Modified block copolymers
    11.
    发明授权
    Modified block copolymers 失效
    改性嵌段共聚物

    公开(公告)号:US4882384A

    公开(公告)日:1989-11-21

    申请号:US150579

    申请日:1988-02-01

    IPC分类号: C08F8/42

    CPC分类号: C08F8/42

    摘要: A thermoplastic polymer having good tensile strength at elevated temperatures is obtained by modifying a block copolymer composed of a conjugated diene compound and an alkenyl arene compound. The block copolymer is first selectively hydrogenated and thereafter modified by grafting silicon or boron containing functional groups primarily in the alkenyl arene block via metalation. Each silicon containing functional group preferably contains at least two functional groups which allow crosslinking by condensation reactions.

    摘要翻译: 通过改性由共轭二烯化合物和链烯基芳烃化合物组成的嵌段共聚物,可以获得在高温下具有良好拉伸强度的热塑性聚合物。 首先将嵌段共聚物选择性氢化,然后通过金属化接枝主要在烯基芳烃嵌段中的含硅或含硼官能团进行改性。 每个含硅官能团优选含有至少两个允许通过缩合反应进行交联的官能团。

    Method for producing coupled asymmetric polymers
    12.
    发明授权
    Method for producing coupled asymmetric polymers 失效
    偶联不对称聚合物的制备方法

    公开(公告)号:US5360875A

    公开(公告)日:1994-11-01

    申请号:US120116

    申请日:1993-09-10

    CPC分类号: C08F297/044 C08F297/046

    摘要: A process for preparing a coupled asymmetric block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene which comprises:(a) adding sufficient anionic polymerization initiator to the vinyl aromatic hydrocarbon monomer to start polymerization of the vinyl aromatic hydrocarbon,(b) polymerizing the vinyl aromatic hydrocarbon for a time sufficient to form a first set of vinyl aromatic hydrocarbon blocks having a desired molecular weight,(c) adding sufficient anionic polymerization initiator to start polymerization of a second set of vinyl aromatic hydrocarbon blocks,(d) completing the polymerization of the vinyl aromatic hydrocarbon for a time such that the first set of vinyl aromatic hydrocarbon blocks continues to grow to the desired molecular weight and the second set of vinyl aromatic hydrocarbon blocks grows to a desired smaller molecular weight,(e) adding a conjugated diene and polymerizing it on the ends of the vinyl aromatic hydrocarbon blocks for a time sufficient to form vinyl aromatic hydrocarbon-conjugated diene arms of the desired molecular weight, and(f) adding a coupling agent and coupling the arms to form the asymmetric block copolymer.

    摘要翻译: 一种制备乙烯基芳族烃和共轭二烯的偶联不对称嵌段共聚物的方法,其包括:(a)向乙烯基芳族烃单体加入足够的阴离子聚合引发剂以开始乙烯基芳烃的聚合,(b) 芳烃在足以形成具有所需分子量的第一组乙烯基芳族烃嵌段的时间内,(c)加入足够的阴离子聚合引发剂以开始聚合第二组乙烯基芳族烃嵌段,(d)完成聚合反应 乙烯基芳族烃一段时间,使得第一组乙烯基芳族烃嵌段继续生长至所需分子量,第二组乙烯基芳族烃嵌段生长至所需的较小分子量,(e)加入共轭二烯和 在乙烯基芳族烃嵌段的末端聚合足够长的时间 以形成所需分子量的乙烯基芳族烃 - 共轭二烯臂,和(f)加入偶联剂并偶联臂以形成不对称嵌段共聚物。

    Styrene-isoprene-styrene block copolymer composition for low viscosity
low temperature hot melt adhesives
    13.
    发明授权
    Styrene-isoprene-styrene block copolymer composition for low viscosity low temperature hot melt adhesives 失效
    苯乙烯 - 苯乙烯 - 苯乙烯嵌段共聚物组合物低粘度低温热熔胶

    公开(公告)号:US5118762A

    公开(公告)日:1992-06-02

    申请号:US510905

    申请日:1990-04-11

    申请人: Steven S. Chin

    发明人: Steven S. Chin

    CPC分类号: C08F297/046 C09J153/02

    摘要: A low viscosity low temperature hot melt adhesive which contains a predominantly branched styrene-isoprene-styrene block copolymer composition comprised of linear polymeric blocks wherein the polystyrene block molecular weight is greater than about 12,000, the polystyrene content is about 35% or less by weight of the block copolymer composition and the molecular weight of the block copolymer composition and the coupling efficiency are chosen so that the melt viscosity of the adhesive made with the composition is less than about 3100 cps.

    Hot melt adhesive containing a silane grafted hydrogenated block polymer

    公开(公告)号:US4783504A

    公开(公告)日:1988-11-08

    申请号:US835090

    申请日:1986-02-28

    摘要: A sealant composition comprising:(a) 100 parts by weight of a silane functionalized polymer component which is prepared by reacting enough silane of the general formula R R'.sub.n SiY.sub.3-n (where n equals 0, 1 or 2 and where R is a non-hydrolyzable organic group which is capable of grafting onto the polymer, R' is a non-hydrolyzable organic group incapable of grafting onto the polymer and Y is a hydrolyzable organic group) with a polymer component to thereby functionalize the polymer component and provide a resultant sealant composition with adhesion which is resistant to deterioration in the presence of water;said polymer component comprising an A'B' block copolymer, a multiblock copolymer having at least two end blocks A and at least one midblock B, or mixtures of an A'B' block copolymer and the multiblock copolymer wherein:the A' and A blocks comprise monoalkenyl arene blocks and the B' and B blocks comprise substantially completely hydrogenated conjugated diene polymer blocks, and the average molecular weight of the A and A' blocks is greater than the minimum molecular weight needed to obtain microphase separation and domain formation of the A and A' blocks, and is less than the maximum molecular weight which would render the polymer incapable of being melt processed;the multiblock copolymer comprises a monoalkenyl arene content no more than a maximum weight percent needed to retain a modulus suitable as a sealant for the resultant composition and no less than a minimum weight percent needed to obtain the desired phase separation and the desired minimum cohesive strength for the resultant composition;(b) an amount of a midblock compatible component wherein said midblock compatible component is at a concentration to maintain the resultant composition in a plyable condition at room temperture and to maintain the glass transition temperature of the resultant composition below 10.degree. C.

    Polyphenylene ether/thermoplastic elastomer block copolymer blends for
adhesives and sealants
    17.
    依法登记的发明
    Polyphenylene ether/thermoplastic elastomer block copolymer blends for adhesives and sealants 失效
    用于粘合剂和密封剂的聚苯醚/热塑性弹性体嵌段共聚物共混物

    公开(公告)号:USH1387H

    公开(公告)日:1994-12-06

    申请号:US149594

    申请日:1993-11-09

    摘要: The present invention provides a method for making a method for making high service temperature rubber compound, hot melt adhesive or sealant compositions by combining a polyphenylene ether resin with an elastomeric block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene, which comprises (a) making a masterbatch of 2 to 50 phr of a polyphenylene ether having an intrinsic viscosity of 0.3 deciliters per gram or more and 100 phr of said block copolymer by extruding them together with 2 to 30 phr of an endblock compatible resin, and (b) optionally mixing the masterbatch with more of the block copolymer.

    摘要翻译: 本发明提供一种通过将聚苯醚树脂与乙烯基芳族烃和共轭二烯的弹性体嵌段共聚物组合而制备高使用温度的橡胶化合物,热熔性粘合剂或密封剂组合物的方法,该方法包括(a) 通过将2〜30phr的端嵌段相容性树脂与2-30phr的端嵌段相容性树脂一起挤出,得到2〜50phr特性粘度为0.3分升/克和100phr的所述嵌段共聚物的聚苯醚的母料,(b) 将母料与更多的嵌段共聚物混合。

    Sealant composition
    19.
    依法登记的发明
    Sealant composition 失效
    密封胶组成

    公开(公告)号:USH758H

    公开(公告)日:1990-04-03

    申请号:US137036

    申请日:1987-12-23

    申请人: Steven S. Chin

    发明人: Steven S. Chin

    摘要: A sealant composition comprises a functionalized polymer component which is prepared by grafting enough carboxylic acid, dicarboxylic acid, or derivative thereof onto a polymer component to thereby functionalize the polymer component and provide a resultant sealant composition with adhesive which is resistant to deterioration in the presence of water, said polymer component comprising a multiblock copolymer having at least two end blocks A and at least one midblock B, wherein the A blocks comprise monoalkenyl arene blocks and the B blocks comprise substantially completely hydrogenated conjugated diene polymer blocks.