D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
18/500
D01D 5/26 (2006.01) C08G 63/54 (2006.01) D01D 5/38 (2006.01) D01F 6/62 (2006.01)
Patent
CA 1110417
ABSTRACT OF THE DISCLOSURE This invention relates to a novel product, fibrils of crosslinked polyester resin having a vesiculated structure, and to a process of making them. Vesiculated fibrils of crosslinked polyester resin of length 50 µm - 5 cm, diameter 1 µm - 2mm and aspect ratio of 10-50 are prepared by pouring into water with stirring a selected solution in unsaturated monomer of a carboxylated unsaturated polyester resin of acid value 10-90 mg KOH per g., the water containing both a base having a pKb value of 8 maximum and a dispersion stabiliser, and initiating polymerisation. The polyester solution is selected for suitability for fibril formation by means of a buoyancy test. The fibrils are useful in a number of applications, for example, as fillers for paints and putties, viscosity modifiers in liquids and replacements in some applications for fibrous mineral extenders such as asbestos.
334916
Gillan John
Richards Colin M.
Dulux Australia Ltd.
Roussin Bernard F.
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