发明名称 |
Preparing particleboard utilizing a vegetable wax or derivative and polyisocyanate as a release agent on metal press parts |
摘要 |
Sheets or moulded bodies, for example particle board, are manufactured by hot pressing a lignocellulosic material in contact with an organic polyisocyanate and a wax release agent which is a vegetable wax, a modified vegetable oil, a microcrystalline wax or a mineral wax, said wax release agent having a melting point of at least 70 DEG C. Preferably the wax release agent is applied to the lignocellulosic material in the form of a dispersion in an aqueous emulsion of the polyisocyanate. The process facilitates the release of the sheets or moulded bodies from the caul plates or platens of the press.
|
申请公布号 |
US4388138(A) |
申请公布日期 |
1983.06.14 |
申请号 |
US19810289733 |
申请日期 |
1981.08.03 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES LIMITED |
发明人 |
BROWN, JAMES P.;GIBBINS, GRAHAM;HAMPSON, ROBERT S. |
分类号 |
C08J3/02;B27N3/00;B27N3/02;B27N3/08;C08L97/02;(IPC1-7):B32B21/02;C08L91/06 |
主分类号 |
C08J3/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|