<p>Coal washings, having a pH exceeding 6, are coagulated by a polyacrylamide of m.w. exceeding 500,000 and less than 1% hydrolysed. Specification 760,653 is referred to.</p>
申请公布号
GB981963(A)
申请公布日期
1965.02.03
申请号
GB19610007625
申请日期
1961.03.02
申请人
THE YORKSHIRE DYEWARE & CHEMICAL COMPANY LIMITED;DONALD SPETCH