发明名称 Pulverulent aminoplast adhesive resin for wood-base materials having a low formaldehyde emission, its preparation, and a formulated pulverulent aminoplast adhesive resin
摘要 In the proposed pulverulent aminoplast adhesive resin for wood-base materials having a low formaldehyde emission, the resin is a mixture of (a) from 40 to 90 parts by weight of a urea/formaldehyde resin having a molar ratio of urea to formaldehyde of from 1:1.4 to 1:2, (b) from 2 to 20 parts by weight of melamine, some or all of which may have been reacted with the urea/formaldehyde resin component, (c) from 2 to 20 parts by weight of urea and (d) if required, from 0.1 to 10 parts by weight of an agent for increasing the shelf life, together with not more than 10 parts by weight of water and, if required, not more than 10 parts by weight of other additives, the numbers of parts by weight of the components summing to 100. In the process for the preparation of the pulverulent aminoplast adhesive resin, powdered melamine is stirred into a solution of the urea/formaldehyde resin, urea is added and the solution is spray dried. The aminoplast adhesive resins are suitable in the manufacture of particle board, plywood board and as paper adhesives.
申请公布号 US4814422(A) 申请公布日期 1989.03.21
申请号 US19870063685 申请日期 1987.06.19
申请人 BASF AKTIENGESELLSCHAFT 发明人 DIEM, HANS;KRAUS, FRIEDRICH;MATTHIAS, GUENTHER;MAURER, BRUNO;WITTMANN, OTTO
分类号 C08F2/10;C08G12/38;C09J161/20;(IPC1-7):C08G14/10 主分类号 C08F2/10
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