Specification :

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