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1. 发明授权

US4950748A Polysaccharides 失效
标题翻译：多糖
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
IPC分类号： C08F2/44 , C08F251/00 , C08J3/09 , C08L5/00 , C09K8/32 , C09K8/588 , C09K8/90
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。

2. 发明授权

US5280079A Absorbent products and their manufacture 失效
标题翻译：吸收产品及其制造
公开(公告)号：US5280079A
公开(公告)日：1994-01-18
申请号：US884371
申请日：1992-05-18
申请人： Adrian S. Allen , David Farrar , Peter Flesher
发明人： Adrian S. Allen , David Farrar , Peter Flesher
IPC分类号： A61L15/60 , C08F8/14 , C08F220/04 , C08F220/46 , C08F220/06 , C08F220/28
CPC分类号： C08F220/04 , A61L15/60 , C08F8/14 , Y10S525/919
摘要： A water absorbent water insoluble polymeric element, such as a fibre, film, coating, bonding layer or foam, is made by forming a substantially linear polymer by polymerisation of water soluble ethylenically unsaturated monomer blends comprising carboxylic and hydroxylic monomers and then reacting the carboxylic and hydroxylic monomers in the linear polymer to form internal cross links within the polymer.
摘要翻译：通过使包含羧酸和羟基单体的水溶性烯键式不饱和单体共混物的聚合形成基本上线性的聚合物，然后使羧酸和羟基单体混合物反应，形成吸水性不溶于水的聚合物元件，例如纤维，膜，涂层，粘合层或泡沫线性聚合物中的羟基单体在聚合物内形成内部交联。

3. 发明授权

US4997714A Absorbent products and their manufacture 失效
标题翻译：吸收产品及其制造
公开(公告)号：US4997714A
公开(公告)日：1991-03-05
申请号：US354612
申请日：1989-05-19
申请人： David Farrar , Adrian Allen , Peter Flesher
发明人： David Farrar , Adrian Allen , Peter Flesher
IPC分类号： A61F13/53 , A61F13/49 , B29C55/02 , C08F220/02 , C08F220/04 , C08L101/00 , D01F6/36 , D01F11/06 , D06M13/02 , D06M13/322 , D06M13/342 , D06M13/46 , D06M13/463 , D06M15/263 , D06M101/00 , D06M101/16 , D06M101/18
CPC分类号： D06M15/263 , D06M13/342 , D06M13/463 , D06M7/00 , D06M2101/18 , D06M2200/00 , D06M2200/40 , Y10T428/2967 , Y10T428/2971 , Y10T428/31938
摘要： Film or fibre is made from a polymer of water soluble ethylenically unsaturated monomeric material that includes ionic monomer by extrusion and stretching, and a counterionic lubricant compound is absorbed into the surface of the fibre or film before or during the stretching. The counterionic lubricant compound is also of use for providing a lubricated film on other extruded or comminuted elements of water swellable or water soluble polymeric material.

4. 发明授权

US4906732A Treatment of polyacrylamide gel particles with amidase to reduce residual acrylamide content thereof 失效
标题翻译：用酰胺酶处理聚丙烯酰胺凝胶颗粒以减少残留的丙烯酰胺含量
公开(公告)号：US4906732A
公开(公告)日：1990-03-06
申请号：US308832
申请日：1989-02-09
申请人： David Farrar , Peter Flesher
发明人： David Farrar , Peter Flesher
IPC分类号： C12P7/40 , C08F6/00 , C08F20/52 , C08F20/56 , C08J3/12 , C08L33/26 , C12N9/80
CPC分类号： C12N9/80 , C08F6/006 , C08L33/26
摘要： A substantially dry, particulate polyacrylamide composition having reduced acrylamide monomer content is made by mixing amidase with coarse aqueous gel polymer particles, absorbing the amidase into the particles and subsequently drying the particles.

5. 发明授权

US4996251A Polymeric compositions and their production 失效
标题翻译：聚合物组合物及其制备
公开(公告)号：US4996251A
公开(公告)日：1991-02-26
申请号：US308836
申请日：1989-02-09
申请人： David Farrar , Peter Flesher , Peter R. B. Lawrence
发明人： David Farrar , Peter Flesher , Peter R. B. Lawrence
IPC分类号： C12P7/40 , C08F6/00 , C08F6/06 , C08F20/56 , C08J3/12 , C08L33/24 , C08L33/26 , C12N9/80 , C12N9/98
CPC分类号： C12N9/80 , C08F6/006 , C08L33/26
摘要： The invention provides a substantially dry particulate composition comprising a polyacrylamide and an amidase. An aqueous composition made by dispersing this into water will then have a satisfactorily low content of residual acrylamide even if the initial polymer was contaminated with monomer. The composition is made by blending dry polyacrylamide particles with the amidase.

6. 发明授权

US4980434A Absorbent polymers, their manufacture and uses 失效
标题翻译：吸收性聚合物，其制造和用途
公开(公告)号：US4980434A
公开(公告)日：1990-12-25
申请号：US162134
申请日：1988-02-29
申请人： David Farrar , Peter Flesher , Malcolm Hawe
发明人： David Farrar , Peter Flesher , Malcolm Hawe
IPC分类号： A61L15/60 , C02F1/54 , C07C41/16 , C08F2/32 , C08F16/26 , C08F216/14 , C08F220/06 , C08F220/28 , C08F246/00 , C08J3/03 , C08J3/09 , C09J133/06 , C09J157/04 , C09K8/24
CPC分类号： C08J3/03 , A61L15/60 , C02F1/54 , C07C41/16 , C08F16/26 , C08F2/32 , C08F216/1416 , C08F220/06 , C08F220/28 , C08F246/00 , C08J3/09 , C09J133/062 , C09J157/04 , C09K8/24 , C08J2300/10 , C08J2300/14
摘要： The properties of absorptive synthetic polymer particles formed by polymerisation of water soluble monomers such as sodium acrylate or acrylamide with a cross linking agent are improved, especially as regards absorptive capacity for aqueous electrolytes, by copolymerising the monomers with an ethylenically unsaturated monomer that includes a pendant group --A.sub.m B.sub.n A.sub.p R where B is ethyleneoxy, n is at least 2, A is propyleneoxy or butyleneoxy, m and p are each less than n and are preferably zero, and R is a hydrophobic group.
摘要翻译：通过使水溶性单体如丙烯酸钠或丙烯酰胺与交联剂聚合而形成的吸收性合成聚合物颗粒的性质通过使单体与包含侧基的烯键式不饱和单体共聚来改善，特别是关于水性电解质的吸收能力基团-AmBnApR其中B是亚乙基氧基，n至少为2，A是亚丙氧基或亚丁基氧基，m和p各自小于n，并且优选为零，R是疏水基团。

7. 发明授权

US4789695A Blends of acrylamide polymers and Mannich bases 失效
标题翻译：丙烯酰胺聚合物和曼尼希碱的共混物
公开(公告)号：US4789695A
公开(公告)日：1988-12-06
申请号：US889948
申请日：1986-07-24
申请人： David Farrar , Peter Flesher
发明人： David Farrar , Peter Flesher
IPC分类号： C08K5/16 , C08K3/30 , C08F220/56 , C08J3/00
CPC分类号： C08K5/16
摘要： A Mannich base of a high molecular weight acrylamide polymer can be made by reacting, in aqueous solution, the polymer with a Mannich base of a low molecular weight compound such as urea. A composition of the polymer and the Mannich base is preferably substantially non-aqueous.
摘要翻译：高分子量丙烯酰胺聚合物的曼尼希碱可以通过在水溶液中使聚合物与低分子量化合物如尿素的曼尼希碱反应来制备。聚合物和曼尼希碱的组合物优选基本上是非水的。

8. 发明授权

US4759856A Flocculation processes 失效
标题翻译：絮凝过程
公开(公告)号：US4759856A
公开(公告)日：1988-07-26
申请号：US855519
申请日：1986-04-23
申请人： David Farrar , John R. Field , Peter Flesher , Tony Whittaker
发明人： David Farrar , John R. Field , Peter Flesher , Tony Whittaker
IPC分类号： B01D37/03 , C02F1/34 , C02F1/36 , C02F1/52 , C02F1/54 , D21H17/37 , D21H17/43 , D21H17/45 , D21H21/10 , C02F1/56
CPC分类号： D21H21/10 , B01D37/03 , C02F1/34 , C02F1/36 , C02F1/5227 , C02F1/54 , D21H17/37 , D21H17/43 , D21H17/455 , Y10S524/922
摘要： A cross linked high molecular weight polymer formed from a water soluble monomer or blend of monomers and which has IV and/or solubility and/or rheology properties indicating that it would be unsuitable for use as a flocculant can be used as a flocculant after shearing the polymeric material. The shearing may be applied to the polymeric material before addition to the suspension that is to be flocculated or can be applied to the suspensionthat is being flocculated. The shearing increases the intrinsic viscosity of the polymeric material and can improve its rheology and solubility. The polymeric material must be of high molecular weight.
摘要翻译：由水溶性单体或单体混合物形成的具有IV和/或溶解性和/或流变性质的交联的高分子量聚合物表明其不适合用作絮凝剂，可以在剪切后用作絮凝剂聚合材料。在加入待絮凝的悬浮液中或可以施加到被絮凝的悬浮液之前，剪切可以施加到聚合物材料上。剪切增加了聚合物材料的特性粘度，并可以改善其流变性和溶解性。聚合物材料必须具有高分子量。

9. 发明授权

US4720346A Flocculation processes 失效
标题翻译：絮凝过程
公开(公告)号：US4720346A
公开(公告)日：1988-01-19
申请号：US855509
申请日：1986-04-23
申请人： Peter Flesher , David Farrar , John R. Field
发明人： Peter Flesher , David Farrar , John R. Field
IPC分类号： B01D21/01 , C02F1/52 , C02F1/54 , C02F1/56 , D21H17/37 , D21H17/43 , D21H17/45 , D21H21/10
CPC分类号： C02F1/54 , C02F1/52 , C02F1/5227 , D21H21/10 , D21H17/37 , D21H17/43 , D21H17/455 , Y10S524/922
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 subjected 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。

10. 发明授权

US4702844A Flocculants and their use 失效
标题翻译：絮凝剂及其用途
公开(公告)号：US4702844A
公开(公告)日：1987-10-27
申请号：US766097
申请日：1985-08-15
申请人： Peter Flesher , David Farrar , Malcolm Hawe , John Langley
发明人： Peter Flesher , David Farrar , Malcolm Hawe , John Langley
IPC分类号： C02F1/54 , C08F2/32 , C08J3/03 , C08J3/09 , C02F1/56
CPC分类号： C08J3/03 , C02F1/54 , C08F2/32 , C08J3/09 , C08J2300/10 , C08J2300/14
摘要： A suspension may be flocculated using a water soluble substantially linear polymer having a single point intrinsic viscosity above 3 and that is a copolymer of two or more ethylenically unsaturated monomers including at least 0.5% by weight of monomer carrying pendant hydrophobic groups. The cationic polymers are novel. Preferred polymers are those in which the hydrophobic group is introduced as an allyl ether.
摘要翻译：可以使用具有高于3的单点特性粘度的水溶性基本线性聚合物来絮凝悬浮液，并且其是包含至少0.5重量％的携带侧链疏水基团的单体的两种或更多种烯属不饱和单体的共聚物。阳离子聚合物是新颖的。优选的聚合物是其中引入疏水基团作为烯丙基醚的聚合物。

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