Chemical synonyms: Polyvinylformalethynal; Polyvinylformalacetal resin.

 

 

 

Appearance         =Lumps up to 40 mm, from white to light yellow COLOR

 

formal                 7-14      8.06%

ethylal                58-74     61.47%
 

acid value             0.4max    0.28kohmg/g
 

water content          2.0max    1.52%
 

viscosity             200-2000   650mpa.s 

 

Viscosity mesured of 10%-solution in solvents chlorbenzene : 2- ethoxyethanol (1:1). Viscosimeter Dia 5,4 mm), sec       = 20-60

 

 

Chemical Structure:

 

 

 

 

Application: the resin is used in production of insulating,  polyurethane varnishes and heat-resistant  phenolphormaldehydepoly-vinylacetal glues.

Wire enamels (coatings)

Magnetic Tapes

Adhesives