Resin impregnant containing water soluble sillcate

Details Resin impregnant containing water soluble sillcate Resin impregnant containing water soluble sillcate

B - Operations, Transporting

32

B

154/100, 154/103

B32B 27/04 (2006.01) B32B 21/04 (2006.01) B44C 1/10 (2006.01) B44C 5/04 (2006.01) C08G 12/38 (2006.01) C08K 3/34 (2006.01) D21H 17/49 (2006.01) D21H 17/51 (2006.01)

Patent

CA 1062596

ABSTRACT OF THE DISCLOSURE Aminoplastic laminates and processes for their preparation are disclosed using a novel urea-modified melamine- formaldehyde resin system which resin has a urea content of 4-50%, a molar ratio of formaldehyde per three NH2 groups from the urea or melamine of between 1:1 and 2.5:1. The resin is used in solution and contains 0.2 to 1.4% of SiO2 present as a water soluble silicate. The resin system is impregnated into paper stock and laminated onto a suitable substrate such as particle board with heat and pressure. The resulting laminates arc less costly than melamine-formaldehyde based resins and are useful as decorative panels, countertops or the like.

234550

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