Bonded non-woven fabric and method for making it
    141.
    发明授权
    Bonded non-woven fabric and method for making it 失效
    粘合无纺布及其制造方法

    公开(公告)号:US4059665A

    公开(公告)日:1977-11-22

    申请号:US360285

    申请日:1973-05-14

    Inventor: Louis E. Kelley

    Abstract: Fibers in non-woven fibrous products are bonded together by a binder comprising a heat-cured product of a water insoluble copolymer of (i) an N-methylolamide which is N-methylolacrylamide or N-methylolmethacrylamide, and (ii) an acrylic acid ester of acrylic acid or methacrylic acid and a C.sub.1 to C.sub.8 alkanol, modified with (iii) a polyalkylene glycol of the formulaHO--(RO).sub.n --Hwherein R is an alkylene group of 2 to 6 carbon atoms and n is a number having an average value of 4 to 50. Preferred acrylic acid esters are ethyl acrylate and butyl acrylate, and the preferred polyalkylene glycol is a polyethylene glycol characterized by a molecular weight in the range of 300 to 2000. The copolymer may also contain units derived from unsaturated aliphatic carboxylic acids. Preferably the copolymer contains units derived from itaconic acid. The itaconic acid stabilizes aqueous dispersions of the copolymer and adds stiffness to the treated fibrous products without detracting from resilience and solvent resistance.

    Abstract translation: 非织造纤维制品中的纤维通过包含(i)N-羟甲基丙烯酰胺的N-羟甲基酰胺或N-羟甲基甲基丙烯酰胺的水不溶性共聚物的热固化产物的粘合剂和(ii)丙烯酸酯 丙烯酸或甲基丙烯酸和C1至C8链烷醇,其用(iii)式HO-(RO)nH的聚亚烷基二醇改性,其中R是2至6个碳原子的亚烷基,n是具有平均值的数 优选的丙烯酸酯是丙烯酸乙酯和丙烯酸丁酯,优选的聚亚烷基二醇是分子量在300至2000范围内的聚乙二醇。共聚物还可以含有衍生自不饱和脂族羧酸的单元 酸。 该共聚物优选含有衍生自衣康酸的单元。 衣康酸稳定了共聚物的水分散体,并增加了处理过的纤维制品的刚度,而不会降低回弹性和耐溶剂性。

    Polythiophene/Polyanion Compositions
    147.
    发明公开

    公开(公告)号:US20240279453A1

    公开(公告)日:2024-08-22

    申请号:US18567187

    申请日:2022-06-03

    Abstract: A polythiophene dispersion including: (a) a polythiophene copolymer of a first monomer according to Formula I and a second monomer to Formula II, wherein A represents a substituted or unsubstituted C1 to C5 alkylene bridge further functionalized with at least one functional group selected from the group consisting of a sulfonic acid or salt thereof, a phosphonic acid or salt thereof, a phosphate ester or salt thereof, a sulfate ester or salt thereof and a carboxylic acid or salt thereof; B represents a substituted or unsubstituted C1 to C5 alkylene bridge with the proviso that B is not further functionalized with a pH responsive group; and a molar ratio of the first monomer to the second monomer is from 1/4 to 4/1, (b) a polymeric polyanion wherein at least 75 mol % of the monomeric units of the polymeric polyanion are functionalized with a functional group selected from the group consisting of a sulfonic acid or salt thereof, a phosphonic acid or salt thereof, a phosphate ester or salt thereof, a sulfate ester or salt thereof and a carboxylic acid or salt thereof, characterized in that a molar ratio of the functional groups of the polyanion to the sum of the first and second monomers of the polythiophene copolymer is from 1.1 to 1.75.

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