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公开(公告)号：US5283272A
公开(公告)日：1994-02-01
申请号：US924361
申请日：1992-07-31
申请人： Peter Flesher , David Farrar
发明人： Peter Flesher , David Farrar
CPC分类号： C08F8/00 , B01J19/2415 , B01J2219/00155 , B01J2219/00166 , B01J2219/00168 , B01J2219/00177
摘要： High molecular weight polymer that can form a viscous aqueous solution is chemically modified by mixing the previously formed polymer (as a powder, reverse phase dispersion or oil-in-water emulsion) with water and the reagent for effecting the chemical modification so as to form a viscous aqueous mixture having a viscosity of at least 1OOO cps (Brookfield RVT) and then feeding this mixture as intermittent batches into one end of a tower through which it moves with substantially plug flow and from which it is withdrawn, at the end of the reaction, as intermittent batches. The apparatus for this purpose is also novel.
摘要翻译： 通过将先前形成的聚合物（作为粉末，反相分散体或水包油乳液）与水和用于进行化学改性的试剂混合形成粘性水溶液的高分子量聚合物进行化学改性，以形成 粘稠的含水混合物，其粘度至少为1000cps（Brookfield RVT），然后将该混合物间歇地分批送入塔的一端，在塔的一端，基本上是塞子流移动并从塔中取出， 反应，间歇批次。 用于此目的的装置也是新颖的。
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公开(公告)号：US5171781A
公开(公告)日：1992-12-15
申请号：US303476
申请日：1989-01-27
申请人： David Farrar , John R. Field , Peter Flesher
发明人： David Farrar , John R. Field , Peter Flesher
CPC分类号： C08J3/12 , B01J20/22 , C02F1/5227 , C02F1/5236 , C02F1/54 , C10L5/14 , C10L9/10 , C22B1/244 , C08J2300/14
摘要： Water absorbent particulate polymers and their uses are described. Friable aggregates may be made by bonding substantially dry polymer particles with an aqueous liquid and drying the aggregates. These aggregates can be broken down to the individual polymer particles upon mixing with an aqueous medium and thus can have the flow properties of relatively coarse particles and the performance properties of relatively fine particles. They may be soluble nd used as flocculants or viscosifiers or binders for, for instance, iron ore pelletisation. Alternatively they may be swellable and insoluble, for instance for converting a sticky particulate mass (such as coal fines filter cake) to a crumbly solid. When pellets are formed by compression moulding from a crumbly solid made by mixing water absorbent polymer particles with a sticky mass of inorganic particles (such as a coal fines filter cake) improved properties are obtained when the absorbent polymer particles are introduced in the form of a dispersion in water-immiscible liquid.
摘要翻译： 描述了吸水性颗粒聚合物及其用途。 可以通过将基本上干燥的聚合物颗粒与水性液体粘合并干燥聚集体来制备易碎聚集体。 这些聚集体可以在与水性介质混合时分解成单独的聚合物颗粒，因此可以具有相对粗的颗粒的流动性质和较细颗粒的性能。 它们可能是可溶性的，用作例如铁矿石造粒的絮凝剂或粘合剂或粘合剂。 或者，它们可以是可溶胀的和不溶的，例如用于将粘性颗粒物质（例如煤粉滤饼）转化成脆弱的固体。 当通过将吸水性聚合物颗粒与粘性质量的无机颗粒（例如煤粉滤饼）混合制成的粉碎的固体通过压缩成型形成颗粒时，当吸收性聚合物颗粒以 分散在与水不混溶的液体中。
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公开(公告)号：US4950747A
公开(公告)日：1990-08-21
申请号：US173946
申请日：1988-03-28
申请人： David Farrar , Peter Flesher , Kenneth C. Symes
发明人： David Farrar , Peter Flesher , Kenneth C. Symes
CPC分类号： C09K8/905 , C08J3/09 , C08L5/00 , C09K8/32 , C09K8/588 , C08J2300/14 , C08J2305/00
摘要： When drying an aqueous polysaccharide solution, the viscosification properties are maintained, and often improved, by including a low molecular weight electrolyte in the solution before the drying is completed, and generally before the solution is heated above 50.degree. C.
摘要翻译： 当干燥多糖水溶液时，通过在干燥完成之前在溶液中包含低分子量电解质，并且通常在将溶液加热至高于50℃之前，保持粘度特性并经常改善。
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公开(公告)号：US4943378A
公开(公告)日：1990-07-24
申请号：US325093
申请日：1989-03-15
申请人： Peter Flesher , David Farrar , John R. Field
发明人： Peter Flesher , David Farrar , John R. Field
CPC分类号： C02F1/5227 , C02F1/54 , D21H21/10 , D21H17/37 , D21H17/43 , D21H17/455
摘要： When flocculating an aqueous suspension of suspended solids using a high molecular weight synthetic polymeric flocculant the shear stability of the flocs is increased if the polymeric material includes polymeric particles of below 10 .mu.m dry size. The flocculated solids can therefore be subjected to shear without increasing the amount of discrete suspended solids in the aqueous medium and generally they are suspended to shear by shearing the aqueous medium containing them, either before dewatering, generally on a centrifuge, piston press or belt press, or by continuously agitating them, for instance in a chemical reaction medium. The polymeric material is generally formed by mixing into water polymeric particles made by reverse phase or emulsion polymerization in the presence of added cross linking agent. Alternatively particles insolubilized by insoluble monomer may be used. A reverse phase dispersion of water soluble polymer may be used if the particles remain undissolved, e.g. if they are added in the absence of an oil in water emulsifying agent.
摘要翻译： 当使用高分子量合成聚合物絮凝剂絮凝悬浮固体的水性悬浮液时，如果聚合物材料包括低于10μm干燥尺寸的聚合物颗粒，则絮凝物的剪切稳定性增加。 因此，絮凝的固体可以经受剪切而不增加水性介质中离散的悬浮固体的量，并且通常在脱水之前通常剪切含有它们的水性介质，通常在离心机，活塞压力机或带式压力机 ，或者通过连续搅拌它们，例如在化学反应介质中。 聚合物材料通常通过在添加的交联剂的存在下混合成通过反相或乳液聚合制备的水聚合物颗粒来形成。 或者可以使用不溶性单体不溶的颗粒。 如果颗粒保持不溶，则可以使用水溶性聚合物的反相分散体，例如， 如果在没有水包油乳化剂的情况下加入。
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公开(公告)号：US4940763A
公开(公告)日：1990-07-10
申请号：US113599
申请日：1987-10-26
申请人： Peter Flesher , David Farrar , Malcolm Hawe , John Langley
发明人： Peter Flesher , David Farrar , Malcolm Hawe , John Langley
CPC分类号： C08J3/03 , C02F1/54 , C08F2/32 , C08J3/09 , C08J2300/10 , C08J2300/14
摘要： Water soluble, substantially linear, polymers having single point intrinsic viscosity above about 3 are formed from an ethylenically unsaturated monomer that includes a group --B.sub.n A.sub.m R where A is propoxy or butoxy, B is ethoxy, n is zero or an integer of 2 to 100 and m is zero or an integer less than n, and R is a hydrophobic group of at least 8 carbon atoms and comonomer selected from non-ionic monomers and dialkylamino alkyl (meth) -acrylates or -acrylamides wherein at least one of the monomers is tertiary amine acid addition or quaternary ammonium salt. The resultant water soluble, high molecular weight, cationic polymers are useful as flocculants and as viscosifiers of aqueous acid solutions such as downhole acid stimulation fluids.
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公开(公告)号：US4859720A
公开(公告)日：1989-08-22
申请号：US11062
申请日：1987-02-04
申请人： Peter Flesher , John Langley , Norma Rosier , David Farrar
发明人： Peter Flesher , John Langley , Norma Rosier , David Farrar
CPC分类号： D21H17/41 , D21H17/375 , D21H17/42 , D21H17/43 , D21H17/455
摘要： A concentrate composition, that can be diluted with water to form an aqueous size for cellulosic fibres, comprises a substantially anhydrous dispersion of polyelectrolyte particles in a non-aqueous liquid comprising a reactive size, and is made by forming a dispersion in a hydrophobic liquid of the polyelectrolyte particles while they are swollen by water, azeotroping the dispersion and adding the size to the hydrophoboic liquid. If the size is a liquid size, the hydrophobic liquid may be removed from the composition. The dispersion of swollen polyelectrolyte particles in the hydrophobic liquid can be amde by dispersing a solution of polyelectrolyte in the liquid but is preferably made by reverse phase polymerization.
摘要翻译： 可以用水稀释以形成纤维素纤维的水性尺寸的浓缩物组合物包含聚电解质颗粒在包含反应性大小的非水性液体中的基本上无水的分散体，并且通过在疏水性液体中形成分散体 聚电解质颗粒当它们被水溶胀时，使分散体共沸并将其加入到疏水液体中。 如果尺寸是液体尺寸，则可以从组合物中除去疏水性液体。 疏水性液体中溶胀的聚电解质颗粒的分散体可以通过将聚电解质溶液分散在液体中来进行，但优选通过反相聚合反应制备。
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公开(公告)号：US4543423A
公开(公告)日：1985-09-24
申请号：US437385
申请日：1982-10-28
申请人： David Farrar , Peter Flesher
发明人： David Farrar , Peter Flesher
IPC分类号： C07B61/00 , B01J25/00 , B01J25/04 , C07C67/00 , C07C231/00 , C07C231/06 , C07C233/04 , C07C233/09 , C07C102/08
CPC分类号： C07C233/09
摘要： A nitrile, such as acrylonitrile, is hydrated to the corresponding amide in the presence of a Raney copper catalyst that, before use in the reaction, is partially oxidized by contact with a controlled oxidizing system comprising oxygen, peroxide, iodate, chlorate, bromate or nitrate.
摘要翻译： 在阮内铜催化剂存在下，将腈如丙烯腈水合成相应的酰胺，该催化剂在反应中使用之前通过与包含氧，过氧化物，碘酸盐，氯酸盐，溴酸盐的受控氧化体系接触而部分氧化， 硝酸盐
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公开(公告)号：US5110859A
公开(公告)日：1992-05-05
申请号：US602920
申请日：1990-10-19
申请人： Peter Flesher , David Farrar
发明人： Peter Flesher , David Farrar
IPC分类号： C08F8/12
CPC分类号： C08F8/12 , C08J5/18 , C08F2810/50
摘要： Novel polyvinyl alcohols include, in the polymeric backbone, vinyl units containing pendant hydrophobic groups. The polymers are made by hydrolysis of corresponding polyvinyl acylates under conditions are avoid hydrolysis of the pendant hydrophobic groups from the polymer. These groups are preferably bonded into the polymer as allyl ether units. The hydrophobic units act as internal plasticizers in films or other shaped articles formed from the polymers and, in particular, gives significant benefit in viscosity and other rheology characteristics of aqueous compositions formed from the polymer.
摘要翻译： 在聚合物主链中，新的聚乙烯醇包括含有疏水基侧基的乙烯基单元。 聚合物通过水解相应的聚乙烯基酰化物而制备，条件是避免侧链疏水基团从聚合物中水解。 这些基团优选以烯丙基醚单元结合到聚合物中。 疏水单元用作由聚合物形成的膜或其它成型制品中的内部增塑剂，特别是从由聚合物形成的含水组合物的粘度和其它流变特性方面具有显着的益处。
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公开(公告)号：US4950788A
公开(公告)日：1990-08-21
申请号：US314544
申请日：1989-02-23
申请人： David Farrar , Peter Flesher
发明人： David Farrar , Peter Flesher
IPC分类号： C07C51/08
CPC分类号： C07C51/08
摘要： Acrylic acid or other unsaturated carboxylic acid is made by hydrolysing the corresponding nitrile in the presence of excess sulphuric acid to form amide sulphate, adding amide in an amount such that the total amount of amide and nitrile fed to the process is greater than 1 mole per mole sulphuric acid, hydrolysing the amide sulphate and amide to the desired acid and separating the acid from the sulphate by-products.
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公开(公告)号：US4950748A
公开(公告)日：1990-08-21
申请号：US173947
申请日：1988-03-28
申请人： David Farrar , Peter Flesher , Kenneth Symes
发明人： David Farrar , Peter Flesher , Kenneth Symes
CPC分类号： C09K8/905 , C08F2/44 , C08F251/00 , C08J3/09 , C08L5/00 , C09K8/32 , C09K8/588 , C08J2300/14
摘要： An intimate water soluble or water swellable blend of microbial polysaccharide and synthetic polymer derived from water soluble monomer or monomer blend is made by forming an emulsion in non-aqueous liquid of an aqueous fermentation solution of the microbial polysaccharide and the monomer or monomer blend and then polymerizing the monomer or monomer blend to form a dispersion in non-aqueous liquid of aqueous particles of the water soluble or water swellable blend. This dispersion may then be dehydrated.
摘要翻译： 通过在微生物多糖和单体或单体混合物的水性发酵液的非水性液体中形成乳液制备微生物多糖和衍生自水溶性单体或单体共混物的合成聚合物的亲水性水溶性或水可溶胀共混物，然后 聚合单体或单体共混物以在水溶性或水可溶胀共混物的水性颗粒的非水性液体中形成分散体。 然后可以将该分散体脱水。
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