Urea formaldehyde foam

专利名称：Urea formaldehyde foam发明人：Marcel Widmann申请号：US05/473759申请日：19740528公开号：US03979341A公开日：19760907

摘要：A foaming system includes a foaming agent solution and a resin solution. In apreferred embodiment, the foaming agent solution includes from 1.6 to 4.8 mmols ofdibutyl naphthalene sulfonic acid as surfactant, from 5 to 20 mmols of phosphoric acid ascatalyst and foam intumescent agent, from 0 to 45.5 mmols of resorcinol as foam anti-collapsing agent, from 9.1 to .6 mmols of chloral hydrate as fire retardant agent andsufficient water to make a solution of about 5% solids concentration. The resin solutionincludes urea formaldehyde resin produced by reacting from 1.0 to 2.4 mols offormaldehyde per mol of urea, from 6.5 to 500 mmols polyethylene glycol as foamcharring component, from 0.3 to 1.2 mmols of calcium chloride as foam uniform cell sizecomponent, from 3 - 310 mmols of dicyandiamide as foam hydrolysis resistancecomponent, from 2 - 30 mmols of sodium bromide as foam aging component, from 0 -150 mmols of furfuryl alcohol as formaldehyde odor masking component and sufficientwater to prepare a solution of 40 to 45% solids concentration. One part by weight of thefoaming agent solution is frothed and then from 0.9 to 1. 5 parts by weight of the resinsolution is sprayed on the froth to obtain foam.

申请人：BORDEN PRODUCTS LIMITED

代理人：George P. Maskas,George A. Kap,Daniel D. Mast

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