Bimodal cured intermixed polymeric networks which are stable at high
temperature
    1.
    发明授权
    Bimodal cured intermixed polymeric networks which are stable at high temperature 失效
    在高温下稳定的双峰固化混合聚合物网络

    公开(公告)号:US5331018A

    公开(公告)日:1994-07-19

    申请号:US935863

    申请日:1992-08-26

    CPC分类号: C08G77/442 C08F283/00

    摘要: The present invention is directed to a non-emissive, bimodal cured polymeric network which has an onset degradation temperature that is about 100.degree. C. above the onset degradation temperature of a base polymer. The novel cured polymeric network comprises the cured reaction product of the following ingredients: (a) combination of one or more liquid carrier monomers or prepolymers which combination is reactive to form a base polymer by exposure to ultraviolet (UV) radiation in the presence of a UV photosensitizer at a temperature, T.sub.uv ; and (b) between about 10 and 100 wt-% based on ingredient (a) of a combination of one or more monomers or prepolymers which combination is reactive to form a cured high temperature stable polymer by heating at a temperature, T.sub..DELTA.. Ingredient (b) is soluble or dispersible in ingredient (a) at a temperature, T.sub.s, wherein T.sub.s is equal to or lower than T.sub.uv, and T.sub.uv is at least about 50.degree. C. lower than T.sub..DELTA..

    摘要翻译: 本发明涉及一种非发射双峰固化的聚合物网络,其具有高于基础聚合物的起始降解温度约100℃的起始降解温度。 新型固化的聚合物网络包括以下成分的固化反应产物:(a)一种或多种液体载体单体或预聚物的组合,其组合是通过暴露于紫外线(UV)辐射在有 UV光敏剂在温度下,Tuv; 和(b)基于组分(a)的一种或多种单体或预聚物的组合的约10至100重量%,所述组合通过在温度T DELTA下加热而形成固化的高温稳定聚合物。 成分(b)在成分(a)中可溶或可分散于温度Ts,其中Ts等于或低于Tuv,Tuv比T DELTA低至少约50℃。

    Flame-retardant resin compositions
    4.
    发明授权
    Flame-retardant resin compositions 失效
    阻燃树脂组合物

    公开(公告)号:US4159371A

    公开(公告)日:1979-06-26

    申请号:US783533

    申请日:1977-04-01

    CPC分类号: C08K5/03 C08F263/06

    摘要: This specification discloses that certain polychlorinated or polybrominated aromatic hydrocarbon compounds can be incorporated in thermosetting polymer compositions to make the thermosetting compositions flame retardant without injuring the desirable physical and electrical properties of the thermosetting compositions when in the thermoset state. These polyhalogenated aromatic hydrocarbons are apparently caused to reset into the thermosetting composition, provided there is a minimum of 1 mol of a polyunsaturated monomer containing carbon to carbon unsaturation for each 3 mols of polychlorinated aromatic hydrocarbons. The thermosetting compositions generally contain a polyunsaturated monomer, a polyunsaturated polymer with carbon to carbon double bond unsaturation or a polyphenylene ether polymer which may be used in place of some or all of the polyunsaturated polymer, and a polyhalogenated aromatic hydrocarbon, containing at least 50% by weight combined chlorine or bromine and whose molecular weight is greater than 200. These thermosetting compositions can be heat cured or thermoset by a free radical initiator at a temperature of at least 130.degree. C., and can contain pigments, reinforcing fibers, release agents, coupling agents, and other incidental amounts of additives commonly used in thermosetting resin compositions.

    摘要翻译: 本说明书公开了某些多氯代或多溴芳烃化合物可以引入热固性聚合物组合物中以使热固性组合物阻燃,而在热固性状态下不会损害热固性组合物所需的物理和电学性质。 显然,这些多卤代芳香烃被重新设置为热固性组合物,条件是每3摩尔多氯代芳烃含有至少1摩尔含有碳 - 碳不饱和度的多不饱和单体。 热固性组合物通常含有多不饱和单体,具有碳 - 碳双键不饱和键的多不饱和聚合物或可用于代替部分或全部多不饱和聚合物的聚苯醚聚合物,和含有至少50% 重量的组合氯或溴并且其分子量大于200.这些热固性组合物可以在至少130℃的温度下通过自由基引发剂热固化或热固化,并且可以含有颜料,增强纤维,脱模剂 ,偶联剂和其它常用量的热固性树脂组合物中常用的添加剂。

    Diallyl terephthalate prepolymer and process for producing seam
    7.
    发明授权
    Diallyl terephthalate prepolymer and process for producing seam 失效
    对苯二甲酸二烯丙酯预聚物和生产接缝的方法

    公开(公告)号:US5003020A

    公开(公告)日:1991-03-26

    申请号:US235599

    申请日:1988-08-24

    IPC分类号: C08F18/18

    CPC分类号: C08F18/18

    摘要: A diallyl terephthalate prepolymer consisting essentially of diallyl terephthalate monomer units, having(a) 10 or less of the monomer units in the carbon-carbon bonded molecular chain portion which is composed of the allyl groups of the monomer units, and either(b) an unsaturation in a range of from 40 to 70, as represented by an iodine value determined by the Wijs method,(c) a number-average molecular weight in a range of from 6,000 to 10,000 as polystyrene, and a weight-average molecular weight in a range of from 10,000 to 70,000 as polystyrene, both being determined by gel permeation chromatography, and(d) a melt viscosity in a range of from 30,000 to 90,000 CP at 170.degree. C., as determined by a Koka flow tester, or(b) an unsaturation in a range of from 50 to 80, as represented by an iodine value determined by the Wijs method,(c) a number-average molecular weight in a range of from 8,000 to 20,000 as polystyrene, and a weight-average molecular weight in a range of from 30,000 to 90,000 as polystyrene, both being determined by gel permeation chromatography, and(d) a melt viscosity in a range of from 20,000 to 90,000 CP at 130.degree. C., as determined by a Koka flow tester.

    Process for preparing diallyl phthalate latex
    8.
    发明授权
    Process for preparing diallyl phthalate latex 失效
    邻苯二甲酸二烯丙酯胶乳的制备方法

    公开(公告)号:US3975349A

    公开(公告)日:1976-08-17

    申请号:US540441

    申请日:1975-01-13

    CPC分类号: D21H17/36 C08F18/18

    摘要: A process for preparing a diallyl phthalate latex which comprises using in proportions of a total of 30 - 100 weight parts of monomer and a total of 0.3 - 10.0 weight parts of an anionic surfactant to a total of 100 weight parts of water, andI. carrying out the emulsion polymerization of the following emulsion polymerization system, i.e., an emulsion polymerization system comprisingA. water in an amount of 50 - 70 weight % of the total amount thereof,B. monomer in an amount of 10 - 20 weight % of the total amount thereof, said monomer being selected from the group consisting of a diallyl phthalate monomer and a diallyl phthalate-containing monomeric mixtureC. said surfactant in an amount of 10 - 20 weight % of total amount thereof, andD. a radical catalyst in toto; and, thenIi. at a period after the degree of polymerization has reached 50 weight % and before completion of the polymerization, furthering the emulsion polymerization reaction while slowly adding an additional emulsion polymerization system containing the following components but not containing said radical catalyst:A. water remaining of the total amount thereofB. monomer remaining of the total amount thereof, andC. said surfactant remaining of the total amount thereof.

    摘要翻译: 一种制备邻苯二甲酸二烯丙酯胶乳的方法,其包括使用总共30-100重量份单体和总共0.3-10.0重量份阴离子表面活性剂至总计100重量份水的比例,和I. 进行以下乳液聚合体系的乳液聚合,即包含A的乳液聚合体系。以50-70重量份的水,其总量的重量百分比为B,单位为10-20重量% 总共数量,由包含二元酚类单体和含二苯甲基单体单体混合物的组选择的所述单体C.以10-20重量%的总重量计的表面活性剂和D.总量为D.的放射性催化剂 IN TOTO; 和,那么二。 在聚合度达到50重量%之后并且在聚合完成之前的一段时间,在缓慢加入含有以下组分但不含所述自由基催化剂的另外的乳液聚合体系的同时进一步进行乳液聚合反应:

    Diallyl isophthalate encapsulating compositions and process for preparing the same
    9.
    发明授权
    Diallyl isophthalate encapsulating compositions and process for preparing the same 失效
    间苯二甲酸二烯丙酯包封组合物及其制备方法

    公开(公告)号:US3903027A

    公开(公告)日:1975-09-02

    申请号:US46913374

    申请日:1974-05-13

    摘要: Disclosed in the application are diallyl isophthalate encapsulating compositions, comprising: A. A THERMOSETTING DIALLYL ISOPHTHALATE PREPOLYMER CHARACTERIZED AS HAVING A VISCOSITY OF LESS THAN ABOUT 40 C.P.S. AT 25*C in a 50 percent solution of methyl ethyl ketone, said prepolymer being present in said composition in an amount ranging up to about 35 percent, by weight, B. A SUBSTANTIALLY PURE INERT FILLER, C. A FREE RADICAL POLYMERIZATION INITIATOR PRESENT IN AN AMOUNT SUFFICIENT TO PROMOTE THERMOSETTING OF SAID PREPOLYMER AT ELEVATED TEMPERATURES, AND D. A SMALL BUT EFFECTIVE AMOUNT OF A MOLD RELEASE AGENT, SAID ENCAPSULATING COMPOSITION BEING CHARACTERIZED AS HAVING A Brabender melt viscosity at 150*C in minimum torque of from about 30 to about 100 meter-grams and capable of providing, when cured, a substantially uniform Coefficient of Thermal Expansion at elevated temperatures such that the Coefficient of Thermal Expansion of the cured composition is less than about 45 X 10 6 In/In/*C. at 185*C.

    摘要翻译: 本申请中公开的是间苯二甲酸二烯丙酯包封组合物,其包含: