Urea-formaldehyde resin based adhesive containing

专利名称：Urea-formaldehyde resin based adhesive

containing calcium and/or ammoniumligninsulphonate as additive, a urea-formaldehyde resin modified with calciumand/or ammonium ligninsulphonate, andmethods for the production thereof, forpreparing agglomerated wood panels

发明人：Cassinotti, Mario,Rizzi, Achille申请号：EP81200503.1申请日：19810512公开号：EP0041745A1公开日：19811216

摘要：A normal urea-formaldehyde resin based adhesive for agglomerated woodproducts has dry calcium and ammonium ligninsulphonate added to it before use in theproportion of between 13 and 15%by weight of the adhesive; a urea-formaldehyde resinfor use as a base product for adhesives intended for agglomerated wood products ismodified with calcium and/or ammonium ligninsulphonate, which is added during thepreparation of the resin to the extent of between 1 and 17% by weight of dryligninsulphonate with respect to the urea-formaldehyde mixture, to give a final resinhaving the following specification: urea 1 mole; formaldehyde between 1.2 and 1.6 moles;dry calcium and/or ammonium ligninsulphonate between 1 and 17%byweightof the urea-formaldehyde mixture; soda; and acetic acid in sufficient quantity to obtain a pH ofgreater than 7.2.

申请人：SADEPAN CHIMICA S.p.A.

地址：I-46019 Viadana (Mantova) IT

国籍：IT

代理机构：Corradini, Corrado

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