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When using, the super-fine Aluminum Silicate must be dispersed uniformly, otherwise it may tackify the latex paint.

It is common technology at home and abroad to replace titanium dioxide with super-fine Aluminum Silicate in coating industry, which makes obvious benifit. In semi or naught latex paints, the suitable dosage of super-fine Aluminum Silicate is 15-25% dosage of Titanium Dioxide (and 4-6% of gross of the coating). But it may vary due to different formula. We suggest testing our sample before using our product largely.

Following table shows different formulas and different final results, from which you could find which one holds good property.

Table 1:

Formula
Contents

Formula (1)

Formula (2)

HAVE AS881

without AS881

HAVE AS881

without AS881

Water

24.7

24.7

41.2

41.2

Mergal los

0.3

0.3

 

 

preventol

 

 

0.2

0.2

Ethylene glycol monoethyl ether

 

 

1.5

1.5

Lithopone

35.0

40.0

 

 

Titanium dioxide,anatase

 

 

7.0

12.0

Super-fine Aluminium Silicate

5.0

 

5.0

 

Talcum powder

4.0

4.0

4.0

4.0

Calcium carbonate

6.0

6.0

17.0

17.0

?Barium sulfate

 

 

4.0

4.0

Walpo 19120

25.0

25.0

 

 

Propiofan50

 

 

20.0

20.0

Pigment Dispersant

 

 

0.1

0.1

PVC %

55.5

54.2

60.2

57.7

Refraction R

0.781

0.7158

0.7725

0.7625

Envelop R

12.7

9.9

12.3

12.2

Table 2:

Formula
Contents

Formula (3)

Formula (4)

HAVE AS881

NOT AS881

HAVE AS881

NOT AS881

Water

16.4

16.4

8.5

8.5

Mergal los

0.6

0.6

0.1

0.1

Dispersant Sodium sulfate

1.0

1.0

 

 

Dispersant Sodium triphosphate

 

 

0.2

0.2

Pigments Dispersant A TYlose

 

 

0.2

0.2

Hydroxyethyl cellulose MH1000(3%)

 

 

18.0

18.0

Glycol

2.0

2.0

 

 

Zinc Oxide Goldstone ()

15.0

20.0

 

 

Zinc Oxide Goldstone ()

 

 

14.0

18.0

Aluminium Silicate

5.0

 

6.0

 

Talcum powder

5.0

5.0

5.0

5.0

Bleaching Clay

10.0

10.0

 

 

Barium sulfate

 

 

6.0

6.0

EWD powder

 

 

0.3

0.3

Defoaming agent(NOPCO NDW)

 

 

0.2

0.2

Pine oil

40.0

40.0

 

 

Liquid (Mowjlith DO25U)

 

 

34.0

34.0

Liquid (Lifex F)

 

 

1.5

1.5

methanol

40.4

37.6

42.6

40.0

PVC %

103.25

90.07

56.68

52.05

Covering D (m/l)

15.5

14.0

8.9

8.5

From the above test, we find the formula mixing AS881 has excellent covering property, and Even after perennial storage, there is no sediments or water-separation. The optical property will be also improved obviously if replacing super-fine Aluminium Silicate with part of Titanium Dioxide and other white pigments. The effect will be different if it is used in different latex, which is due to the wet-dispertion of super-fine Aluminium Silicate is different in different latex.
     
   
   
   
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