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|Melting Point||88 Degree C to 102 Degree C|
POLYTONE K 88 is a neutral, unsaponificable ketone-aldehyde condensation resin. In general used incombination with other binders. On account of its wide compatibility and its efficiency, it is used to improvegloss, solid content and covering capacity in the most diverse paints systems. These resins are highlyeffective in imparting gloss, adhesiveness, leveling and also in increasing the solid content leading to areduction in the VOC.IndustrialApplications
POLYTONE A 88 is suitable for the manufacture of clear an pigmented nitrocellulose wood and metal finishesBecause of its favorable price and low colour number, POLYTONE K 88 forms a good base for themanufacture of bright clear lacquers as well as while enamels. These lacquers are generally characterized bygood adhesionPOLYTONE K 88 improves the pigment loading capacity of nitrocellulose lacquers so that even at highpigmentation an excellent gloss can be still ne achieved. In wood primers, POLYTONE K 88 nitrocellulosecombination lacquers containing 30%(calculated on basis of POLYTONE K 88) of maleic resin, coconut oil orground nut alkyd resin, or a fatty acid alkyd resin, are found to have a rapid solvent release and consequentlycan already be sanded after a short period of timeDue to its insolubility in aliphatic hydorcarbons, POLYTONE K 88 is suitable for the manufacture of finisheswhich have to be resistant to mineral oil. For the same reason, polishes containing white spirit may also beused on corresponding nitrocellulose polishing lacquersGood weathering resistance is achieved by combining POLYTONE K 88 with nitrocellulose, plasticizers andsuitable alkyd resins.POLYTONE K 88 acts as a hard resin in combination with soft resins and polychloroprene for the manufactureof adhesiveSolubility;-
POLYTONE K 88 is soluble in all solvents commonly used in the paint industry with the exception of
aliphatic hydrocarbons and alcohols.
Compatibility In order to test the compatibility of POLYTONE K 88 with binders, corresponding solutions were mixed in such
a way that 20% and 40% of resin, based on the respective binder, were added.After application to glass and drying, the dry films were assessed for appearance. Individual data are shown in