Polyol-treated antiblocking aid

Details Polyol-treated antiblocking aid Polyol-treated antiblocking aid

1995-06-07

1997-03-11

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106251, 106266, 10628726, 10628734, 252 28, 2523152, 2523156, 501 54, 501 55, 501154, 523200, 508136, C04B 1404

Patent

active

056096798

ABSTRACT:
The use of a composition based on silicon dioxide as antiblocking agent is described which is characterized in that it has silicon dioxide having a particle size of 2 to 8 .mu.m, a specific surface of 150 to 850 m.sup.2 /g and a specific pore volume of 1.4 to 2.0 ml/g which has been treated with polyol. This silicon dioxide can be used together with a slip agent as combined antiblocking agent and slip agent. The working-in of the antiblocking agent or of the combined antiblocking agent and slip agent into a polymer is preferably in the form of a masterbatch. A preferred antiblocking agent contains as polyol ethoxylated pentaerythritol in which the pentaerythritol/ethoxy ratio lies in the range from 1:0.5 to 1:25. The antiblocking agent can be obtained by micronizing silicon dioxide to the given particle size and impregnating it with the polyol.

REFERENCES:
patent: 4629749 (1986-12-01), Kitchel et al.
patent: 4675122 (1987-06-01), Luers et al.
patent: 5221337 (1993-06-01), Luers et al.
patent: 5298234 (1994-03-01), Nakazawa et al.
patent: 5366645 (1994-11-01), Sobottka

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