Antiblocking agents silica-based

The Dylux 503 formulation contained a HABI, the leucodye TLA-454, a mixture of quinones, triethanolamine triacetate, several plasticizers, an organic acid, cellulose acetate butyrate binders, as well as antiblocking agents (fluorinated derivatives) as well as a silica derivative to provide tooth to the coating. The selection was made to provide maximum performance at minimum mill cost. The paper substrate required had high holdout, so as to permit two-sided coatings as well as to minimize the wicking of chemistry into the base. 

W. R. Grace markets silica-based antiblocking agents under the Sylobloc name. They are said to be tailor-made for specific film thicknesses and types. 

Ampacet Product 100520 is a mineral anti-block that does not require hazard labelling as it does not contain heavy metals or diatomaceous earth. At 2.5% usage the 20% loaded LDPE-carried anti-block attains 5000 ppm active antiblock, with films showing 96% light transmission and 12.8% haze. Slip and antiblock agents based on Dow s Affinity polyolefin plastomers include Ampacet 100329 (slip), which contains 5% erucamide, and 110342 (anti-block), which contains 20% diatomaceous silica. 

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