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    • 2. 发明公开
    • Vinyl acetate-ethylene emulsions for nonwoven goods
    • Vinylactetat - 乙烯乳液的非织造织物。
    • EP0066174A2
    • 1982-12-08
    • EP82104320.5
    • 1982-05-17
    • AIR PRODUCTS AND CHEMICALS, INC.
    • Iacoviello, John Generoso
    • C08F218/08C08F210/02D06M15/263
    • C08F218/08D04H1/587D04H1/64Y10T442/2484C08F210/02
    • This invention relates to a vinyl acetate-ethylene copolymer containing emulsion particularly adapted for the preparation of nonwoven goods. The vinyl acetate-ethylene emulsion is prepared by an improved process for producing an aqueous emulsion suitably adapted for producing non- woven goods said emulsion containing a vinyl acetate-ethylene copolymer wherein said copolymer contains from about 75-96% by weight of vinyl acetate. It is produced by forming an aqueous suspension of vinyl acetate, ethylene, and stabilizer, initiating the polymerization of the reaction mixture by the addition of catalysts, and adding from about 0.5-10% by weight of the vinyl acetate of a crosslinkable monomer. The improvement for enhancing the absorptivity of the copolymer comprises:

      pressurizing the reactor with ethylene to an initial ethylene equilibrium pressure of from about 100 to 1,000 psig;
      initiating the reaction mixture by the addition of catalyst at a temperature from about 10-35 = C and bringing the reaction mixture to a reaction temperature of from 45-85°C and operating pressure within a period of not more than 2 hours and the reaction temperature exceeds the initiation temperature by at least 20 c C;
      adding the crosslinkable monomer at a substantially uniform rate such that the major portion of monomer has been added by the time the vinyl acetate content in the emulsion has been reduced to a level of from 3-25% by weight of the emulsion; and
      continuing polymerization of the reaction mixture until the vinyl acetate content in said emulsion is reduced below about 1% by weight.
    • 6. 发明公开
    • Binder compositions for making nonwoven fabrics having good hydrophobic rewet properties
    • 用于制造具有良好的疏水性布莱特属性的非织造布的粘合剂组合物
    • EP0087803A3
    • 1987-05-13
    • EP83101983
    • 1983-03-01
    • AIR PRODUCTS AND CHEMICALS, INC.
    • Cook, Gerald RobertIacoviello, John GenerosoPinschmidt, Robert Krantz, Jr.Davidowich, George
    • D04H01/64A61L15/00
    • A61L15/48D04H1/587D04H1/64Y10T442/671
    • A binder composition for nonwoven fabrics which comprises
      (a) a fugitive base salt of a phosphate ester surfactant or a carboxylate surfactant, (b) a latex comprising a vinyl acetate-ethylene-olefinically unsaturated carboxylic acid interpolymer colloidally suspended in water, the interpolymer containing about 0.5 to 7.0 weight percent olefinically unsaturated carboxylic acid and sufficient ethylene to provide the interpolymer with a glass transition temperature of from about -30 to +20°C, and (c) a polyvalent metal complex compound comprising a polyvalent metal ion and counter ions or ligands which hinder interaction of the polyvalent metal ion with the carboxylate and phosphate groups of the surfactant and interpolymer at room temperature, but at elevated temperature permit such interaction because the counter ions or ligands are expelled or are replaced by the anionic group of the surfactant and interpolymer. Nonwoven fabrics, particularly diaper innerliners, bonded with such binder compositions possess good dry and wet tensile strengths and good low rewet properties.
    • 一种无纺布用粘合剂组合物,其包含(a)磷酸酯表面活性剂或羧酸盐表面活性剂的挥发性碱盐,(b)包含胶体悬浮在水中的乙酸乙烯酯 - 乙烯 - 不饱和羧酸互聚物的胶乳,所述共聚体含有 约0.5至7.0重量%的烯属不饱和羧酸和足够的乙烯以提供互聚物,玻璃化转变温度为约-30℃至+ 20℃,和(c)包含多价金属离子的多价金属络合物和 阻止多价金属离子与表面活性剂和互聚物的羧酸盐和磷酸基团在室温下的相互作用的抗衡离子或配体,但在升高的温度下允许这种相互作用,因为反离子或配体被排出或被阴离子基团 表面活性剂和互聚物。 与这种粘合剂组合物粘合的无纺布,特别是尿布内衬具有良好的干和湿拉伸强度和良好的低再湿性能。
    • 8. 发明公开
    • Vinyl acetate-ethylene emulsions for nonwoven goods
    • 乙烯乙酸乙烯酯乳液用于非商品
    • EP0066174A3
    • 1983-08-10
    • EP82104320
    • 1982-05-17
    • AIR PRODUCTS AND CHEMICALS, INC.
    • Iacoviello, John Generoso
    • C08F218/08D06M15/36C08F210/02
    • C08F218/08D04H1/587D04H1/64Y10T442/2484C08F210/02
    • This invention relates to a vinyl acetate-ethylene copolymer containing emulsion particularly adapted for the preparation of nonwoven goods. The vinyl acetate-ethylene emulsion is prepared by an improved process for producing an aqueous emulsion suitably adapted for producing non- woven goods said emulsion containing a vinyl acetate-ethylene copolymer wherein said copolymer contains from about 75-96% by weight of vinyl acetate. It is produced by forming an aqueous suspension of vinyl acetate, ethylene, and stabilizer, initiating the polymerization of the reaction mixture by the addition of catalysts, and adding from about 0.5-10% by weight of the vinyl acetate of a crosslinkable monomer. The improvement for enhancing the absorptivity of the copolymer comprises:
      pressurizing the reactor with ethylene to an initial ethylene equilibrium pressure of from about 100 to 1,000 psig; initiating the reaction mixture by the addition of catalyst at a temperature from about 10-35 = C and bringing the reaction mixture to a reaction temperature of from 45-85°C and operating pressure within a period of not more than 2 hours and the reaction temperature exceeds the initiation temperature by at least 20 c C; adding the crosslinkable monomer at a substantially uniform rate such that the major portion of monomer has been added by the time the vinyl acetate content in the emulsion has been reduced to a level of from 3-25% by weight of the emulsion; and continuing polymerization of the reaction mixture until the vinyl acetate content in said emulsion is reduced below about 1% by weight.