专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4946605A Aqueous drilling and packer fluids 失效
标题翻译：水钻和封隔器流体
公开(公告)号：US4946605A
公开(公告)日：1990-08-07
申请号：US64815
申请日：1987-06-19
申请人： David Farrar , Brian Dymond
发明人： David Farrar , Brian Dymond
IPC分类号： C09K8/24
CPC分类号： C09K8/24 , Y10S507/92 , Y10S507/926
摘要： Sulfonated polymers and copolymers are used as thinners in aqueous drilling or packer fluids. The sulfonated polymer has polydispersity below 2 and has a low solution viscosity. It is generally a copolymer of beta-arylamidoalkane sulfonate or allyl sulfonate or other aliphatic sulfonate with an ethylenically unsaturated carboxylic acid, generally acrylic acid.

2. 发明授权

US4798888A Dry polymers 失效
标题翻译：干聚合物
公开(公告)号：US4798888A
公开(公告)日：1989-01-17
申请号：US719671
申请日：1985-04-04
申请人： Kenneth C. Symes , Peter Flesher
发明人： Kenneth C. Symes , Peter Flesher
IPC分类号： B01D1/16 , C08J3/12 , C08L5/00 , C08L7/00 , C08L21/00 , C08L33/00 , C08L33/02 , C12P19/04 , C08B37/00
CPC分类号： C08J3/122 , C08L5/00 , C08J2305/00
摘要： Powdered polysaccharide may be made by spray drying an emulsion in a non-aqueous liquid of an aqueous solution of the polysaccharide. Spray dried polysaccharides are novel materials. At least 90% by weight of the particles may be within a size range of not more than 100 microns. The particles may have an average size between 50 and 250 microns or between 10 and 50 microns, and the finer particles can be redispersed into oil.
摘要翻译：粉状多糖可以通过在多糖的水溶液的非水性液体中喷雾干燥乳液来制备。喷雾干燥的多糖是新型材料。至少90重量％的颗粒可以在不大于100微米的尺寸范围内。颗粒的平均尺寸可以在50至250微米之间或10至50微米之间，并且更细的颗粒可以再分散到油中。

3. 发明授权

US4789485A Clarification of bayer process liquors 失效
标题翻译：澄清拜耳工艺液体
公开(公告)号：US4789485A
公开(公告)日：1988-12-06
申请号：US47009
申请日：1987-03-25
申请人： John R. Field , Gillian M. Moody , Trevor K. Hunter
发明人： John R. Field , Gillian M. Moody , Trevor K. Hunter
IPC分类号： C01F7/46 , C01F7/47 , B01D21/01
CPC分类号： C01F7/47
摘要： The clarification of a sodium aluminate liquor in the Bayer Process, especially the liquor obtained by Kelly filter filtration of the supernatant from the primary settling stage, is improved by flocculation with a polymer of the formula CH.sub.2 .dbd.C(R.sup.1)CONHR.sup.2 NR.sup.3 R.sup.4 wherein R.sup.1 is hydrogen or methyl, R.sup.2 is straight or branched chain C.sub.2-8 alkylene having at least 2 carbon atoms in the backbone and R.sup.3 and R.sup.4 are independently selected from C.sub.1-4 alkyl.
摘要翻译： PCT No.PCT / GB86 / 00417 Sec。 371日期1987年3月25日 102（e）1987年3月25日PCT PCT 1986年7月17日PCT公布。第WO87 / 00825号公报日本1987年2月12日。拜耳法中的铝酸钠液体的澄清，特别是通过凯利过滤从初级沉降阶段的上清液获得的液体，通过用式CH 2 = C的聚合物 R1）CONHR2NR3R4其中R1是氢或甲基，R2是在主链中具有至少2个碳原子的直链或支链C 2-8亚烷基，并且R 3和R 4独立地选自C 1-4烷基。

4. 发明授权

US4721574A Water treatment 失效
标题翻译：水处理
公开(公告)号：US4721574A
公开(公告)日：1988-01-26
申请号：US866071
申请日：1986-05-21
申请人： George McGrow
发明人： George McGrow
IPC分类号： C08F20/00 , B01D21/01 , C02F1/54 , C08F20/52 , C08F20/60 , C02F1/56
CPC分类号： C02F1/54
摘要： Polymers having recurring units derived from monomers of formula ICH.sub.2 .dbd.C(R.sup.1) CONHR.sup.2 NR.sup.3 R.sup.4 Iwherein R.sup.1 is hydrogen or methyl, R.sup.2 is straight or branched chain C.sub.2-8 alkylene having at least 2 carbon atoms in the backbone and R.sup.3 and R.sup.4 are independently selected from C.sub.1-4 alkyl, most preferably quaternized dimethylaminopropyl methacrylamide polymers, for instance copolymerized with acrylamide, are used as flocculating agents in processes where the polymer is present during part at least of the process in solution in the presence of free chlorine.
摘要翻译：具有衍生自式I的单体的重复单元的聚合物CH2 = C（R1）CONHR2NR3R4I其中R1是氢或甲基，R2是主链中具有至少2个碳原子的直链或支链C2-8亚烷基，R3和R4独立地是选自C 1-4烷基，最优选季铵化的二甲基氨基丙基甲基丙烯酰胺聚合物，例如与丙烯酰胺共聚的聚合物，在聚合物存在的部分至少在游离氯存在下的溶液中存在的过程中被用作絮凝剂。

5. 发明授权

US1752382A Gas-purification process 失效
公开(公告)号：US1752382A
公开(公告)日：1930-04-01
申请号：US52078621
申请日：1921-12-08
申请人： KOPPERS CO INC
发明人： JACOBSON DAVID L
IPC分类号： C10K1/12
CPC分类号： C10K1/125

6. 发明授权

US5147956A Absorbent products and their manufacture 失效
标题翻译：吸收产品及其制造
公开(公告)号：US5147956A
公开(公告)日：1992-09-15
申请号：US521336
申请日：1990-05-09
申请人： Adrian S. Allen
发明人： Adrian S. Allen
IPC分类号： A61F13/53 , A61F5/44 , A61F13/49 , A61L15/60 , C08F8/14 , C08F20/26 , C08F220/04 , C08F220/28 , C08L33/04
CPC分类号： C08F220/04 , A61L15/60 , C08F8/14 , Y10S524/916
摘要： A water soluble, substantially linear, polymer is made by copolymerization of a water soluble blend of monoethylenically unsaturated monomers comprising carboxylic acid monomers such as acrylic acid and a hydroxylic monomer of the formula CHR.sup.1 .dbd.CR.sup.2 --Y--M.sub.a --H where R.sup.1 is hydrogen or carboxy, R.sup.2 is hydrogen, carboxy or methyl, Y is O, CH.sub.2 O or COO, M is alkyleneoxy and a is at least 5. This polymer can be cross linked, generally after being shaped by extrusion or other shaping of an aqueous solution of the polymer, to form cross linkages between the carboxyl and hydroxyl groups. The shaped elements can have water absorbency and can be in the form of, for instance, fibers or films.

7. 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.

8. 发明授权

US4962150A Polymeric stabilizers, their preparation and dispersions containing them 失效
标题翻译：聚合稳定剂，它们的制备和含有它们的分散体
公开(公告)号：US4962150A
公开(公告)日：1990-10-09
申请号：US325197
申请日：1989-03-17
申请人： Adrian S. Allen
发明人： Adrian S. Allen
IPC分类号： B01F17/52 , B01J13/00 , C08F2/32 , C08G69/00 , C08G69/02 , C08G81/00
CPC分类号： C08G81/00 , C08F2/32
摘要： An oil soluble polymeric surfactant that is particularly useful for stabilizing reverse phase polymer dispersions, especially when they are subjected to azeotroping, is a reaction product of an oil soluble polyester carboxylic acid (such as poly-hydroxy stearic acid) and a water soluble polyamine (such as polyethylene imine) of molecular weight above 500 and that contains at least 5 basic nitrogen atoms.

9. 发明授权

US4913775A Production of paper and paper board 失效
标题翻译：生产纸张和纸板
公开(公告)号：US4913775A
公开(公告)日：1990-04-03
申请号：US211780
申请日：1988-06-27
申请人： John Langley , David Holroyd
发明人： John Langley , David Holroyd
IPC分类号： D21H11/08 , D21H11/14 , D21H17/29 , D21H17/44 , D21H17/45 , D21H17/55 , D21H17/56 , D21H17/68 , D21H21/10 , D21H23/14 , D21H23/76 , D21H3/36
CPC分类号： D21H17/68 , D21H17/455 , D21H17/55 , D21H17/56 , D21H23/14 , D21H23/765 , D21H11/08 , D21H11/14 , D21H17/29 , D21H17/44 , D21H21/10
摘要： Paper or paper board is made by passing an aqueous cellulosic suspension through a centriscreen or other shear device and then draining the purified suspension, and an improved combination of retention, drainage, drying and formation is achieved by adding to the suspension an excess of high molecular weight linear synthetic cationic polymer before shearing the suspension and adding bentonite after shearing.
摘要翻译：纸或纸板通过使纤维素水悬浮液通过中心或其它剪切装置，然后排出纯化的悬浮液而制备，并且通过向悬浮液中加入过量的高分子量来实现保留，排出，干燥和形成的改进的组合剪切悬浮液前加入线性合成阳离子聚合物，剪切后加入膨润土。

10. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式