Polyketon

CYTECH’s Polyketones are clear, pale, straw to water white resins which are very soluble in ethanol and exceptionally compatible with film-forming polymers such as nitrocellulose, vinyl, acrylics and polyamide resin.

STRUCTURE:

As polymeric condensation products of cyclohexanone and formaldehyde, these resins exhibit certain distinctive qualities based upon their chemical structure. The saturated ring structures that form during condensation account for gloss, hardness and for resistance to degradation and color loss in sunlight. In addition, the reaction with formaldehyde introduces polarity in the form of hydroxyl groups which accounts for desirable solubility and compatibility Characteristics. Hydroxyl polarity introduces qualities of pigment wetting and adhesion, as well as reactive sites of interest in various curing systems.

IN COATINGS:

Especially useful in clear color stable lacquers. Qualities of adhesion, gloss, leveling and percent nonvolatile in nitrocellulose lacquers can be materiallyimproved. Improves general utility and performance of paper coating lacquers. Extra hardness and faster solvent release are favored by the higher melt point type.

IN INKS:

Improved pigment wetting, gloss, adhesion, printability and higher solids can be expected when Polyketones are included in gravure and flexographic ink formulations. Gel points of polyamides are reduced and may permit more latitude in the choice of resins. Many adhesion problems on difficult substrates are overcome by the addition of Polyketones. Printing on Saran-treated cellophane is notable in this respect. Ball-point pen inks are reportedly improved in terms of flow and set. Suggested usage levels are3-15% of total solids.

TYPICAL PROPERTIES

COMPATIBILITY’S SERIES OF POLYKETONE RESINS

Compatible

X Not Compatible