发明授权
US5318718A Process for the production of a pourable phosphate-free foam-inhibiting preparation 失效
生产可倾倒磷酸盐泡沫抑制剂的方法

Process for the production of a pourable phosphate-free foam-inhibiting
preparation
摘要:
A process for the production of pourable foam inhibitor granules comprising forming an aqueous solution of a mixture of an alkali metal carboxymethyl cellulose and a nonionic cellulose ether and maintaining the aqueous solution at slightly elevated temperature until the viscosity is at least 60% of the viscosity obtained by complete swelling of the solution, adding a water insoluble foam inhibitor and a phosphate-free mixture of at least two of an alkali metal silicate, an alkali metal carbonate and an alkali metal sulfate into the aqueous mixture which is then spray-dried to form the pourable foam inhibitor granules.The invention also relates to the pourable foam inhibitor granules produced by the above process.
信息查询
0/0