PVC塑溶胶

Release paper

We are facing some problems in separating the PVC film from the release paper. Do you have some products that can help?

For your special application, I would recommend either our BYK®-P 4100 or our new product BYK®-394. BYK®-P 4100 is free of silicones and waxes and complies with FDA § 175.300 as well as with EU Dir. 2002/72/EC, if this is a necessity for you. Dosage should be between 0.1-2.0. Our BYK®-394 is a silicone-free acrylic release agent which you could add at any stage of your production process. Dosage should be between 0.2-3.0.
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PVC stabilizer

Which kind of stabilizer should we use in PVC plastisol textile ink?

The stabilizer producers offer a range of different stabilizers. So please contact e.g. Bärlocher, Akzo or Ferro. These companies can give you advice.
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Discoloration during curing

I am experiencing color development - purple or pink - during the curing of my PVC plastisol. In addition to PVC resin and DINP plasticizer, there is surface-treated calcium carbonate and amidoamine adhesion promoter as well as CaO in the formulation. What is causing the color development, and do you have an additive that might prevent it?

In our tests with PVC plastisols, we never see a change in color to purple or pink. The only idea we have is that you are not using a stabilizer in your formulation.
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PVC plasticizer

I wonder if your company has used ATBC (acetyl tributyl citrate) in your production of plastisol ink. It is the substitute for DOP.

We are a producer of additives for the paint and plastics industry. We are not a producer of plastisol inks. As far as we know, DINP is used as a substitute of DOP.
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Pre-cat NC lacquer

Please suggest a defoamer when the NC lacquer is being applied by curtain coater and foam is building leading to residual bubbles on coated panels.

For the application you mention, I would suggest the usage of either BYK®-065 or BYK®-141. Dosage should be around 0.1 up to 0.5% form of delivery on total formulation.
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Wetting substrate

For the matting effect, I would suggest you prepare a matting agent concentrate with our DISPERBYK®-103 in combination with BYK®-410. Then you can achieve easy incorporation and obtain the highest matting efficiency. As an anti-settling additive I propose the use of BYK®-410. After incorporation it builds up pseudoplasticity within the system. The thixotropic flow behavior prevents settling and sagging. Regarding improved scratch resistance I would recommend to you our micronized wax called CERAFLOUR® 988. CERAFLOUR® 988 is a micronized amide-modified polyethylene wax additive with excellent dispersibility for solvent-borne and radiation curing systems. CERAFLOUR® 988 can be used for matting purposes and to improve the scratch resistance of coatings.
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Problem with a solvent-based (white spirit) colored wood preserver

You can influence the settlement either with some rheology additives or with the addition of wetting and dispersing additives. As a rheology additive I recommend our BYK®-411 or the NMP-free version BYK®-E 411 (if necessary). This additive gives you anti-settling properties in non-polar systems (such as you have). In addition, I would also recommend our BYK®-P 104 which is anionic and which produces a controlled flocculation of pigments and extenders and therefore prevents flooding / floating and hard sedimentation. BYK®-P 104 is suitable for medium to high polar systems.
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