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    • 27. 发明申请
    • PREPOLYMER SYSTEMS HAVING REDUCED MONOMERIC ISOCYANATE CONTENTS
    • 具有降低单体异氰酸酯含量的预聚物体系
    • US20100152381A1
    • 2010-06-17
    • US12334398
    • 2008-12-12
    • Thomas G. SavinoNikolay LebedinskiRajesh KumarCalvin T. Peeler
    • Thomas G. SavinoNikolay LebedinskiRajesh KumarCalvin T. Peeler
    • C08G18/10C08L75/04
    • C08G18/7664C08G18/10C08G18/282C08G18/4825C08G18/8064C08G2101/005C08G2101/0083C08G2350/00C08K5/0016
    • A prepolymer system has a monomeric isocyanate content of no greater than about 10% by weight based on 100 parts by weight of the prepolymer system. The prepolymer system comprises a diluent component and a prepolymer component different than and separate from the diluent component. The diluent component has an excess of isocyanate (NCO) functional groups, and comprises the reaction product of a monohydric isocyanate-reactive component and an excess of a first isocyanate component. The first isocyanate component comprises monomeric isocyanates reactive with the monohydric isocyanate-reactive component. The prepolymer component also has an excess of NCO functional groups, and comprises the reaction product of a polyol component and an excess of a second isocyanate component. The prepolymer system can be used to prepare foams via reaction with water. The foams have low density and have excellent adhesion and sound dampening properties for use in cavities of automobile bodies.
    • 基于100重量份的预聚物体系,预聚物体系具有不大于约10重量%的单体异氰酸酯含量。 预聚物体系包含稀释剂组分和不同于稀释剂组分的预聚物组分。 稀释剂组分具有过量的异氰酸酯(NCO)官能团,并且包含一元异氰酸酯反应性组分和过量的第一异氰酸酯组分的反应产物。 第一异氰酸酯组分包含与一元异氰酸酯反应性组分反应的单体异氰酸酯。 预聚物组分也具有过量的NCO官能团,并且包含多元醇组分和过量的第二异氰酸酯组分的反应产物。 预聚物体系可用于通过与水反应来制备泡沫。 泡沫具有低密度,并且具有优异的粘附性和阻尼性,用于汽车车身的腔体。
    • 28. 发明申请
    • Polymer Composition and Process
    • 聚合物组成和工艺
    • US20100093930A1
    • 2010-04-15
    • US12522564
    • 2008-01-11
    • Jong-Shing GuoAugustin ChenSheng JiangLeo TernorutskyKeltoum Ouzineb
    • Jong-Shing GuoAugustin ChenSheng JiangLeo TernorutskyKeltoum Ouzineb
    • C08F2/22
    • C08F283/006C08G18/8064C08G2170/40C08L2666/20C09J175/16
    • There is described a multi step mini-emulsion process for preparing a hybrid acrylic/polyurethane pressure sensitive adhesive (PSA) of very high shear strength, good peel strength and/or also high moisture vapor transmission rate, the process comprising the steps of: a) forming a first aqueous mixture comprising a hydrophilic stabilizer; b) forming separately a second oil mixture comprising: i) at least one vinyl functional polyurethane (optionally prepared from an isocyanate functional monomer; at least one monol and/or at least one α,β-ethylenically unsaturated monomer ii) optionally at least one hydrocarbon polymer (such as polystyrene); and iii) at least one α,β-ethylenically unsaturated monomer (such as (meth)acrylate or acids thereof; and/or iv) option-=ally at least one hydrophobic stabilizer; where components (ii), (iii) and/or (iv) may optionally be the same; c) mixing the aqueous and oil mixtures together to form a pre-(macro) emulsion; d) generating a stable mini-emulsion there-from optionally by applying high shear to form an aqueous continuous phase and stabilized oil droplets of average diameter from about 10 to about 1000 nm, and e) polymerizing the polymer precursor(s) within the droplets, optionally in the presence of a free radical initiator; to obtain a polymer latex.
    • 描述了一种用于制备具有非常高剪切强度,良好剥离强度和/或高水蒸汽透过速率的混合丙烯酸/聚氨酯压敏粘合剂(PSA)的多步微乳液方法,该方法包括以下步骤: )形成包含亲水稳定剂的第一含水混合物; b)单独形成第二油混合物,其包含:i)至少一种乙烯基官能聚氨酯(任选地由异氰酸酯官能单体制备;至少一种单醇和/或至少一种α,b-烯属不饱和单体ii)任选地至少 一种烃聚合物(如聚苯乙烯); 和iii)至少一种α,β-烯键式不饱和单体(例如(甲基)丙烯酸酯或其酸;和/或iv)选择性地 - 至少一种疏水稳定剂; 组分(ii),(iii)和/或(iv)可以任选地相同; c)将水和油混合物混合在一起以形成预(宏观)乳液; d)在其中产生稳定的微乳液,任选地通过施加高剪切以形成平均直径为约10至约1000nm的水性连续相和稳定的油滴,以及e)在液滴内聚合聚合物前体 任选地在存在自由基引发剂的情况下, 以获得聚合物胶乳。