Water dispersions of non-uniform polyurethane particles
    3.
    发明授权
    Water dispersions of non-uniform polyurethane particles 有权
    不均匀聚氨酯颗粒的水分散体

    公开(公告)号:US08242205B2

    公开(公告)日:2012-08-14

    申请号:US12546025

    申请日:2009-08-24

    摘要: A novel method of preparing an aqueous dispersion of non-uniform polyurethane particles which comprises (a) preparing at least two isocyanate-terminated polyurethane prepolymers having different hydrophilicities; (b) preparing a uniform mixture of said prepolymers, and (c) dispersing the mixed prepolymers in an aqueous medium. The resulting dispersion of the prepolymers may optionally be chain extended. This method enables the preparation of core-shell particles as well as particles of other morphologies, including “raspberry”, interpenetrating network, “salt-and-pepper”, “ice-cream cone” and particles of gradient composition. Similarly, an aqueous dispersion of two different polyurethane polymers may be obtained by first preparing at least two different isocyanate-terminated polyurethane prepolymers, preparing a uniform mixture of such prepolymers and thereafter dispersing the mixture in an aqueous medium.

    摘要翻译: 一种制备非均匀聚氨酯颗粒的水性分散体的新方法,其包括(a)制备具有不同亲水性的至少两种异氰酸酯封端的聚氨酯预聚物; (b)制备所述预聚物的均匀混合物,和(c)将混合的预聚物分散在水性介质中。 所得到的预聚物分散体可任选地进一步延伸。 这种方法能够制备核 - 壳颗粒以及其他形态的颗粒,包括“覆盆子”,互穿网络,“盐和胡椒”,“冰淇淋锥”和梯度组成颗粒。 类似地,可以通过首先制备至少两种不同的异氰酸酯封端的聚氨酯预聚物,制备这种预聚物的均匀混合物,然后将该混合物分散在水性介质中来获得两种不同聚氨酯聚合物的水分散体。

    Water dispersions of non-uniform polyurethane particles
    4.
    发明授权
    Water dispersions of non-uniform polyurethane particles 有权
    不均匀聚氨酯颗粒的水分散体

    公开(公告)号:US07582698B2

    公开(公告)日:2009-09-01

    申请号:US10733027

    申请日:2003-12-11

    摘要: A novel method of preparing an aqueous dispersion of non-uniform polyurethane particles which comprises (a) preparing at least two isocyanate-terminated polyurethane prepolymers having different hydrophilicities; (b) preparing a uniform mixture of said prepolymers; and (c) dispersing the mixed prepolymers in an aqueous medium. The resulting dispersion of the prepolymers may optionally be chain extended. This method enables the preparation of core-shell particles as well as particles of other morphologies, including “raspberry”, interpenetrating network, “salt-and-pepper”, “ice-cream cone” and particles of gradient composition. Similarly, an aqueous dispersion of two different polyurethane polymers may be obtained by first preparing at least two different isocyanate-terminated polyurethane prepolymers, preparing a uniform mixture of such prepolymers and thereafter dispersing the mixture in an aqueous medium.

    摘要翻译: 一种制备非均匀聚氨酯颗粒的水性分散体的新方法,其包括(a)制备具有不同亲水性的至少两种异氰酸酯封端的聚氨酯预聚物; (b)制备所述预聚物的均匀混合物; 和(c)将混合的预聚物分散在水性介质中。 所得到的预聚物分散体可任选地进一步延伸。 这种方法能够制备核 - 壳颗粒以及其他形态的颗粒,包括“覆盆子”,互穿网络,“盐和胡椒”,“冰淇淋锥”和梯度组成的颗粒。 类似地,可以通过首先制备至少两种不同的异氰酸酯封端的聚氨酯预聚物,制备这种预聚物的均匀混合物,然后将该混合物分散在水性介质中来获得两种不同聚氨酯聚合物的水分散体。

    Nonwoven fabric coated with carboxylated acrylate polymers, and process
for making the nonwoven fabric
    6.
    发明授权
    Nonwoven fabric coated with carboxylated acrylate polymers, and process for making the nonwoven fabric 失效
    用羧酸丙烯酸酯聚合物涂布的无纺织物,以及制造无纺织物的方法

    公开(公告)号:US4929495A

    公开(公告)日:1990-05-29

    申请号:US337516

    申请日:1989-04-13

    申请人: Vic Stanislawczyk

    发明人: Vic Stanislawczyk

    IPC分类号: D04H1/64 D06N3/04

    摘要: Fibers in non-woven fibrous goods are bonded together by a crosslinked carboxylated acrylate polymer which forms a network of coalesced latex particles bonding contiguous fibers. This network exists as a non-continuous, porous film supported upon the fibers of the non-woven goods. The particles are of polymer derived from a crosslinked carboxylate latex containing from 1-20 phr of itaconic acid (IA) and at least 70 phr of one or more copolymerizable monomers one of which is an acrylate having the structure ##STR1## wherein R.sub.1 is hydrogen or methyl;R.sub.2 represents C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.7 alkoxyalkyl, C.sub.2 -C.sub.7 alkylthioalkyl, or C.sub.2 -C.sub.7 cyanoalkyl; andat least 40 phr of said acrylate in said film is present as an alkyl acrylate in which alkyl is C.sub.4 -C.sub.8.The network can only be derived from a latex which has been formed by an emulsion polymerization process in which at least one-half of the IA is initially charged into a reactor, and the remaining ingredients of the recipe then added gradually. The unique order of addition produces a concentration of carboxyl (COOH) groups on the surface of the latex particles which is at least twice that of COOH groups on particles of a latex formed by conventionally proportioning the monomer ingredients after initiation. This distribution of COOH groups persists in the coalesced latex particles, and results in a polymer having higher tensile strength and toughness than might be expected in a polymer with such low T.sub.g in the acrylate family.

    摘要翻译: 非织造纤维制品中的纤维通过交联的羧化丙烯酸酯聚合物结合在一起,其形成结合邻接纤维的聚结胶乳颗粒的网络。 该网络作为非连续的多孔膜存在于无纺织物的纤维上。 颗粒是衍生自含有1-20phr衣康酸(IA)和至少70phr一种或多种可共聚单体的交联羧酸酯胶乳的聚合物,其中一种是具有结构式(I)的丙烯酸酯,其中 R1是氢或甲基; R2表示C1-C20烷基,C2-C7烷氧基烷基,C2-C7烷硫基烷基或C2-C7氰基烷基; 并且所述膜中至少40phr的所述丙烯酸酯以丙烯酸烷基酯的形式存在,其中烷基是C 4 -C 8。 网络只能从乳液聚合过程形成的胶乳得到,其中IA的至少一半最初装入反应器中,然后逐渐加入配方的其余成分。 独特的添加顺序在胶乳颗粒表面产生羧基(COOH)基团的浓度,其为通过在引发后常规配比单体成分而形成的胶乳颗粒上的COOH基团的至少两倍。 COOH基团的这种分布仍然存在于聚结的胶乳颗粒中,并且导致聚合物具有比在丙烯酸酯族中具有如此低的Tg的聚合物中预期的更高的拉伸强度和韧性。

    Water dispersions of non-uniform polyurethane particles
    7.
    发明申请
    Water dispersions of non-uniform polyurethane particles 有权
    不均匀聚氨酯颗粒的水分散体

    公开(公告)号:US20050004306A1

    公开(公告)日:2005-01-06

    申请号:US10733027

    申请日:2003-12-11

    摘要: A novel method of preparing an aqueous dispersion of non-uniform polyurethane particles which comprises (a) preparing at least two isocyanate-terminated polyurethane prepolymers having different hydrophilicities; (b) preparing a uniform mixture of said prepolymers; and (c) dispersing the mixed prepolymers in an aqueous medium. The resulting dispersion of the prepolymers may optionally be chain extended. This method enables the preparation of core-shell particles as well as particles of other morphologies, including “raspberry”, interpenetrating network, “salt-and-pepper”, “ice-cream cone” and particles of gradient composition. Similarly, an aqueous dispersion of two different polyurethane polymers may be obtained by first preparing at least two different isocyanate-terminated polyurethane prepolymers, preparing a uniform mixture of such prepolymers and thereafter dispersing the mixture in an aqueous medium.

    摘要翻译: 一种制备非均匀聚氨酯颗粒的水性分散体的新方法,其包括(a)制备具有不同亲水性的至少两种异氰酸酯封端的聚氨酯预聚物; (b)制备所述预聚物的均匀混合物; 和(c)将混合的预聚物分散在水性介质中。 所得到的预聚物分散体可任选地进一步延伸。 这种方法能够制备核 - 壳颗粒以及其他形态的颗粒,包括“覆盆子”,互穿网络,“盐和胡椒”,“冰淇淋锥”和梯度组成颗粒。 类似地,可以通过首先制备至少两种不同的异氰酸酯封端的聚氨酯预聚物,制备这种预聚物的均匀混合物,然后将该混合物分散在水性介质中来获得两种不同聚氨酯聚合物的水分散体。

    Multiple phase polymeric vinyl chloride systems and related core-shell particles
    8.
    发明授权
    Multiple phase polymeric vinyl chloride systems and related core-shell particles 失效
    多相聚合氯乙烯体系和相关的核 - 壳颗粒

    公开(公告)号:US06316107B1

    公开(公告)日:2001-11-13

    申请号:US09287918

    申请日:1999-04-07

    IPC分类号: B32B516

    CPC分类号: C08F259/04 Y10T428/2998

    摘要: An emulsion or suspension polymer comprising a vinyl chloride polymeric core and an acrylic ester-acrylonitrile polymeric shell is disclosed. The emulsion polymer is preferably prepared using a two-stage process. In the first stage, a vinyl chloride monomer is polymerized or copolymerized to form a first phase of a polymeric hard core having a relatively high chlorine content. In a second stage, the soft acrylic ester—acrylonitrile copolymer is made in situ in a reaction mixture comprising the first phase. The product provides both flame retardancy and low MFFT, and is useful in a variety of coating and binding applications.

    摘要翻译: 公开了一种包含氯乙烯聚合物芯和丙烯酸酯 - 丙烯腈聚合物壳的乳液或悬浮聚合物。 乳液聚合物优选使用两阶段方法制备。 在第一阶段中,将氯乙烯单体聚合或共聚以形成具有较高氯含量的聚合物硬核的第一相。 在第二阶段中,软质丙烯酸酯 - 丙烯腈共聚物在包含第一相的反应混合物中原位制备。 该产品提供阻燃性和低MFFT,并且可用于各种涂层和结合应用。

    Vinylidene chloride emulsion interpolymer composition
    9.
    发明授权
    Vinylidene chloride emulsion interpolymer composition 失效
    偏二氯乙烯乳液互聚物组合物

    公开(公告)号:US5344867A

    公开(公告)日:1994-09-06

    申请号:US76323

    申请日:1993-06-14

    CPC分类号: C08F265/04

    摘要: An aqueous emulsion interpolymer composition capable of forming stable films which have excellent protective properties, especially on metallic substrates, good chemical resistance and/or permeability to water vapor, comprising particles suspended in an aqueous solution made by interpolymerizing an acrylic latex seed particle with a vinylidene chloride polymer comprising vinylidene chloride, one or more alkyl acrylates having from 1 to 18 carbon atoms in the alkyl group and/or one or more alkyl methacrylates having 1 to 18 carbon atoms in the alkyl group, one or more aliphatic alpha-beta-unsaturated carboxylic acids, and a copolymerizable surface active agent, the proportion of vinylidene chloride being 65 to 90 parts by weight, the portion of said alkyl acrylates and/or methacrylates being from 2 to 30 parts by weights, the portion of said carboxylic acids being from 0.1 to 20 parts by weight, and the portion of said copolymerizable surface active agent being from 0.1 to 5.0 parts by weight.

    摘要翻译: 一种水性乳液互聚物组合物,其能够形成具有优异保护性能的稳定膜,特别是在金属基材上,具有良好的耐化学性和/或水蒸汽渗透性,其包含悬浮在通过将丙烯酸胶乳种子颗粒与亚乙烯基 包含偏二氯乙烯的氯化物聚合物,在烷基中具有1至18个碳原子的一种或多种丙烯酸烷基酯和/或烷基中具有1至18个碳原子的一种或多种甲基丙烯酸烷基酯,一种或多种脂族α-β-不饱和 羧酸和可共聚的表面活性剂,偏二氯乙烯的比例为65至90重量份,所述丙烯酸烷基酯和/或甲基丙烯酸酯的部分为2至30重量份,所述羧酸的部分为 0.1〜20重量份,所述可共聚表面活性剂的份数为0.1〜5.0重量份 重量。

    Film of carboxylated acrylate latex, and article made therefrom
    10.
    发明授权
    Film of carboxylated acrylate latex, and article made therefrom 失效
    羧化丙烯酸酯胶乳膜及其制成的制品

    公开(公告)号:US4879364A

    公开(公告)日:1989-11-07

    申请号:US310262

    申请日:1989-02-13

    申请人: Vic Stanislawczyk

    发明人: Vic Stanislawczyk

    IPC分类号: C08F220/12 C08J5/18

    摘要: A soft but tough self-supporting elastomeric film having a glass transition temperature (T.sub.g) in the range from about -20.degree. C. to about -60.degree. C., raw tensile strength of at least 300 psi, along with an elongation of at least 350% and less than 20% hysteresis loss, exhibits "snap", a characteristic of a natural rubber band. The novel film is derived from a crosslinked carboxylate latex containing from 1-20 phr of itaconic acid (IA) and at least 70 phr of one or more copolymerizable monomers one of which is an acrylate having the structure ##STR1## wherein R.sub.1 is hydrogen or methyl;R.sub.2 represents C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.7 alkylthioalkyl, or C.sub.2 -C.sub.7 cyanoalkyl; andat least 40 phr of said acrylate in said film is present as an alkyl acrylate in which alkyl is C.sub.4 -C.sub.8.The film can only be derived from a latex which has been formed by an emulsion polymerization process, in which at least one-half of the IA is initially charged into a reactor, and the remaining ingredients of the recipe then added gradually. This unique order of addition produces a concenration of carboxyl (COOH) groups on the surface of the latex particles which is at least twice that of COOH groups on particles of a latex formed by conventionally proportioning the monomer ingredients after initiation. This distribution of COOH groups persists in coalesced latex particles, and results in a film having higher tensile strength and toughness than might be expected in a film with such low T.sub.g in the acrylate family.

    摘要翻译: 具有玻璃化转变温度(Tg)在约-20℃至约-60℃范围内的柔软但坚韧的自支撑弹性体膜,原始拉伸强度至少为300psi,以及在 至少350%和小于20%的磁滞损耗,表现出“卡扣”,这是天然橡胶带的特征。 该新型膜衍生自含有1-20phr衣康酸(IA)和至少70phr一种或多种可共聚单体的交联羧酸酯胶乳,其中一种是具有结构式(I)的丙烯酸酯,其中R1 是氢或甲基; R2代表C1-C20烷基,C2-C7烷硫基烷基或C2-C7氰基烷基; 并且所述膜中至少40phr的所述丙烯酸酯以丙烯酸烷基酯的形式存在,其中烷基是C 4 -C 8。 该薄膜只能通过乳液聚合方法形成的胶乳衍生,其中IA的至少一半最初装入反应器中,然后逐渐加入配方的其余成分。 这种独特的加成顺序在乳胶颗粒的表面上产生羧基(COOH)基团的浓度,其是通过在引发后常规配比单体成分形成的胶乳颗粒上COOH基团的至少两倍。 COOH基团的这种分布仍然存在于聚结的胶乳颗粒中,并导致具有比在丙烯酸酯族中具有如此低的Tg的膜中预期的更高的拉伸强度和韧性的膜。