Polymerization of chloroprene
    2.
    发明授权
    Polymerization of chloroprene 失效
    氯丁二烯的聚合

    公开(公告)号:US4839447A

    公开(公告)日:1989-06-13

    申请号:US223092

    申请日:1988-07-22

    CPC分类号: C08F36/18

    摘要: Storage-stable polychloroprene is obtained, using a polymerization initiator comprising a mixture of(1) a redox system comprising(a) a reducing agent selected from the group consisting of(i) sodium dithionite,(ii) formamidine sulphinic acid, and(iii) a mixture from (i) and (ii),(b) potassium peroxodisulphate as an oxidizing agent and, optionally,(2) sodium anthraquinone-.beta.-sulphonate as a co-activatorin the presence of oxygen, wherein from 10 to 90 by weight of the initiator are present at the commencement of polymerization and the remainder is added during the polymerization, and after a certain degree of conversion the reducing agent is the only component of redox system (1) which remains to be added.

    摘要翻译: 使用包含(1)氧化还原体系的混合物的聚合引发剂获得存储稳定的聚氯丁二烯,所述氧化还原体系包含(a)选自(i)连二亚硫酸钠,(ii)甲脒亚磺酸和(iii) )来自(i)和(ii)的混合物,(b)过氧二硫酸钾作为氧化剂,和任选地(2)在氧气存在下作为共活化剂的蒽醌-β-磺酸钠,其中10至90 重量的引发剂在聚合开始时存在,并且在聚合过程中加入剩余物,并且在一定程度的转化后,还原剂是剩余添加的氧化还原体系(1)的唯一组分。

    Polymerization of chloroprene
    3.
    发明授权
    Polymerization of chloroprene 失效
    氯丁二烯的聚合

    公开(公告)号:US4786698A

    公开(公告)日:1988-11-22

    申请号:US132975

    申请日:1987-12-15

    CPC分类号: C08F36/18

    摘要: Gel-free polychloroprene is obtained, at high monomer conversions, using a polymerization initiator comprising sodium dithionite or a mixture of sodium dithionite with formamidinesulphinic acid or with potassium peroxydisulphate or with formamidinesulphinic acid and potassium peroxodisulphate or with potassium peroxodisulphate and sodium anthraquinon-.beta.-sulphonate or with formamidinesulphinic acid and potassium peroxodisulphate and sodium anthraquinone-.beta.-sulphonate, and in the presence of oxygen and a chain transfer agent when 30 to 90% of the initiator is present at the commencement of polymerization and the remainder is added in portions during the polymerization, only further sodium dithionite being added at a conversion >60% in the case of an initiator combination, and when 20 to 80% by weight of the total amount of chain transfer agents is present before or at the commencement of polymerization and the remaining amount is added in one or more parts at monomer conversions of greater than 20%.

    摘要翻译: 使用包含连二亚硫酸钠或连二亚硫酸钠与甲酰胺亚磺酸钠或与过氧二硫酸钾或与甲脒亚磺酸和过氧二硫酸钾或与过氧二硫酸钾和蒽醌-β-磺酸钠的混合物的聚合引发剂,以高单体转化率获得无凝胶的聚氯丁二烯 或与甲酰胺亚磺酸和过二硫酸钾和蒽醌-β-磺酸钠反应,并且在氧和链转移剂存在下,当聚合开始时存在30至90%的引发剂,其余部分在 在引发剂组合的情况下,只有进一步的连二亚硫酸钠以60%的转化率加入,并且当在聚合开始之前或在聚合开始时存在20至80重量%的链转移剂的总量 在单体转化时,一个或多个部分加入量 大于20%。

    Process for polymerization of chloroprene
    4.
    发明授权
    Process for polymerization of chloroprene 失效
    氯丁二烯聚合方法

    公开(公告)号:US4975501A

    公开(公告)日:1990-12-04

    申请号:US399333

    申请日:1989-08-28

    CPC分类号: C08F36/18

    摘要: The polymerization of chloroprene leads to non-colored products when a mixture of 2.0 to 5.0% by weight of a salt of disproportionated abietic acid and 0.1 to 1.0% by weight, in each case relative to the total amount of monomer, of a compound of the formula ##STR1## in which R.sub.1 and R.sub.2, independently of one another, denote hydrogen or CH.sub.3,m denotes a number from 0 to 14,n denotes a number from 0 to 13,p denotes a number from 0 to 2, andy denotes hydrogen, Na or K, andthe total number of aliphatic carbon atoms is 11 to 15,is used as emulsifier, the emulsifiers having the advantage of being biologically degradable.

    摘要翻译: 氯丁二烯的聚合导致当2.0%至5.0%重量比例的歧化松香酸和0.1至1.0%重量(在每种情况下相对于单体的总量)的混合物的混合物中的无色产物为 式中,R 1和R 2彼此独立地表示氢或CH 3,m表示0〜14的数,n表示0〜13的数,p表示0〜2的数,y表示 表示氢,Na或K,脂族碳原子的总数为11〜15,用作乳化剂,乳化剂具有生物可降解的优点。

    Graft polymers of vinyl phosphonic acid esters
    5.
    发明授权
    Graft polymers of vinyl phosphonic acid esters 失效
    乙烯基膦酸酯的接枝聚合物

    公开(公告)号:US4028434A

    公开(公告)日:1977-06-07

    申请号:US604680

    申请日:1975-08-14

    IPC分类号: C08F283/06 C08L43/00

    CPC分类号: C08F283/06

    摘要: The instant invention relates to graft polymers of vinyl phosphonic acid esters, optionally together with nitrogen-containing polymerizable vinyl compounds, on polyalkylene glycols and to a process for their production. The polymers so produced necessarily contain phosphorus and, optionally, nitrogen in the molecule. The polymers are rendered flameproof by the phosphorus and, in addition, self-extinguishing by the nitrogen.

    摘要翻译: 本发明涉及乙烯基膦酸酯,任选与含氮可聚合乙烯基化合物一起在聚亚烷基二醇上的接枝聚合物及其生产方法。 如此生产的聚合物必须含有磷和任选地在分子中的氮。 聚合物由磷进行防火,另外由氮自熄。

    Mixtures of chloroprene polymers and the production thereof
    6.
    发明授权
    Mixtures of chloroprene polymers and the production thereof 失效
    氯丁二烯聚合物的混合物及其制备

    公开(公告)号:US4443582A

    公开(公告)日:1984-04-17

    申请号:US379919

    申请日:1982-05-19

    摘要: This invention relates to a polychloroprene elastomer distinguished by good processing properties and high tensile strength in the form of a polychloroprene mixture containing a sol polymer and a gel polymer in a ratio, by weight, of from 1:4 to 9:1, characterized in that both polymers have been produced in the presence of from 2.5 to 4.0 parts, by weight, of the potassium salt of disproportionated abietic acid (expressed as acid), from 0.3 to 1.0 part, by weight, of a condensation product of naphthalene sulphonic acid and formaldehyde and from 0.1 to 1.5 parts, by weight, of potassium hydroxide, based in each case on 100 parts, by weight, of monomer, and in that the gel polymer is a copolymer of chloroprene and from 1.5 to 2.5 mole percent, based on total monomer, of a diester corresponding to the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen, chlorine or C.sub.1 -C.sub.4 alkyl; andX represents C.sub.2 -C.sub.10 alkylene.

    摘要翻译: 本发明涉及一种聚氯丁二烯弹性体,其特征在于以包含溶胶聚合物和凝胶聚合物的重量比为1:4至9:1的聚氯丁二烯混合物形式的良好加工性能和高拉伸强度,其特征在于 两种聚合物已经在2.5至4.0重量份歧化松香酸钾盐(以酸​​表示)的存在下制备,0.3至1.0重量份的萘磺酸的缩合产物 和甲醛,和0.1至1.5重量份的氢氧化钾,基于每种情况下为100重量份的单体,并且凝胶聚合物是氯丁二烯和基于1.5至2.5摩尔%的基于 对于相应于以下通式的二酯的总单体:其中R 1和R 2表示氢,氯或C 1 -C 4烷基; X表示C2-C10亚烷基。

    Continuous polymerization of chloroprene
    7.
    发明授权
    Continuous polymerization of chloroprene 失效
    氯丁二烯的连续聚合

    公开(公告)号:US4521576A

    公开(公告)日:1985-06-04

    申请号:US556580

    申请日:1983-11-30

    CPC分类号: C08F36/18

    摘要: A process for the production of storable polychloroprene having reduced tackiness on mixing rolls by the continuous polymerization of chloroprene and, optionally, up to 50%, by weight, of a monomer copolymerizable with chloroprene in aqueous alkaline emulsion in the presence of emulsifiers and radical initiators at temperatures of from 0.degree. to 70.degree. C., followed by isolation, characterized in that from 90 to 150 parts, by weight, of water, from 2.5 to 4.0 parts, by weight of a potassium salt of disproportionated abietic acid (based on acid), from 0.3 to 1.0 parts, by weight, of a condensation product of naphthalene sulphonic acid and formaldehyde and from 0.2 to 1.5 parts, by weight, of potassium hydroxide, all the quantities being based on 100 parts, by weight, of monomer, are used for the polymerization reaction.

    摘要翻译: 在乳化剂和自由基引发剂的存在下,通过连续聚合氯丁二烯和任选地至多50重量%的可与氯丁二烯共聚的单体在水性碱性乳液中连续聚合制备具有降低的混合辊粘性的方法 在0℃至70℃的温度下,然后分离,其特征在于,90至150重量份的水,2.5至4.0重量份歧化松香酸钾盐(基于 酸),0.3至1.0重量份的萘磺酸和甲醛的缩合产物和0.2至1.5重量份的氢氧化钾,所有量基于100重量份的单体 ,用于聚合反应。

    Polychloroprene mixtures and the use thereof
    9.
    发明授权
    Polychloroprene mixtures and the use thereof 失效
    聚氯丁二烯混合物及其用途

    公开(公告)号:US4485216A

    公开(公告)日:1984-11-27

    申请号:US529389

    申请日:1983-09-06

    CPC分类号: C08L11/00 C08L2205/02

    摘要: Solid polychloroprene mixtures consisting of sol and gel polymer, wherein the sol component consists of a copolymer of chloroprene and from 0.75 to 0.32% by weight of sulphur, based on the total quantity of unsaturated compounds of the sol polychloroprene, and the gel component consists of a copolymer of chloroprene, from 0.4 to 1.0% by weight of sulphur, based on the total quantity of unsaturated compounds of the gel polychloroprene and from 7.5.times.10.sup.-3 to 3.0.times.10.sup.-2 mols, based on 100 g of the total quantity of monomer of the gel polychloroprene, of a compound corresponding to the general formula ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom or C.sub.1 -C.sub.4 alkyl group, and X represents a C.sub.2 -C.sub.10 alkylene group,are suitable for the production by extrusion and by calandering of rubber articles which may be subjected to high strains.

    摘要翻译: 由溶胶和凝胶聚合物组成的固体聚氯丁二烯混合物,其中溶胶组分由氯丁二烯和0.75至0.32重量%硫的共聚物组成,基于溶胶聚氯丁二烯的不饱和化合物的总量,凝胶组分由 基于凝胶聚氯丁二烯的不饱和化合物的总量和基于100g单体总量的7.5×10 -3至3.0×10 -2摩尔的氯丁二烯共聚物,为0.4至1.0重量%的硫 的凝胶聚氯丁二烯,其通式为:其中R1和R2各自表示氢原子或C1-C4烷基,X代表C2-C10亚烷基,适用于通过挤出和 通过压缩可能经受高应变的橡胶制品。

    Production of sulfur-modified solid chloroprene rubbers
    10.
    发明授权
    Production of sulfur-modified solid chloroprene rubbers 失效
    生产硫改性固体氯丁橡胶

    公开(公告)号:US4482676A

    公开(公告)日:1984-11-13

    申请号:US473697

    申请日:1983-03-09

    摘要: Vulcanizable, elastomeric chloroprene/sulfur copolymers having viscosities of from 60 to 35 ME, strengths of greater than 20 MPa and sulfur contents of from about 0.3 to 0.45% by weight are obtained by polymerizing chloroprene in the presence of from 0.05 to 0.40% by weight of sulfur to form a latex I, polymerizing chloroprene in the presence of from 0.5 to 1.5% by weight of sulfur to form a latex II, mixing latices I and II, optionally together with other sulfur-modified polychloroprene latices, in a ratio of from 4:1 to 1:4 (based in each case on solids) and peptizing the mixture, followed by working up to form the solid rubber, the percentages quoted being based on the quantity of monomer.

    摘要翻译: 通过在0.05至0.40重量%的存在下聚合氯丁二烯,可获得粘度为60至35MW,强度大于20MPa,硫含量为约0.3至0.45重量%的可硫化的弹性体氯丁二烯/硫共聚物 的硫以形成胶乳I,在0.5至1.5重量%的硫存在下聚合氯丁二烯以形成胶乳II,任选地将胶乳I和II与其它硫改性的聚氯丁二烯胶乳混合,其比例为 4:1至1:4(基于每种情况下为固体)和胶体化混合物,然后加工形成固体橡胶,所引用的百分比基于单体的量。