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    • 23. 发明授权
    • Molding compounds
    • 成型化合物
    • US3944515A
    • 1976-03-16
    • US524721
    • 1974-11-18
    • Kevin M. FoleyFrank Paul McCombsReuben H. Bell
    • Kevin M. FoleyFrank Paul McCombsReuben H. Bell
    • C04B24/30C04B24/42C04B28/02C08K3/00C08L61/10C08K3/30
    • C04B28/02C04B24/307C04B24/42C08K3/0033
    • A method for producing a phenolic molding is disclosed. The method includes the steps of mixing phenol, formaldehyde and a hydraulic cement, forming the resulting composition to a predetermined shape and maintaining the composition in the predetermined shape until an insoluble, infusible article is formed by condensation. At least 10 percent of the hydraulic cement must be Portland cement. The mole ratio of formaldehyde to phenol must be at least 1:1, and the amount of hydraulic cement must be sufficient for reaction with from 1 to 9 times the sum of the water of condensation of the phenol with the formaldehyde and the water charged to the mix. The use of reinforcing glass fibers in producing phenolic moldings is also disclosed, as well as the use of urea and resorcinol in addition to the phenol, formaldehyde and hydraulic cement.
    • 公开了一种用于生产酚醛模塑的方法。 该方法包括以下步骤:将苯酚,甲醛和水硬性水泥混合,将所得组合物形成预定形状,并将组合物保持在预定形状,直到通过冷凝形成不溶性的可渗透制品。 至少10%的水硬水泥必须是波特兰水泥。 甲醛与苯酚的摩尔比必须至少为1:1,水硬性水泥的含量必须足以与苯酚与甲醛的冷凝水和加入水的水的1至9倍反应 混合 还公开了增强玻璃纤维在制备酚醛模塑品中的用途,以及除苯酚,甲醛和水硬性水泥之外还使用尿素和间苯二酚。