胶衣树脂用防浮色助剂ALTRI-SP-880S

Wetting and dispersing additive for ambient-curing plastic systems and so*ent-borne coatings to achieve pigment stabilization and to reduce fl ooding/fl oating. Contains silicone.

Solution of a low molecular weight, unsaturated acidic polycarboxylic acid polyester with a polysiloxane copolymer

The values indicated in this data sheet describe typical properties and do not constitute specific action limits.

Acid value:                   150 mg KOH/g

Density (20 °C):                0.95 g/ml

Non-volatile matter (10 min., 150 °C): 80 %

So*ents:                     Alkyl benzenes

Flash point:                   44 °C

Separation or turbidity may occur during storage and transportation. Mix well before use. Warm to 30-60 °C and mix well.

Special Note

White spirit-based coating systems or those that are diluted with white spirit have a limited compatibility.

Ambient-curing Plastic Systems

Special Features and s

Altri-SP-879S improves the dispersion of all conventional fillers, such as calcium carbonate and aluminum hydroxide. It reduces the viscosity of the filled resin, which enables increased filler content. In the majority of cases, the settling of the filler is significantly reduced during storage and when processing. Altri-SP-879S is suited to stabilizing pigments in gel coats. The additive also contains a small quantity of a polysiloxane copolymer to reduce fl ooding and floating. This prevents the formation of Bénard cells and improves the surface slip and leveling

0.5-1.5 % additive (as supplied) based upon the filler.

The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.

The additive provides a targeted, controlled fl occultation of the pigments. The system builds bridges between the individual pigment particles, thereby creating three-dimensional networks. This controlled

fl occultation of the pigments primarily prevents flooding/floating along with settling and sagging. Altri-SP-880S is suited to stabilizing pigments in industrial coatings and architectural coatings. It increases gloss, prevents floating and reduces the mill base viscosity. The additive also contains a small quantity of a polysiloxane copolymer to reduce flooding and floating. This prevents the formation of Bénard cells and improves the surface slip and leveling, and also the orientation of matting agents and aluminum pigments.

In the majority of cases, it is no longer necessary to add the silicone additives which are usually required.

Amount of additive (as supplied) based upon pigment:

Inorganic pigments:  3-10 %

Titanium dioxides:       1-3 %

Organic pigments:       8-16 %

The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.