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31 条记录 (耗时 0.018 秒)

    Processing aid for polymers
    12.
    发明授权
    Processing aid for polymers 失效
    聚合物加工助剂

    公开(公告)号：US5057575A

    公开(公告)日：1991-10-15

    申请号：US649359

    申请日：1991-02-01

    申请人： George R. Chapman, Jr. ,  Donnan E. Priester ,  Charles W. Stewart

    发明人： George R. Chapman, Jr. ,  Donnan E. Priester ,  Charles W. Stewart

    IPC分类号： C08L23/02 ,  C08L25/06 ,  C08L27/12 ,  C08L67/00 ,  C08L77/00 ,  C08L101/00

    CPC分类号： C08L23/02 ,  C08L101/00 ,  C08L25/06 ,  C08L67/00 ,  C08L77/00 ,  C08L2205/06 ,  C08L27/12

    摘要： Polymer blend composition having improved processibility and comprising:(a) a major portion of a difficultly melt-procesible polymer, and(b) a minor portion of:1 at least an effective amount, to improve processibility, of a fluorocarbon copolymer which at the melt-processing temperature of (a) is either in a melted form if crystalline, or is above its glass transition temperature if amorphous, and(2) at least an effective amount, to improve processibility, of at least one tetrafluoroethylene homopolymer or copolymer of tetrafluoroethylene and at least one monomer copolymerizable therewith, wherein the mole ratio of fluorine to hydrogen is at least 1:1, and which is solid at the melt-processing temperature of (a);masterbatches comprised of the processing aid; and processes utilizing the processing aid.

    摘要翻译： 聚合物共混组合物具有改进的加工性，并且包括：（a）难熔融可聚合物的主要部分，和（b）少量部分：1至少有效量，以提高氟碳共聚物的加工性， （a）的熔融加工温度如果是结晶态，则为熔融形式，或者如果是无定形的，则高于其玻璃化转变温度，和（2）至少有效量，以提高至少一种四氟乙烯均聚物或共聚物的加工性 四氟乙烯和至少一种可与其共聚的单体，其中氟与氢的摩尔比至少为1:1，在（a）的熔融加工温度下为固体; 由加工助剂组成的母料; 以及利用加工助剂的方法。

    Elastomeric compositions
    14.
    发明授权
    Elastomeric compositions 失效
    弹性组合物

    公开(公告)号：US4596855A

    公开(公告)日：1986-06-24

    申请号：US678015

    申请日：1984-12-04

    申请人： Charles W. Stewart

    发明人： Charles W. Stewart

    IPC分类号： C08L21/00 ,  C08L27/12 ,  C08L27/18 ,  C08L27/22 ,  C08L27/16

    CPC分类号： C08L27/12 ,  C08L21/00 ,  C08L27/18

    摘要： An elastomeric composition comprising an elastomer matrix having dispersed therein about 3-30 parts per 100 parts by weight of the elastomer of powdered polytetrafluoroethylene having a number average molecular weight of at least about 250,000 and a surface area of at least 1 m.sup.2 /g which has been treated with about 50-120% of sodium-naphthalene addition compound or another addition compound of an alkali metal required for the alkali metal to react with all the fluorine atoms on the surface of the polytetrafluoroethylene powder.By dispersing such treated polytetrafluoroethylene powder in elastomer matrix, one increases significantly the tear strength of the elastomer, while increasing its modulus only moderately. In this way, the processability of the elastomeric compositions is not adversely affected.

    摘要翻译： 一种弹性体组合物，其包含其中分散有约3-30份的弹性体基质，每100重量份数均分子量为至少约250,000的粉末状聚四氟乙烯弹性体和表面积至少为1m 2 / g，其具有 用大约50-120％的钠 - 萘加成化合物或碱金属的另一加成化合物与聚四氟乙烯粉末表面上的全部氟原子反应。 通过将这种处理的聚四氟乙烯粉末分散在弹性体基体中，可以显着提高弹性体的撕裂强度，同时仅适度增加其模量。 以这种方式，弹性体组合物的加工性不受不利影响。

    Core/shell fluoropolymer compositions
    15.
    发明授权
    Core/shell fluoropolymer compositions 失效
    核/壳含氟聚合物组合物

    公开(公告)号：US4469846A

    公开(公告)日：1984-09-04

    申请号：US496537

    申请日：1983-05-20

    申请人： Ausat A. Khan ,  Charles W. Stewart

    发明人： Ausat A. Khan ,  Charles W. Stewart

    IPC分类号： C08F259/00 ,  C08F259/08 ,  C08L51/06

    CPC分类号： C08F259/08

    摘要： Core/shell fluoropolymer compositions in particulate form, wherein the core is a highly crystalline polymer such as, for example, tetrafluoroethylene, and the shell is an elastomeric fluoropolymer such as, for example, a vinylidene fluoride/hexafluoropropene copolymer, optionally also containing a cure site monomer are outstanding additives for uncured fluoroelastomer compositions, which after curing in the presence of dispersed core/shell fluoropolymers have improved tear strength, tear strength to modulus ratio, and certain other physical properties.

    摘要翻译： 颗粒形式的核/壳含氟聚合物组合物，其中核是高度结晶的聚合物，例如四氟乙烯，壳是弹性体含氟聚合物，例如偏二氟乙烯/六氟丙烯共聚物，任选还含有固化 未固化含氟弹性体组合物的突出添加剂，其在分散的核/壳含氟聚合物存在下固化后具有改善的撕裂强度，撕裂强度与模量比以及某些其它物理性质。

    Upholstered furniture having improved flame resistance
    16.
    发明授权
    Upholstered furniture having improved flame resistance 失效
    软木家具具有改善的阻燃性

    公开(公告)号：US4294489A

    公开(公告)日：1981-10-13

    申请号：US886260

    申请日：1978-03-13

    申请人： Colin Anolick ,  Vivian M. Robinson ,  Charles W. Stewart, Sr.

    发明人： Colin Anolick ,  Vivian M. Robinson ,  Charles W. Stewart, Sr.

    IPC分类号： D06M15/693 ,  D06M23/04 ,  D06N3/10 ,  A47C5/12 ,  B32B3/26

    CPC分类号： D06M15/693 ,  D06M23/04 ,  D06N3/10 ,  Y10S297/05 ,  Y10S428/92

    摘要： Flame resistance of upholstered furniture is significantly improved by interposing between the cover fabric and the padding or applying to the top side of the cover fabric a layer of neoprene foam capable of forming when exposed to a burning cigarette or under the conditions of a standard flame spread test, a thermally insulating char which does not smolder, and which maintains its structural integrity. The neoprene foam must be so formulated that it also is capable of evolving at combustion temperature sufficient amount of water to efficiently cool the affected area. Normally, the latex from which the foam is prepared is formulated with a char promoter and a hydrated inorganic compound. Upholstered furniture of this invention passes a burning cigarette test and performs extremely well in the flame spread test.

    摘要翻译： 软垫家具的耐火性通过在覆盖织物和衬垫之间插入或涂覆到覆盖织物的顶侧上，能够在暴露于燃烧的香烟时或在标准火焰蔓延的条件下施加能够形成的氯丁橡胶泡沫层而显着改善 测试，不闷热的绝热炭，并保持其结构完整性。 氯丁橡胶泡沫必须如此配制，以便它也能够在燃烧温度下放出足够量的水以有效地冷却受影响的区域。 通常，制备泡沫的胶乳用炭促进剂和水合无机化合物配制。 本发明的软体家具通过燃烧的卷烟测试，并在火焰蔓延测试中表现非常好。