节元旦专利名称：Phenal-urea-formaldehyde condensation product
麻辣烫底料
发明人：Walter Haslman, Jr.
孕妇鸡汤申请号：US05/973683
wish用法
申请日：19781227
公开号：US04239881A
捏泥人的制作过程公开日：
全部歌曲大全
19801216
乐于助人的近义词
专利内容由知识产权出版社提供
摘要：This invention relates to cellular plastic compositions of condensation products of phenol-urea and formaldehyde uful for thermal and acoustical insulation and methods for their preparation in which the phenol is prent in amounts of about 1 to about 20 percent by weight wherein the condensation product prior to foaming and tting as a rigid cellular plastic has a viscosity at room temperature of approximately 30 to 36 conds, No. 1 Zahn cup, and a pH maintained in the range of about 6 to 8.
申请人：C P CHEMICAL CO INC
代理机构：Pennie & Edmonds
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