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Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
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Materiale Plastice (Mater. Plast.), Year 2005, Volume 42, Issue 2,





Organic Coatings Based on Powder Dyes. VII. The influence of Flow Modifiers on the Characteristics of Epoxy-Polyesteric Powder Dyes


Abstract:
It was studied the influence of urheomelamineformaldehydic resin adds, as flow modifier, on the main characteristics of some epoxi-polyesteric powder dye of white signal type and of cover films made with these. It was established that the introducing in the forming of the uhreomelaminoformaldehydic resin ensures the decrease of the gelification time, the disappearence of needle shots and of craters appearing in the cover film made with the standard dye and the reducing of the orange skin aspect intensity. In order to ensure these positive influences it is necessary to introduce in the forming relatively high ratios (9.1%) of urheomelamino-formaldehydic resin. By also introducing an acrylic flow modifier, the positive influences may be obtained with smaller ratios (~ 3.2%) of urheomelaminoformaldehydic resin. Keywords: adds, main, forming, needle shots, forming



Issue: 2005 Volume 42, Issue 2
Pages:
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