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公开(公告)号：US3857686A
公开(公告)日：1974-12-31
申请号：US11316471
申请日：1971-02-08
Applicant: DOW CHEMICAL CO
Abstract: The low temperature viscosity, freeze point depression and hydrocarbon hydrate formation depression characteristics of glycols are improved by replacing some of the glycol with butyrolactone. The mixture finds utility as a heat transfer medium and in natural gas processing.
Abstract translation: 通过用丁内酯代替一些二醇，提高了二元醇的低温粘度，冻点抑制和碳氢化合物形成抑制特征。 该混合物用作传热介质和天然气处理。
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2.发明授权Reducing scale deposition from alkaline earth metal sulfate and fulfite slurries 失效从碱土金属硫酸盐和富含水泥中减少定标沉积
公开(公告)号：US3801699A
公开(公告)日：1974-04-02
申请号：US3801699D
申请日：1972-03-17
Applicant: DOW CHEMICAL CO
Inventor： ARNOLD J
Abstract: IN THE PROCESS FOR TRANSFERRING AN AQUEOUS SLURRY OF CALCIUM SULFATE, CALCIUM, SULFITE, CALCIUM CARBONATE, DOLOMITE, MAGNESIUM SULFATE, MAGNESIUM SULFITE, MAGNESIUM CARBONATE, FLY ASH OR MIXTURE THEREOF IN CONTACT WITH SURFACE AREAS TO A SETTLING CHAMBER WHERE THE SOLIDS ARE SEPARATED FROM THE LIQUID, POLYACRYLAMIDE IS ADDED TO THE SLURRY TO PREVENT SCALE FORMATION ON THE SURFACES. SUBSEQUENT SEPARATION OF THE SOLIDS FROM THE SLURRY IS NOT ADVERSELY AFFECTED.
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公开(公告)号：US3779936A
公开(公告)日：1973-12-18
申请号：US3779936D
申请日：1972-02-04
Applicant: DOW CHEMICAL CO
IPC: B01D53/26
CPC classification number: B01D53/26
Abstract: Disclosed is an improved method for the briquetting of calcium chloride. The method involves intermixing polyethylene glycol with the calcium chloride fines to be briquetted. The use of polyethylene glycol, which ranges in molecular weight from 1000 to 200,000 and is employed in an amount of from 0.1 to 10 weight percent of the calcium chloride, provides briquettes having distinct advantages over calcium chloride briquettes prepared without such an additive.
Abstract translation: 公开了一种用于压块氯化钙的改进方法。 该方法包括将聚乙二醇与要压块的氯化钙细粒混合。 使用分子量为1000至200,000，使用量为氯化钙的0.1至10重量％的聚乙二醇提供了与不加入添加剂的氯化钙团块相比具有明显优点的团块。
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