POLYKETONES:

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

HI-REZ KR-100 is a transparent solid granules, alcohol soluble, aldehydeketone resin having a broad range of compatibility. HI-REZ KR-100 offers very good solubility in spirit & very good compatibility with shellac. Suitablyformulated combination of HI-REZ KR-100 with nitrocellulose resin and addition of phthalate plasticizers with a certain proportion of polyurethane resin can be used for flexo graphics & gravure printing inks, ball point inks, preparation of polishers, polishing varnishes and lacquers for the surface treatment of wood & paper lacquers. This unique chemistry significantly improved adhesion, pigment wetting and gloss. Typical usage levels range from 3% to 15% of total formulation. Inks and coatings utilizing HI-REZ KR-100 show improved inner-coat adhesion, offers a good light fastness to inks, ideal for base primers or coatings. Being low in viscosity, it permits the formulation of high solids, coating and the reduction of high viscosity polymers.

Typical Applications

HI-REZ KR-100 is a best & very suitable for use in laminating inks, paper inks, paper coating, flexo graphic & gravure ink formulations.

• Flexo & gravure inks
• Paper inks
• Ball point pen inks
• Wood primer

• Paper coatings
• Surface coatings
• Nail varnishes
• Vinyl sealers & coatings

Typical Properties

Solubility:

Ethanol, N-Butanol, Iso-Butanol, Acetone, MEK, Cyclohexanone, MIBK, Phenoxy Glycol, Xylene

Packing:

25 Kgs sealed packed paper or plastic bags.

Safety & Handling:

All relevant data have been brought up-to-date in the Material Safety Data Sheet.

• Cellulose lacquers
• Nail varnishes

• Ball Point Inks
• Surface coatings

Typical Properties

Compatible

Ethanol, N-Butanol, Iso-Butanol, Acetone, MEK, Cyclohexanone, MIBK, Phenoxy Glycol, Xylene

Packing:

25 Kgs sealed packed paper or plastic bags.

Safety & Handling:

All relevant data have been brought up-to-date in the Material Safety Data Sheet.

HI-REZ KR-1000 is a pearl shaped solid granule, which offers very good light fastness, neutral reaction and resistance to saponification of synthetic resin. HI-REZ KR-1000 is very much suitable for flexographic inks, gravure inks & ball point pen inks due to its high viscosity, high softening range, excellent thixotropic property & excellent solubility. Compatibility with shellac and hardness are the useful factors of HI-REZ KR-1000 for the preparation of paper lacquers, polishers, polishing varnishes and lacquers for the surface treatment of wood; suitably formulated combination of synthetic resin HI-REZ & nitrocellulose containing in addition to phthalate plasticizers. A certain proportion of alkyd resins are suitable for wood lacquers and distinguished for their elasticity and resistance to the cold check test.

Typical Applications

HI-REZ KR-SP is a best & very suitable for use in laminating inks, paper inks, paper coating, flexo graphic & gravure ink formulations.

• Flexographic inks
• Gravure inks
• Ball point pen inks

• Paper coatings
• Wood lacquers & polishing varnishes

Typical Properties

Solubility:

Ethanol, N-Butanol, Iso-Butanol, Acetone, MEK, Cyclohexanone, MIBK, Phenoxy Glycol, Xylene

Packing:

25 Kgs sealed packed paper or plastic bags.

Safety & Handling:

All relevant data have been brought up-to-date in the Material Safety Data Sheet.