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Paints and Coatings Auxiliaries for the coating of surfaces - Clariant

Paints and Coatings Auxiliaries for the coating of surfaces - Clariant

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Polyurethane finishes<br />

> One-pack system<br />

It is difficult to produce a flatting<br />

effect in one-component polyurethane<br />

finishes with wax only. The<br />

basic flatting effect is best produced<br />

with silica, after which Ceridust<br />

9615 A, Ceridust 6721 or Ceridust<br />

5551 should be added to improve<br />

film properties such as h<strong>and</strong>le,<br />

scratch resistance <strong>and</strong> smoothness.<br />

> Two-pack system<br />

A finer silk-finish effect can be<br />

achieved in two-component polyurethane<br />

<strong>coating</strong>s with Ceridust<br />

9615 A, Ceridust 6721 or Ceridust<br />

5551. Film properties such as<br />

h<strong>and</strong>le, scratch resistance <strong>and</strong><br />

smoothness are also enhanced.<br />

Guide <strong>for</strong>mulation<br />

Desmophen solution (component A)<br />

Desmophen ®+ 1300<br />

75 % solution in xylene 32.0<br />

Nitrocellulose chips E 510 1.5<br />

Ethyl acetate 10.4<br />

Butyl acetate 11.0<br />

Methoxypropyl acetate 10.8<br />

Xylol 8.9<br />

Acronal 4L 0.2<br />

Baysilone OL 17 0.2<br />

Parts by weight 75.0<br />

Desmodur solution (component B)<br />

Desmodur ®+ IL 14.2<br />

Desmodur L 75 9.4<br />

Xylol 1.4<br />

Parts by weight 25.0<br />

24<br />

Mixing ratio<br />

component A:component B 3:1<br />

Binder content approx. 40 %<br />

Degree <strong>of</strong> crosslinking approx. 1<br />

Efflux time at 23 °C,<br />

DIN cup 4 mm,<br />

DIN 53 211 approx. 20 sec.<br />

Drying at room<br />

temperature <strong>of</strong> a<br />

150 µm thick wet film approx. 40 min.<br />

Acid-curing paints<br />

The quantity <strong>of</strong> wax <strong>and</strong> method <strong>of</strong><br />

incorporation are similar to those<br />

described in detail on page 18 dealing<br />

with nitrocellulose lacquers.<br />

Guide <strong>for</strong>mulation<br />

(white, silk-sheen curtain-<strong>coating</strong> paint)<br />

Note: can also be <strong>for</strong>ce-dried,<br />

e.g. 5 min. 120 °C<br />

Stock paint<br />

Vialkyd ®+ AM 421/80 IP 23.00<br />

Titanium dioxide RN 59 23.00<br />

Ceridust 9615 A 1.65<br />

Viamin ®+ HF 164/70 IB<br />

Collodium wool H 33<br />

45 % solution in<br />

25.00<br />

methylisobutyl ketone 5.70<br />

Dibutyl phthalate 1.00<br />

No air liquid ®+ 0.65<br />

Methoxypropylacetate 1.00<br />

Butyl acetate 10.00<br />

Isopropanol 3.00<br />

Additol VXL 6245 0.30<br />

Xylol 5.70<br />

Parts by weight 100.00<br />

Hardener<br />

p-toluene sulphonic acid 0.60<br />

Phosphoric acid butyl ester 0.40<br />

Butanol 9.00<br />

Parts by weight 10.00<br />

Mixing ratio<br />

stock paint : hardener 10 : 1<br />

Tack-free drying approx. 15 min.<br />

Efflux time at 23 °C,<br />

DIN cup 4 mm,<br />

DIN 53 211 approx. 40 sec.<br />

Guide <strong>for</strong>mulation<br />

(colorless silk-sheen paint)<br />

Note: Two-pack system with good<br />

body <strong>for</strong> furniture<br />

Stock paint<br />

Vialkyd AM 421/80 IP 49.40<br />

Viamin HF 164/70 IB 28.30<br />

Additol VXL 6245 0.30<br />

Ceridust 9615 A 1.00<br />

Xylol 16.50<br />

Butyl acetate 4.50<br />

Parts by weight 100.00<br />

Hardener<br />

p-toluene sulphonic acid 1.35<br />

Ethanol 8.65<br />

Parts by weight 10.00<br />

Mixing ratio<br />

stock paint : hardener 10:1<br />

Tack-free drying approx. 10 min.<br />

Efflux time at 23 °C,<br />

DIN cup 4 mm,<br />

DIN 53 211 approx. 70 sec.

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