Marcus 500

Polyethylene 9002-88-4

Marcus Oil and Chemical

¿¹Ä¥ËðÐÔ >> À¯ Abrasion Resistance >> Wax ¿¹×èÖÍ¼Á >> À¯ Antiblocking agent >> Wax ¿¹¹Î/²Á/»®¼Á >> Ê¯À¯ Scratch/ Srcub/ Mar resistance agent >> Wax »¬¶¯¿ØÖÆ >> Ê¯À¯ Slip control >> Wax Ê¯À¯ >> ¾ÛÒÒÏ©À¯ Wax >> Polyethylene wax ÓÍÄ« Inks Í¿²ã Coatings Æû³µÔÊ¼Éè±¸ÖÆÔìÉÌOEM >> ±í²ã >> µ×Æá Automotive OEM >> Top coats >> Basecoat INKS >> Í¹°æÓ¡Ë¢»ú /±¨Ö½ INKS >> Letterpress / Newspaper INKS >> ÆÁÕÏÓÍÄ« INKS >> Screen inks INKS >> Æ½°æÓ¡Ë¢ºÍÓÍÄ«Æ½°æÓ¡Ë¢ INKS >> Lithographic and Offset Inks INKS >> ±½°·ÓÍÄ« INKS >> Flexographic inks INKS >> °¼°æÓ¡Ë¢ INKS >> Gravure The MARCUS range of low molecular weight polyethylenes are all derived from high density polyethylene(HDPE) under specific and stringently controlled conditions. This enables a series of very linear and therefore very crystalline polymers to be tailored. Because the products are very crystalline, they are hard and also have high melting points ranging from 90°C (194°F) to 116°C(241°F). Coating (Paints, Varnishes, & Lacquers) The nature of the characteristics of the Marcus polyethylenes are harnessed in dispersion, emulsion and micronized forms to great effect for a variety of applications in this field, the prime reasons for use being: Mar, scratch and abrasion resistance Slip modification Rheological modification Flatting The presence of fine particles of a hard polyethylene, both at and protruding from the surface of a film, reduces the coefficient of friction. This means that other surfaces do not directly abrade the surface, and thus mar, scratch and abrasion resistances are improved. The additional slip created also provides an external lubricating action, useful in finished metal which subsequently has to undergo forming. The addition of a dispersion to a varnish or lacquer reduces the gloss, having a flatting action. The extent of flatting depends upon many parameters and is not as great as with a colloidal silica. However, a polyethylene dispersion has very food transparency and smoothness, giving a soft silky feel. Most commonly the two are used in combination. The polyethylene dispersions possess thixotropic characteristics. Consequently they impart good anti-settling and anti-sagging feature to pigmented finishes. In this respect, the oxidized grades are of particular value and these rheology properties make them a goal choice for aluminum flake control in automotive base coat lacquers. Hot Melt Coatings These are coatings comprising very high levels of wax (mainly paraffin) together with an EVA and LDPE (or blend) and applied by curtain coating, for example, to corrugated board. The Marcus homopolymers are ideal components for use in this application due to their combination of inherent property parameters. Thus, their high melting points and hardness coupled with a very low melt viscosity aid in acheiving coatings with vastly improved characteristics. Improvements which can be obtained are: Better blocking resistance. Greater hardness and scuff resistance. Improved appearance. Superior barrier properties. Resistance to grease and water. Augmented strength (adhesion and cohesion). Printing Inks A major application area for which the Marcus polyethylenes are well suited when in the appropriate form (dispersion, micronized, and emulsion) is for addition to letterpress, lithographic, screen, gravure and flexographic inks. Also, particularly for the micronized grades, in overprint lacquers / varnishes. The nature of the wax for addition to printing inks is very important as it has to be of the correct structure, molecular weight and distribution in order to have a regular and fine particle size, and also possess adequate hardness to give optimum results. For example, if the structural features do not have the right balance, the particle size will be too large which will lead to an unacceptable reduction in film gloss, resulting in poor performance, particularly in offset inks where the fim thickness is around 5 microns. Further, if the wax is too hard then the inherent brittleness can give rise to a powdering problem. The MARCUS polyethylenes have a very good balance of properties which single them out for imparting valuable high performance attributes in inks whether it be from dispersion or from micronized and emulsified forms. The optimum results are secured with an addition level as low as 0.5% (on total ink solids). Broadly, the advantages are: Rub resistance improvement. Slip and anti - blocking properties. Minimum gloss reduction. Tack reduction. Reduced smudging tendency. Better abrasion and scratch resistance. Modification of rheological characteristics. Low molecular weight, high cristallinity, very linear polyethylene homopolymer wax. Used in paints, varnishes and lacquers, hot melt coatings and letterpress, lithographic, screen, gravure and flexographic inks. Offers hardness, high melting point and narrow distribution. Provides mar, scratch and abrasion resistance, slip modification, rheological modification, flatting and good anti-settling and anti-sagging feature. Improves blocking resistance, hardness, scuff resistance, appearance and barrier properties. Offers resistance to grease and water and augmented strength (adhesion and cohesion). Suits for use in automotive base coat lacquers.