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58 条记录 (耗时 0.024 秒)

    Graft copolymers containing polyoxazoline and polyoxazine, and the preparation thereof
    11.
    发明授权
    Graft copolymers containing polyoxazoline and polyoxazine, and the preparation thereof 失效

    公开(公告)号：US4226956A

    公开(公告)日：1980-10-07

    申请号：US958586

    申请日：1978-11-07

    申请人： Donald N. Schulz ,  Prakash D. Trivedi

    发明人： Donald N. Schulz ,  Prakash D. Trivedi

    IPC分类号： C08G65/16 ,  C08G73/02 ,  C08G73/06 ,  C08G73/00

    CPC分类号： C08G73/06 ,  C08G65/16 ,  C08G73/0233

    摘要： The graft copolymer is the reaction of a backbone polymer having allylic chloride groups therein and monomers forming a pendant graft polymer in the presence of a coinitiator. The monomers have the formula ##STR1## wherein R is an alkyl group having from 1 to 15 carbon atoms, a cycloalkyl group having from 4 to 15 carbon atoms, an aryl group having from 6 to 15 carbon atoms, combinations thereof, or hydrogen. The amount of the pendant graft polymer portion by weight ranges from about 0.5 percent to about 90 percent based upon the total weight of the total graft copolymer with the pendant graft polymer being substituted on the polymer backbone in lieu of the chlorine atom of the allylic chloride group. The backbone polymer is selected from the class consisting of poly(vinyl chloride), polychloroprene, and unsaturated elastomers, the unsaturated elastomers being selected from the class consisting of chlorinated polydienes having repeating units containing from 4 to 12 carbon atoms, polychloroprene, chlorinated butyl rubber, chlorinated EPDM, chlorinated natural rubber, chlorinated styrene-butadiene rubber, and blends thereof.

    Stabilization of polyphosphazene vulcanizates with a metal complex
    12.
    发明授权
    Stabilization of polyphosphazene vulcanizates with a metal complex 失效
    用金属络合物稳定聚磷腈硫化橡胶

    公开(公告)号：US4139523A

    公开(公告)日：1979-02-13

    申请号：US900833

    申请日：1978-04-28

    申请人： Delmar F. Lohr, Jr. ,  Russell W. Koch ,  Donald N. Schulz

    发明人： Delmar F. Lohr, Jr. ,  Russell W. Koch ,  Donald N. Schulz

    IPC分类号： C08L85/00 ,  C08K5/35 ,  C08L85/02 ,  C08K5/29

    CPC分类号： C08L85/02

    摘要： When polyphosphazenes are exposed to elevated temperatures, their physical properties often deteriorate. The addition of a stabilizing compound represented by the structure: ##STR1## wherein W is --CRR'-CRR'-- or ##STR2## AND WHEREIN R and R' are selected from the group consisting of hydrogen, alkyl, cycloalkyl, acyl or a mixture thereof, and M is zinc or magnesium; to polyphosphazene rubbers result in improved retention of the physical properties of such polyphosphazenes. Further, the use of additives of this type does not adversely affect the ability of peroxy compounds to cure the polyphosphazenes to form vulcanizates.Especially useful compounds represented by the above structural formula are zinc or magnesium 1,2-bis(2-oxybenzylideneamino)ethylene.

    摘要翻译： {PG，1当聚磷腈暴露于升高的温度时，它们的物理性能常常恶化。 加入由以下结构表示的稳定化合物：{r1 {tc，1 {rb {rd，335588bbdd00 {b1，55 {501 {a，3 {m，1 {a，4 {bn，55 {sd， s，5 O {S，4 {AB，4444 {S，4 M {S，4 {AB，4444 {S，4 O {US，12 {BN，33 {RD，00335588BBDD {BL，33 {501 {A ，2 {BN，D {MR，1 {BN，3 {US，1 {S，5CH {AD，3 N {M，1 {SD，6 {LS，666F {A，2 {LS，D {MR ，1 {AB，333W {AB，555 {M，1 {SD，6 {SB，6 {LS，AAA1 {A，2 {LS，3 {MR，1 N {AD，5CH {RE {PS { PS，其中W是{13 CRR {40-CRR {40 {13 {0或{r1 {tc，1 {rb {bn，3 {rd，ff11447799cc {b1，11 {501 {a，6 {bn，5 {a ，5 {b1，4 {sd，5; {re {PS {PS和WHEREIN R和R {40 {0选自氢，烷基，环烷基，酰基或其混合物，M是锌或 镁; 对聚磷腈橡胶导致改善这种聚磷腈的物理性能的保留。 此外，使用这种添加剂不会不利地影响过氧化合物固化聚磷腈形成硫化橡胶的能力。

    Linear functional copolymers of ethylene with precise and minimum run length distributions and methods of making thereof
    13.
    发明授权
    Linear functional copolymers of ethylene with precise and minimum run length distributions and methods of making thereof 失效
    具有精确和最小游程长度分布的乙烯的线性官能团共聚物及其制备方法

    公开(公告)号：US07504465B2

    公开(公告)日：2009-03-17

    申请号：US12214189

    申请日：2008-06-17

    申请人： Lisa S. Baugh ,  Stephen E. Lehman, Jr. ,  Kenneth B. Wagener ,  Donald N. Schulz ,  Enock Berluche

    发明人： Lisa S. Baugh ,  Stephen E. Lehman, Jr. ,  Kenneth B. Wagener ,  Donald N. Schulz ,  Enock Berluche

    IPC分类号： C08F216/36

    CPC分类号： C08F210/02 ,  C08F210/16 ,  C08F4/80 ,  C08F236/20 ,  C08F2500/02 ,  C08F2500/03 ,  C08F220/10 ,  C08F218/00 ,  C08F218/08 ,  C08F232/00

    摘要： The present invention is related to a linear functional polymer having repeating units A, B and D. Unit A represents —CH2—, unit B represents and unit D represents where R1 represents a polar functional group. There are at least four A units separating each B unit, each D unit, and each B and D unit. The value y represents the total number of B units and is an integer greater than or equal to 1. The total number of D units is represented by h and is an integer greater than or equal to 0. And x represents the total number of A units and is an integer sufficient that the molar fraction of the B and D units in the linear functional polymer is represented by a value j defined by the equation: j = y + h x + y + h ≤ 0.032 . The present invention is also directed to a method for preparing such linear functional polymers by copolymerizing a first polar substituted monomer and a second non-polar unsubstituted monomer.

    摘要翻译： 本发明涉及具有重复单元A，B和D的线性官能聚合物。单元A表示-CH 2 - ，单元B表示，单元D表示其中R 1表示极性官能团。 每个B单元，每个D单元和每个B和D单元分开至少四个A单元。 值y表示B个单位的总数，并且是大于或等于1的整数.D单位的总数由h表示，并且是大于或等于0的整数。x表示A的总数 单位，并且是足以使线性官能聚合物中B和D单元的摩尔分数由以下等式定义的值j表示的整数： < 数学溢出=“滚动”> j = y + h x + y +

    Process for the formation of novel acrylamide acrylate copolymers
    18.
    发明授权
    Process for the formation of novel acrylamide acrylate copolymers 失效
    形成新型丙烯酰胺丙烯酸酯共聚物的方法

    公开(公告)号：US4579926A

    公开(公告)日：1986-04-01

    申请号：US598223

    申请日：1984-04-09

    申请人： John J. Maurer ,  Donald N. Schulz ,  Jan Bock

    发明人： John J. Maurer ,  Donald N. Schulz ,  Jan Bock

    IPC分类号： C08F6/06 ,  C08F220/56

    CPC分类号： C08F220/56 ,  C08F6/06

    摘要： The present invention relates to a process for the formation of water soluble copolymers of acrylamide and alkyl poly(etheroxy)acrylate which are finished by a dialysis process and are excellent viscosification agents. Wherein the process includes the free radical copolymerization of acrylamide monomer and alkyl poly(etheroxy)acrylate monomer in an aqueous medium under nitrogen conditions in the presence of free radical initiator at a sufficient temperature and for a sufficient time to effect copolymerization.

    摘要翻译： 本发明涉及一种形成丙烯酰胺和聚（乙烯基）丙烯酸烷基酯的水溶性共聚物的方法，其通过透析法完成，并且是优异的增粘剂。 其中该方法包括丙烯酰胺单体和烷基聚（乙烯基）丙烯酸酯单体在水性介质中在氮气条件下，在自由基引发剂存在下，在足够的温度下进行自由基共聚，并持续足够的时间进行共聚。

    Fluid loss control in oil field cements
    19.
    发明授权
    Fluid loss control in oil field cements 失效
    油田水泥中的流体损失控制

    公开(公告)号：US4480693A

    公开(公告)日：1984-11-06

    申请号：US565158

    申请日：1983-12-23

    申请人： John C. Newlove ,  Robert C. Portnoy ,  Donald N. Schulz ,  Kissho Kitano

    发明人： John C. Newlove ,  Robert C. Portnoy ,  Donald N. Schulz ,  Kissho Kitano

    IPC分类号： C04B24/22 ,  C09K8/035 ,  C09K8/46 ,  C09K8/487 ,  C09K8/508 ,  E21B33/138

    CPC分类号： C09K8/5083 ,  C04B24/22 ,  C09K8/035 ,  C09K8/46 ,  C09K8/487 ,  C04B2103/46

    摘要： The present invention relates to materials which reduce the filtration of fluid into permeable earth formations during cementing processes in the drilling and completing of subterranean wells, particularly wells for the recovery of petroleum resources.Petroleum well cementing is the process of mixing a slurry of cement, water, and other additives and pumping it down through steel casing to critical points in the oil well annulus around the casing or in the open hole below the casing string. The primary functions of the cementing process are to restrict fluid movement between geological formations and to bond and support the casing. In addition the cement aids in protecting the casing from corrosion, preventing blowouts by quickly sealing formations, protecting the casing from shock loads in drilling deeper wells, and sealing off lost circulation or thief zones.A common problem in petroleum well cementing is the flow of liquid from the cement slurry into porous earth formations in contact with the cement. This fluid loss is undesirable since it can result in dehydration of the cement slurry, and it causes thick filter cakes of cement solids which can plug the well bore. The fluid lost can damage sensitive formations. Cement fluid loss is particularly a problem in the process known as squeeze cementing.There is a requirement, therefore, for materials which, when added to the cement formulation, reduce the loss of fluid from the slurry to porous formations.

    摘要翻译： 本发明涉及在钻井和完井地下井，特别是用于回收石油资源的井的固井过程中减少流体过滤到渗透性地层中的材料。 石油井固井是将水泥，水和其他添加剂的浆料混合并通过钢壳抽吸到套管周围的油井环面或套管柱下方的开孔中的临界点的过程。 固井过程的主要功能是限制地质构造之间的流体运动并粘结和支撑套管。 此外，水泥有助于保护套管免受腐蚀，通过快速密封地层来防止井喷，保护套管免受钻井深井的冲击负荷，并密封泄漏的流通或小偷区域。 石油井固化中的一个常见问题是液体从水泥泥浆流到与水泥接触的多孔地层中。 这种流体损失是不期望的，因为它可能导致水泥浆料的脱水，并且它引起可以堵塞井眼的粘固固体的厚滤饼。 损失的液体会损坏敏感地层。 在已知的挤压固井过程中，水泥流失特别是一个问题。 因此，对于添加到水泥配方中的材料，需要减少流体从浆料到多孔地层的损失。