Preparation of poly(arylene sulfide)s from poly(arylene sulfide
disulfide)
    4.
    发明授权
    Preparation of poly(arylene sulfide)s from poly(arylene sulfide disulfide) 失效
    由聚(亚芳基硫醚二硫化物)制备聚(亚芳基硫醚)

    公开(公告)号:US5256742A

    公开(公告)日:1993-10-26

    申请号:US957854

    申请日:1992-10-08

    CPC classification number: C08G75/0286 C08G75/0272

    Abstract: A process for preparing a poly(arylene sulfide) and copolymer thereof from a poly(arylene sulfide disulfide) is provided which comprises contacting the poly(arylene sulfide disulfide) with a polyhalo-substituted cyclic compound having unsaturation between adjacent ring carbon atoms and having halogen atoms attached to the ring carbon atoms in a polar organic compound and a basic compound at an elevated temperature. Alternatively, the poly(arylene sulfide disulfide) can be substantially dissolved in the polar organic solvent at elevated temperature to form fragments which can be contacted with the polyhalo-substituted cyclic compound in a polar organic compound and a basic compound at an elevated temperature. The fragments also can be isolated, recovered and then contacted with the polyhalo-substituted cyclic compound in a polar organic compound and a basic compound at an elevated temperature.

    Abstract translation: 提供了一种由聚(亚芳基硫醚二硫化物)制备聚(亚芳基硫醚)及其共聚物的方法,其包括使聚(亚芳基硫醚二硫化物)与相邻环碳原子之间具有不饱和键并具有卤素的多卤取代环状化合物 在极性有机化合物中与环碳原子连接的原子和升高的温度下的碱性化合物。 或者,聚(亚芳基硫醚二硫化物)可以在升高的温度下基本上溶解在极性有机溶剂中,形成可在高温下与极性有机化合物和碱性化合物中的多卤取代的环状化合物接触的片段。 片段也可以分离,回收,然后在高温下与极性有机化合物和碱性化合物中的多卤取代的环状化合物接触。

    Low gloss powder coatings
    7.
    发明授权
    Low gloss powder coatings 失效
    低光泽粉末涂料

    公开(公告)号:US06737467B1

    公开(公告)日:2004-05-18

    申请号:US09717413

    申请日:2000-11-21

    CPC classification number: C09D5/032 Y10S524/904

    Abstract: Powder coating compositions containing 5 to 60 wt % of spherical or near spherical particles having a median diameter of greater than 10, and most preferably of greater than 15 microns exhibit lower gloss without undesirable side effects such as loss of coating flow or creation of an “orange peel” effect.

    Abstract translation: 含有5至60重量%的中等直径大于10,最优选大于15微米的球形或近球形颗粒的粉末涂料组合物表现出较低的光泽度,而没有不希望的副作用,例如涂层流动的损失或“ 橙皮“效果。

    Coating powder for high temperature resistant coatings
    10.
    发明授权
    Coating powder for high temperature resistant coatings 失效
    高温涂料用涂料粉末

    公开(公告)号:US6034178A

    公开(公告)日:2000-03-07

    申请号:US163962

    申请日:1998-09-30

    CPC classification number: C09D183/04 Y10S524/904 Y10S525/934

    Abstract: A coating powder for producing a high temperature resistant coating has a resin system which comprises (A) between about 50 and about 93 wt % based on total of (A) plus (B) of a silicone resin and (B) between about 7 and about 50 wt % based on total weight of (A) plus (B) of a polyhydroxyl component. The silicone resin (A) of the coating powder has organic substitutents selected from the group consisting of phenyl, methyl, C.sub.2 through C.sub.6 alkyl and mixtures thereof. The silicone resin has a viscosity of between about 500 and about 10,000 cps at 150.degree. C., a condensable hydroxyl content of between about 2 and about 4.5 wt %, and a glass transition temperature (T.sub.g) of about 55.degree. C. or above. The silicone resin preferably contains about 0.2% or less of organic solvents. The polyhydroxyl component (B) is a polyhydroxyl compound or blends of polyhydroxyl compounds with average hydroxyl equivalent weight of between 100 and 500, containing an average of at least three hydroxyl groups per molecule, and of number average molecular weight between 300 and 20,000. The blend of the silicone resin (A) and polyhydroxyl component (B) should have a combined glass transition temperature (T.sub.g) of at least about 50.degree. C.

    Abstract translation: 用于生产耐高温涂层的涂料粉末具有树脂体系,其包含(A)基于(A)加(B)总硅氧烷树脂的总重量为约50至约93重量%,和(B)约7至 基于(A)加(B)多羟基组分的总重量为约50重量%。 涂层粉末的有机硅树脂(A)具有选自苯基,甲基,C 2至C 6烷基及其混合物的有机取代基。 硅树脂在150℃下的粘度为约500至约10,000cps,约2至约4.5重量%的可冷凝羟基含量和约55℃或更高的玻璃化转变温度(Tg) 。 有机硅树脂优选含有约0.2%以下的有机溶剂。 多羟基组分(B)是多羟基化合物或平均羟基当量重量为100-500的多羟基化合物的共混物,每分子平均含有至少三个羟基,数均分子量在300至20,000之间。 有机硅树脂(A)和多羟基组分(B)的共混物应具有至少约50℃的组合玻璃化转变温度(Tg)

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