Stable aqueous suspensions of zeolite which can be easily pumped
    11.
    发明授权
    Stable aqueous suspensions of zeolite which can be easily pumped 失效
    易于泵送的稳定的沸石水性悬浮液

    公开(公告)号:US5312793A

    公开(公告)日:1994-05-17

    申请号:US905731

    申请日:1992-06-29

    摘要: Stable aqueous suspensions of zeolite 4A which can be easily pumped, containing from 0.5 to 65% of zeolite and from 0.05 to 6 g (per 100 g of zeolite) of a suspending agent, composed of mixtures of ethoxylated alkanols, said mixtures being obtained by ethoxylating: a) biodegradable branched alkanols, having from 10 to 18 carbon atoms and having a single branching in position 2, said mixtures containing at least 2 alkanols having a different number of C atoms; or b) mixtures containing 40-100% of branched alkanols as in a) and 60-0% of linear alkanols having from 10 to 18 C atoms.

    摘要翻译: 沸石4A的稳定含水悬浮液,其易于泵送,其含有0.5至65%的沸石和0.05至6g(每100g沸石)悬浮剂,其由乙氧基化链烷醇的混合物组成,所述混合物由 乙氧基化:a)具有10至18个碳原子并且在位置2具有单个支链的可生物降解的支链烷醇,所述混合物含有至少2个具有不同数目C原子的链烷醇; 或b)含有40-100%如a)中的支链链烷醇和60-0%的具有10至18个C原子的线性链烷醇的混合物。

    Process for purifying gaseous formaldehyde
    12.
    发明授权
    Process for purifying gaseous formaldehyde 失效
    甲醛净化方法

    公开(公告)号:US4203735A

    公开(公告)日:1980-05-20

    申请号:US895553

    申请日:1978-04-12

    CPC分类号: C07C45/79

    摘要: Raw gaseous formaldehyde is purified by passing it through a first series of superimposed fluidized beds of solid adsorbent, maintained at 80.degree.-140.degree. C., while continuously circulating solid adsorbent from each bed to the underlying bed and discharging from the lowermost bed the spent adsorbent, delivering the latter to the uppermost bed of a second series of superimposed fluidized beds of solid adsorbent, passing through the latter a stream of inert gas to strip the adsorbed formaldehyde at 130.degree.-150.degree. C., while continuously circulating said spent adsorbent from each bed to the underlying bed and discharging from the lowermost bed the adsorbent thus treated, delivering the latter to the uppermost bed of a third series of fluidized beds of solid adsorbent, and passing through the latter a stream of inert gas to regenerate the adsorbent at 145.degree.-250.degree. C., while continuously circulating the adsorbent from each bed to the underlying bed, discharging the regenerated adsorbent from the lowermost bed and recycling said regenerated adsorbent to the uppermost bed of the first series.

    摘要翻译: 通过将原始气态甲醛通过固体吸附剂的第一系列叠加的流化床,保持在80-140℃,同时将固体吸附剂从每个床连续循环到下面的床并从最下面的床排出,从而净化 吸附剂,将其输送到固体吸附剂的第二系列叠加流化床的最上层,通过惰性气体流在130-150℃下分离吸附的甲醛,同时连续循环所述废吸附剂 从每个床到下面的床,并从最下层的床排出由此处理的吸附剂,将其输送到固体吸附剂的第三系列流化床的最上层,并通过惰性气体流再生吸附剂 在145°-250℃下,同时将吸附剂从每个床连续循环到下层床,排出再生吸附剂 t并将所述再生吸附剂再循环到第一系列的最上层。

    Plural stage recovery of trioxane in a process having a molecular
distillation step
    13.
    发明授权
    Plural stage recovery of trioxane in a process having a molecular distillation step 失效
    在具有分子蒸馏步骤的方法中,三恶烷的多级回收

    公开(公告)号:US4043873A

    公开(公告)日:1977-08-23

    申请号:US677952

    申请日:1976-04-19

    IPC分类号: C07D323/06 B01D3/12

    CPC分类号: C07D323/06

    摘要: Process for the separation of trioxane from aqueous solutions containing it together with formaldehyde, which comprises subjecting the said solutions to evaporation at temperatures of 100.degree. C or lower, at pressures lower than atmospheric, and with residence times of less than 1 minute under the evaporation conditions, with vaporization of a quantity of from about 5 to about 15% by weight of the solution introduced, and recovering the trioxane from the products evaporated in this way.

    摘要翻译: 将含有它的水溶液与甲醛一起分离三恶烷的方法,其中包括使所述溶液在低于大气压的压力下在100℃或更低的温度下蒸发,并且在蒸发下的停留时间小于1分钟 条件,蒸发量为所引入溶液的约5至约15重量%,并从以这种方式蒸发的产物中回收三恶烷。

    Process for the polymerization of formaldehyde
    14.
    发明授权
    Process for the polymerization of formaldehyde 失效
    甲醛聚合方法

    公开(公告)号:US3979480A

    公开(公告)日:1976-09-07

    申请号:US533268

    申请日:1974-12-16

    CPC分类号: C08G2/06 C08G2/08

    摘要: Polyformaldehyde is prepared by feeding anhydrous formaldehyde to a reaction medium containing a liquid organic diluent non-solvent for the polyformaldehyde and non-reactive towards the other constituents of the reaction medium, and containing in a dispersed form a copolymer A-B, whereinA is a polylactonic block of recurring units ##EQU1## B is a polylactamic block of recurring units ##EQU2## wherein PM.sub.1 and PM.sub.2 are linear polymethylene chains having from 2 to 13 and 3 to 13 carbon atoms, respectively.

    摘要翻译: 聚甲醛通过将无水甲醛加入到含有聚甲醛的液体有机稀释剂非溶剂并且对反应介质的其它组分是非反应性的反应介质中,并以分散形式包含共聚物AB制备,其中A是聚乳酸 重复单元块--C-(PM1)-O-- PARALLEL OB是重复单元-CC(PM2)-N-- PARALLEL | OH的多交酯嵌段,其中PM1和PM2是具有2至 13和3至13个碳原子。

    Process for the polymerization of formaldehyde
    15.
    发明授权
    Process for the polymerization of formaldehyde 失效
    甲醛聚合方法

    公开(公告)号:US4355153A

    公开(公告)日:1982-10-19

    申请号:US208457

    申请日:1980-11-19

    IPC分类号: C08G2/08 C08L77/02

    CPC分类号: C08G2/08

    摘要: Polyformaldehyde is prepared by polymerizing anhydrous monomeric formaldehyde in an organic, liquid and inert diluent which is a non-solvent for polyformaldehyde, in the presence of a catalyst of the formula: ##STR1## wherein A.sup.(-) is a lactamate group: ##STR2## in which PM is a linear polymethylene chain with from 3 to 13 carbon atoms, possibly substituted with one or more alkyl, cycloalkyl, aryl or alkylaryl radicals, and wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently are an alkyl, cycloalkyl, aryl or alkylaryl radical.

    摘要翻译: 在下式催化剂存在下,将无水单体甲醛聚合在有机,液体和惰性稀释剂(其为聚甲醛的非溶剂)中制备聚甲醛,其中A( - )为乳糖酸盐基团:IMA图 >其中PM是具有3至13个碳原子的直链多亚甲基链,可能被一个或多个烷基,环烷基,芳基或烷基芳基取代,并且其中R 1,R 2,R 3和R 4独立地是烷基,环烷基,芳基或 烷基芳基。

    Process for the recovery of formaldehyde present in waste waters
    16.
    发明授权
    Process for the recovery of formaldehyde present in waste waters 失效
    在废水中回收甲醛的方法

    公开(公告)号:US4088818A

    公开(公告)日:1978-05-09

    申请号:US692408

    申请日:1976-06-03

    IPC分类号: C07D487/18 C07D295/02

    CPC分类号: C07D487/18 C07C45/85

    摘要: Formaldehyde present in a waste water containing lower carboxylic acids is recovered by reacting said waste water at 0.degree. to 90.degree. C. with the amount of ammonia required for converting said formaldehyde into hexamine and the latter is recovered in solid form by evaporating the resulting solution.The solid hexamine thus recovered has a content in lower carboxylic acids not exceeding 0.05 wt.%, is practically free from other impurities and is suited for any conventional use.

    摘要翻译: 含有低级羧酸的废水中存在的甲醛通过使所述废水在0-90℃下与将所述甲醛转化成六胺所需的氨的量进行回收,后者通过蒸发所得溶液而以固体形式回收 。

    PROCESS FOR THE PREPARATION OF ZMS-5 ZEOLITES
    18.
    发明申请
    PROCESS FOR THE PREPARATION OF ZMS-5 ZEOLITES 审中-公开
    制备ZMS-5沸石的方法

    公开(公告)号:US20090053135A1

    公开(公告)日:2009-02-26

    申请号:US11718349

    申请日:2005-10-25

    IPC分类号: C01B39/02 C01B39/04

    CPC分类号: C01B39/40 C01B39/38

    摘要: Process for the synthesis of ZMS-5 zeolites essentially consisting of: a. preparing two aqueous solutions of sodium aluminate and silicate; b. putting the two solutions in contact with each other under stirring at room temperature; c. adding a solution of a mineral acid to solution (a) or to solution (b) or to solution (a)+(b), in such a quantity that the molar ratio OH−/H2O ranges from 0.02 to 0.03; d. adding a quantity of water sufficient for maintaining fluid the reacting mixture and the molar ratio OH−/H2O from 0.017 to 0.022; e. pre-heating the final mixture obtained at the end of steps (a)-(d) at a temperature ranging from 20 to 60° C.; and f. heating the mixture, under stirring, at a temperature ranging from 100 to 200° C.

    摘要翻译: 用于合成基本上由以下组成的ZMS-5沸石的方法:a。 制备两种铝酸钠和硅酸钠水溶液; b。 将两种溶液在室温下搅拌下彼此接触; C。 向溶液(a)或溶液(b)或溶液(a)+(b)中加入无机酸溶液,使得OH- / H 2 O摩尔比为0.02至0.03; d。 加入一定量的足以维持反应混合物的水和OH- / H2O的摩尔比为0.017至0.022; e。 在步骤(a) - (d)末端得到的最终混合物在20至60℃的温度范围内预热; 和f。 在搅拌下,在100〜200℃的温度下加热混合物

    Method of purifying polymerizable organic substances
    19.
    发明授权
    Method of purifying polymerizable organic substances 失效
    可聚合有机物质的净化方法

    公开(公告)号:US3969344A

    公开(公告)日:1976-07-13

    申请号:US195840

    申请日:1971-11-04

    摘要: A process for purifying a polymerisable monomer selected from the group consisting of cyclic ethers, hydrocarbon olefins, vinyl compounds, aldehydes, lactams of the formula: ##EQU1## wherein x is an integer from 3 to 13 and lactones of the formula: ##EQU2## wherein n is an integer of from 1 to 4 and wherein R represents an hydrogen atom, an alkyl group or an aryl group; said process comprising contacting a liquid consisting of said monomer at a temperature of not greater than 130.degree. centigrade and at a pressure sufficient to keep said monomer in liquid form, with a solid absorbent consisting essentially of a porous reticulated macromolecular alkali metal or alkaline earth metal salt of a cationic exchange resin containing carboxylic, sulfonic or phosphoric acid groups, said cationic exchange resin having a specific surface area of at least one square meter per gram and a pore diameter of from 10.sup.1.3 to 10.sup.5 angstroms and recovering the purified monomer.

    摘要翻译: 一种纯化可聚合单体的方法,该可聚合单体选自环醚,烃烯烃,乙烯基化合物,醛,式(NH)(CH 2)x ANGLE | CO)的内酰胺,其中x为3至13的整数, 式:R-CH-(CH 2)n -COO其中n为1〜4的整数,R为氢原子,烷基或芳基; 所述方法包括在不高于130℃的温度和足以使所述单体保持液态的压力下将由所述单体组成的液体与基本上由多孔网状大分子碱金属或碱土金属组成的固体吸收剂 含有羧酸,磺酸或磷酸基团的阳离子交换树脂的盐,所述阳离子交换树脂的比表面积至少为1平方米/克,孔径为101.3至105埃,并回收纯化的单体。

    Bases for lubricating oils and process for their preparation
    20.
    发明授权
    Bases for lubricating oils and process for their preparation 失效
    润滑油基础及其制备方法

    公开(公告)号:US5714656A

    公开(公告)日:1998-02-03

    申请号:US744214

    申请日:1996-11-05

    CPC分类号: C10G69/126 C10G50/02

    摘要: Composition of lubricating oil which comprises: a) a greater portion of synthetic lubricating component or a mixture of synthetic lubricating component and a mineral base for lubricating oils, the synthetic lubricating component being prepared by the oligomerization and subsequent hydrogenation and the possible removal of low-boiling by-products, of a composition of olefins basically consisting of: 1) a mixture of n-olefins having a content of olefins from C.sub.14 to C.sub.17, preferably from C.sub.15 to C.sub.16, of at least 80%, preferably greater than 85%, 2) alpha olefins from C.sub.15 to C.sub.17, preferably basically C.sub.16, the content of the alpha olefin (2) being from 5 to 25% by weight, preferably from 10 to 20%, with respect to the sum of (1)+(2).

    摘要翻译: 润滑油的组成,其包括:a)大部分合成润滑组分或合成润滑组分与润滑油的矿物基质的混合物,所述合成润滑组分通过低聚和随后的氢化制备, 沸石副产物,基本上由以下组成的烯烃组合物:1)具有C14至C17,优选C15至C16的烯烃含量为至少80%,优选大于85%的正构烯烃的混合物, 2)来自C15至C17的α-烯烃,优选基本上为C16,α-烯烃(2)的含量相对于(1)+(2)的总和为5至25重量%,优选10至20重量% )。