公开(公告)号：US06303663B1

公开(公告)日：2001-10-16

申请号：US09277708

申请日：1999-03-26

Applicant: Ronald W. Broadbent ,  Dharmesh Chovatia

Inventor： Ronald W. Broadbent ,  Dharmesh Chovatia

IPC: C01B33145

CPC classification number: B01D19/0409 ,  B01D19/0404 ,  Y10T428/2995

Abstract: Silica is rendered hydrophobic by a catalyst-free, in-situ process that includes contact with a hydrophobing agent under vacuum at elevated temperature for a time sufficient to replace adsorbed water in the silica with the hydrophobing agent. The resulting dispersion of hydrophobic silica in an inert, liquid, hydrophobic carrier medium is then subjected to high shear forces for a time sufficient to produce a homogeneous dispersion of hydrophobic silica particles in a defoaming composition.

Abstract translation: 二氧化硅通过无催化剂的原位方法使其疏水，包括在真空下在高温下与疏水剂接触足够的时间以用疏水剂代替二氧化硅中的吸附水。 然后将所得的疏水性二氧化硅在惰性，液体，疏水性载体介质中的分散体经受高剪切力足以在疏水性组合物中产生疏水性二氧化硅颗粒的均匀分散体。

公开(公告)号：US5665237A

公开(公告)日：1997-09-09

申请号：US395738

申请日：1995-02-28

Applicant: William G. Kozak ,  Dharmesh Chovatia ,  George A. Smith

Inventor： William G. Kozak ,  Dharmesh Chovatia ,  George A. Smith

IPC: B01D61/02 ,  C02F1/26 ,  B01D11/04

CPC classification number: B01D61/02 ,  C02F1/26

Abstract: A process for the separation of naphthalenesulfonate-based carbonyl condensates from water is provided. The process comprises contacting a mixture comprised of water and a naphthalenesulfonate-based carbonyl condensate (preferably a material selected from the group consisting of formaldehyde condensates of naphthalenesulfonic acids, formaldehyde condensates of lower-alkyl substituted naphthalenesulfonic acids, and mixtures of two or more of such materials) with a liquid organic phase comprised of a cationic lipophilic amine to form an aqueous phase depleted with respect to said mixture of naphthalenesulfonate-based carbonyl condensate and a liquid organic phase enriched in naphthalenesulfonate-based carbonyl condensate. The process further comprises separating said aqueous phase depleted with respect to said minute of naphthalenesulfonate-based carbonyl condensate and said liquid organic phase enriched with respect to naphthalenesulfonate-based carbonyl condensate. The liquid organic phase can then be stripped with an alkaline stripping solution to regenerate the cationic lipophilic amine.

Abstract translation: 提供了一种从水中分离萘磺酸盐的羰基缩合物的方法。 该方法包括将由水和萘磺酸盐基羰基缩合物组成的混合物（优选选自萘磺酸的甲醛缩合物，低级烷基取代的萘磺酸的甲醛缩合物，以及两种或更多种 材料）与由阳离子亲脂胺组成的液体有机相形成相对于所述萘磺酸盐基羰基缩合物的混合物和富含萘磺酸盐基羰基缩合物的液体有机相贫化的水相。 该方法还包括将相对于萘磺酸盐羰基缩合物的所述分钟贫化的所述水相和相对于萘磺酸盐羰基缩合物富集的所述液体有机相分离。 然后可以用碱性剥离溶液汽提液态有机相，以再生阳离子亲脂胺。

公开(公告)号：US5501796A

公开(公告)日：1996-03-26

申请号：US287014

申请日：1994-08-08

Applicant: William G. Kozak ,  Dharmesh Chovatia ,  George A. Smith

Inventor： William G. Kozak ,  Dharmesh Chovatia ,  George A. Smith

IPC: B01D61/02 ,  C02F1/26 ,  B01D11/04

CPC classification number: C02F1/26 ,  B01D61/02 ,  Y10S205/915

Abstract: A process for the separation of naphthalenesulfonate-based carbonyl condensates from water is provided. The process comprises contacting a mixture comprised of water and a naphthalenesulfonate-based carbonyl condensate (preferably a material selected from the group consisting of formaldehyde condensates of naphthalenesulfonic acids, formaldehyde condensates of lower-alkyl substituted naphthalenesulfonic acids, and mixtures of two or more of such materials) with a liquid organic phase comprised of a cationic lipophilic amine to form an aqueous phase depleted with respect to said mixture of naphthalenesulfonate-based carbonyl condensate and a liquid organic phase enriched in naphthalenesulfonate-based carbonyl condensate. The process further comprises separating said aqueous phase depleted with respect to said mixture of naphthalenesulfonate-based carbonyl condensate and said liquid organic phase enriched with respect to naphthalenesulfonate-based carbonyl condensate. The liquid organic phase can then be stripped with an alkaline stripping solution to regenerate the cationic lipophilic amine.

Abstract translation: 提供了一种从水中分离萘磺酸盐基羰基缩合物的方法。 该方法包括将由水和萘磺酸盐基羰基缩合物组成的混合物（优选选自萘磺酸的甲醛缩合物，低级烷基取代的萘磺酸的甲醛缩合物，以及两种或更多种 材料）与由阳离子亲脂胺组成的液体有机相形成相对于所述萘磺酸盐基羰基缩合物的混合物和富含萘磺酸盐基羰基缩合物的液体有机相贫化的水相。 该方法还包括相对于萘磺酸盐羰基缩合物的混合物和相对于萘磺酸盐羰基缩合物富集的所述液体有机相，分离所述水相。 然后可以用碱性剥离溶液汽提液态有机相以再生阳离子亲脂胺。