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    • 6. 发明授权
    • Nonwoven fabric coated with carboxylated acrylate polymers, and process
for making the nonwoven fabric
    • 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
    • US4929495A
    • 1990-05-29
    • US337516
    • 1989-04-13
    • Vic Stanislawczyk
    • Vic Stanislawczyk
    • D04H1/64D06N3/04
    • D06N3/042D04H1/587D04H1/64Y10T428/3188Y10T428/31891Y10T428/31906Y10T442/2762Y10T442/2779Y10T442/2861Y10T442/2902
    • 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.
    • 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。
    • 9. 发明授权
    • Vinylidene chloride emulsion interpolymer composition
    • 偏二氯乙烯乳液互聚物组合物
    • US5344867A
    • 1994-09-06
    • US76323
    • 1993-06-14
    • Tamela A. MorganGary L. JulianVic Stanislawczyk
    • Tamela A. MorganGary L. JulianVic Stanislawczyk
    • C08L27/08C08F2/16C08F265/00C08F265/04C08L33/00C08L33/04C09D127/04C09D127/08C09D151/00C09D151/06
    • C08F265/04
    • 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.
    • 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。
    • 10. 发明授权
    • Film of carboxylated acrylate latex, and article made therefrom
    • 羧化丙烯酸酯胶乳膜及其制成的制品
    • US4879364A
    • 1989-11-07
    • US310262
    • 1989-02-13
    • Vic Stanislawczyk
    • Vic Stanislawczyk
    • C08F220/12C08J5/18
    • C08J5/18C08F220/12C08J2333/06
    • 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.
    • 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。