2013

Description

[Union Carbide] A brand name for a low-molecular weight thermoplastic polyvinyl acetate resin. AYAA has an average molecular weight of about 83,000. It does not contain any additives. AYAA is colorless initially but yellows with light aging (Down et al. 1996). It is often used as a hot melt adhesive where its minimum heat seal temperature is 60 C for 1.5 seconds.

Synonyms and Related Terms

European equivalent is Mowilith 40; Vinylite (former name)

Other Properties

Soluble in acetone, toluene. Resistant to fats, greases, dilute acids and alkalis.

Viscosity = 7

Molecular Weight Tg =21 C
Refractive Index 1.467

Hazards and Safety

May release ethyl acetate, ethanol, water, acetaldehyde on aging.

Additional Information

Jane Down, Maureen MacDonald, Jean Te'treault and Scott Williams, Adhesive Testing at the Canadian Conservation Institute-An Evaluation of Selected Poly(Vinyl acetate) and Acrylic Adhesives", Studies in Conservation 41:19-44, 1996.

Authority

  • C.V.Horie, Materials for Conservation, Butterworth-Heineman, London, 1997
  • Marie Svoboda, Conservation Survey Index, unpublished, 1997
  • Conservation Materials Ltd., Catalog
  • Jane Down, Maureen MacDonald, Jean Te'treault, Scott Williams, Adhesive testing at the Canadian Conservation Institute-An evaluation of selected poly(vinyl acetate) and acrylic adhesives., Studies in Conservation, 41, 19-44, 1996
  • Product Information Comment: Union Carbide

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