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    Viscoelastic foams having high air flow
    83.
    发明授权
    Viscoelastic foams having high air flow 有权
    具有高气流的粘弹性泡沫

    公开(公告)号：US08791168B2

    公开(公告)日：2014-07-29

    申请号：US12441666

    申请日：2007-09-07

    申请人： David A. Babb ,  Bernard E. Obi ,  Robert E. O'Neill ,  Alvaro Pauperio-Neto

    发明人： David A. Babb ,  Bernard E. Obi ,  Robert E. O'Neill ,  Alvaro Pauperio-Neto

    IPC分类号： C08G18/28

    CPC分类号： C08G18/4891 ,  C08G18/165 ,  C08G18/1825 ,  C08G18/1833 ,  C08G18/242 ,  C08G18/409 ,  C08G18/4816 ,  C08G18/4829 ,  C08G18/4837 ,  C08G18/4883 ,  C08G18/7621 ,  C08G2101/005 ,  C08G2101/0058 ,  C08G2101/0083 ,  C08L83/00

    摘要： A viscoelastic polyurethane foam is the reaction product of at least one natural oil derived polyol and at least one aromatic compound having an average of more than one isocyanate group. A viscoelastic polyurethane foam has an air flow of at least about 0.5 l/s, wherein the foam is formed in the substantial absence of copolymer polyol and has not (yet) been mechanically reticulated and is preferably prepared using at least one natural oil derived polyol, more preferably in an amount of at least about 20 weight percent of the polyols used. A process of preparing a viscoelastic foam, comprises steps of (A) forming a reaction mixture including at least one polyol, at least one polyisocyanate, water, at least one catalyst wherein a the polyol comprises at least one natural oil derived polyol; and (B) subjecting the reaction mixture to conditions sufficient to result in the reaction mixture to expand and cure to form a viscoelastic polyurethane foam. In another embodiment, a process comprises steps of (a) forming a natural oil derived polyol composition comprising at least one natural oil derived polyol and water; (b) admixing at least one gelling catalyst and at least one blowing catalyst with the natural oil derived polyol composition to form a catalyst polyol admixture; (c) supplying an isocyanate in an amount corresponding to an isocyanate index for a pMDI of at least about 65 and at most about 95 or, when the isocyanate is a TDI or MDI or combination thereof, at least about 80 and at most about 105; and (c) admixing the isocyanate with the catalyst polyol admixture.

    摘要翻译： 粘弹性聚氨酯泡沫是至少一种天然油衍生的多元醇与至少一种具有多于一个异氰酸酯基团的芳族化合物的反应产物。 粘弹性聚氨酯泡沫具有至少约0.5l / s的空气流，其中泡沫在基本上不存在共聚物多元醇的情况下形成，并且尚未（机械地网状化），并且优选使用至少一种天然油衍生的多元醇 ，更优选地为所用多元醇的至少约20重量％的量。 一种制备粘弹性泡沫的方法，包括以下步骤：（A）形成包含至少一种多元醇，至少一种多异氰酸酯，水，至少一种催化剂的反应混合物，其中多元醇包含至少一种天然油衍生的多元醇; 和（B）使反应混合物达到足以使反应混合物膨胀和固化以形成粘弹性聚氨酯泡沫的条件。 在另一个实施方案中，方法包括以下步骤：（a）形成天然油衍生的多元醇组合物，其包含至少一种天然油衍生的多元醇和水; （b）将至少一种胶凝催化剂和至少一种发泡催化剂与天然油衍生的多元醇组合物混合以形成催化剂多元醇混合物; （c）供应对应于至少约65和至多约95的pMDI的异氰酸酯指数的异氰酸酯，或当异氰酸酯是TDI或MDI或其组合时，至少约80和至多约105 ; 和（c）将异氰酸酯与催化剂多元醇混合物混合。

    Oxidation discoloration resistant polyurethane foam
    84.
    发明授权
    Oxidation discoloration resistant polyurethane foam 有权
    氧化变色聚氨酯泡沫

    公开(公告)号：US08557946B1

    公开(公告)日：2013-10-15

    申请号：US13036654

    申请日：2011-02-28

    申请人： Scott Christopher Magness

    发明人： Scott Christopher Magness

    IPC分类号： C08G18/08 ,  C08G18/16 ,  C08G18/38 ,  C09K21/00 ,  C08J9/00

    CPC分类号： C08G18/14 ,  C08G18/08 ,  C08G18/16 ,  C08G18/38 ,  C08G18/409 ,  C08G18/48 ,  C08G18/63 ,  C08G18/7621 ,  C08G2101/00 ,  C08J9/0038 ,  C08J2205/05 ,  C08J2375/04 ,  C09K21/12

    摘要： A flexible polyurethane foam with improved resistance to discoloration from oxidation is disclosed. Such discoloration may be due to exposure to oxides of nitrogen, for example, the oxides commonly found in burnt gas fumes. The foam may be used for applications such as intimate apparel and other consumer products that need extended term color stability. The foam composition includes high levels of reactive and non-reactive phosphite esters that improve color stability without disadvantage to the foam's physical and aesthetic properties during and after production.

    摘要翻译： 公开了一种具有改善的抵抗氧化变色的柔性聚氨酯泡沫。 这种变色可能是由于暴露于氮氧化物，例如通常在燃烧气体烟气中发现的氧化物。 该泡沫可用于诸如亲密服装和其他需要延长术语颜色稳定性的消费品的应用。 泡沫组合物包括高水平的反应性和非反应性亚磷酸酯，其改善颜色稳定性，而不会在生产期间和之后泡沫的物理和美学性质的缺点。