Method of making low compression set urethane foams
    1.
    发明授权
    Method of making low compression set urethane foams 失效
    制造低压缩聚氨酯泡沫的方法

    公开(公告)号:US4752626A

    公开(公告)日:1988-06-21

    申请号:US90008

    申请日:1987-08-27

    摘要: This invention generally relates to a high resilience urethane foam (HR foam) having low compression set at a wide range of isocyanate index for use in small void filling in integrated foam parts.The small voids formed in the molding process of integrated foam parts can be filled without penetration of foaming liquids into existing foam cells. In addition, resulting foams have very low compression set values at a wide range of isocyanate index.The foaming system of the present invention is composed of two components, i.e., thixotropic polyisocyanate component and thixotropic polyol component. Their thixotropicity is obtained by adding benzal sorbitol into respective components. The polyisocyanate is selected from organic polyisocyanates and the polyol component is prepared by mixing a polyol blend composed of a polyolefinic polyol and a polyoxyalkylene polyol in a weight ratio between 95/5 to 50/50, a blowing agent, a surfactant and a catalyst.

    摘要翻译: 本发明一般涉及在广泛的异氰酸酯指数范围内具有低压缩永久变形的高回弹性聚氨酯泡沫(HR泡沫),用于集成泡沫部件的小空隙填充。 在一体化泡沫部件的成型过程中形成的小空隙可以填充而不会将泡沫液渗透到现有的泡沫单元中。 此外,所得泡沫在异氰酸酯指数的宽范围内具有非常低的压缩永久变形值。 本发明的发泡体系由触变性多异氰酸酯成分和触变性多元醇成分两部分组成。 通过将苯甲酸山梨糖醇加入到相应的组分中来获得它们的触变性。 多异氰酸酯选自有机多异氰酸酯,多元醇组分通过以95/5至50/50的重量比混合由聚烯烃多元醇和聚氧化烯多元醇组成的多元醇共混物,发泡剂,表面活性剂和催化剂来制备。

    Reinforced foam composites comprising hydroxy-containing vinyl ester
resin
    2.
    发明授权
    Reinforced foam composites comprising hydroxy-containing vinyl ester resin 失效
    包含含羟基乙酸酯树脂的增强泡沫复合材料

    公开(公告)号:US5091436A

    公开(公告)日:1992-02-25

    申请号:US482298

    申请日:1990-02-20

    摘要: There is disclosed a polyurethane/unsaturated polyester hybrid foam of the rigid type prepared from novel components including not only polyol and polyisocyanate but also a unique hydroxy-containing vinyl ester and vinyl monomer, optionally together with an additional polar vinyl monomer, all together providing the necessary components for a hybrid polyurethane-polyvinyl ester matrix, which mixture of components before foaming is capable of having suspended therein fillers and reinforcing fibers to produce a foam or reinforced foam composite having a density between about 20 and 100 pounds per cubic foot. The reinforced foam can be made into baords and the like and advantageously has continuous fiberglass strands or yarn disposed longitudinally in or adjacent the surface skin of the foam. The strands or yarn are preferably parallel and close together and are preferably flattened out in the foam-forming process so that the surfaces have a continuous fiberglass implant longitudinally and substantially so transversely. One preferred structural composite is illustrated in the drawings.

    摘要翻译: 公开了一种由新型成分制成的刚性类型的聚氨酯/不饱和聚酯混合泡沫体,其不仅包括多元醇和多异氰酸酯,而且还包括独特的含羟基的乙烯基酯和乙烯基单体,任选与另外的极性乙烯基单体一起提供 用于混合聚氨酯 - 聚乙烯酯基质的必需组分,其中发泡前组分的混合物能够悬浮在填料和增强纤维中以产生密度在约20和100磅/立方英尺之间的泡沫或增强泡沫复合材料。 增强的泡沫可以制成保持器等,并且有利地具有连续的玻璃纤维束或纱线,其纵向放置在泡沫的表面皮肤中或附近。 绞线或纱线优选平行并靠近在一起,并且优选在泡沫形成过程中被平坦化,使得表面具有纵向和基本上如此横向的连续玻璃纤维植入物。 在附图中示出了一种优选的结构复合材料。

    Reinforced foam composites
    3.
    发明授权
    Reinforced foam composites 失效
    增强泡沫复合材料

    公开(公告)号:US4680214A

    公开(公告)日:1987-07-14

    申请号:US838942

    申请日:1986-03-12

    摘要: There is disclosed a polyurethane foam of the rigid type having three different types of polyol components capable of having suspended therein fillers and reinforcing fibers. The foam is made into boards and the like and has continuous fiber glass strands or yarn disposed longitudinally in or adjacent the surface skin of the foam. The strands or yarn are parallel and close together and are flattened out in the foam-forming process so that the surfaces have a continuous fiber glass implant longitudinally and substantially so transversely.

    摘要翻译: 公开了一种具有三种不同类型的能够悬浮在其中的多元醇组分的刚性类型的聚氨酯泡沫和增强纤维。 泡沫制成板等,并且具有连续的玻璃纤维束或在纵向上布置在泡沫的表面表面上的纱线。 股线或纱线平行并靠近在一起,并且在泡沫形成过程中被平坦化,使得表面具有纵向和基本如此横向的连续的玻璃纤维植入物。

    Halogen-free blowing agents that include cycloaliphatic hydrocarbons and
are suitable for isocyanate-based polymeric foams
    4.
    发明授权
    Halogen-free blowing agents that include cycloaliphatic hydrocarbons and are suitable for isocyanate-based polymeric foams 失效
    无卤素的发泡剂,其包括脂环族烃并且适用于异氰酸酯基聚合物泡沫

    公开(公告)号:US5336696A

    公开(公告)日:1994-08-09

    申请号:US165362

    申请日:1993-12-10

    申请人: Kaneyoshi Ashida

    发明人: Kaneyoshi Ashida

    IPC分类号: C08J9/14 C09K3/00 C08G18/14

    摘要: A halogen-free blowing agent is used to produce isocyanate-based polymeric foams. The blowing agent is an organic liquid which is free from halogens and contains a positive binary azeotrope having a minimum boiling temperature in the range of about 15.degree. C. to about 80.degree. C. at normal atmospheric pressure. Particularly preferred is a binary azeotrope of an alicyclic hydrocarbon such as cyclopentane or cyclohexane and methyl formate.The halogen-free blowing agents contemplated herein provide the following advantages: no ozone depletion potential, no global warming potential, direct replacement in foam formulations for trichloromonofluoromethane (CFC-11), relatively higher blowing action, relatively lower foam density, relatively lower thermal conductivity, better compatibility, and relatively lower materials cost.

    摘要翻译: 使用无卤发泡剂来生产基于异氰酸酯的聚合物泡沫。 发泡剂是不含卤素的有机液体,并且含有在正常大气压下沸点温度在约15℃至约80℃范围内的正二元共沸物。 特别优选的是脂环族烃例如环戊烷或环己烷和甲酸甲酯的二元共沸物。 本文考虑的无卤发泡剂提供以下优点:没有臭氧消耗潜力,没有全球变暖潜力,用于三氯一氟甲烷(CFC-11)的泡沫制剂中的直接替代,相对较高的吹塑作用,相对较低的泡沫密度,相对较低的热导率 更好的兼容性,相对较低的材料成本。

    Process for preparing smoke-retardant polyisocyanurate foam
    7.
    发明授权
    Process for preparing smoke-retardant polyisocyanurate foam 失效
    制备阻燃聚异氰脲酸酯泡沫的方法

    公开(公告)号:US4514525A

    公开(公告)日:1985-04-30

    申请号:US665527

    申请日:1976-03-10

    摘要: In a process for preparing a smoke-retardant polyisocyanurate foam by reacting an organic polyisocyanate in the presence of a blowing agent and an isocyanate-trimerization catalyst, the improvement comprising conducting the reaction by adding 0.5 to 6 wt. % as Si to the total components of the foam of an organosilicone surfactant having a Si content of 4-22%, and selected from an organopolysiloxane-poly-oxyalkylene copolymer, polyvinylsilane having polyoxyalkylene side chain or modified products thereof wherein the mole % of the ethylene oxide units of the polyoxyalkylene moiety of the organosilicone surfactant is greater than 40 mole % based on the total number of ethylene oxide and propylene oxide units in said polyoxyalkylene moiety.

    摘要翻译: 在有机多异氰酸酯在发泡剂和异氰酸酯 - 三聚催化剂存在下反应制备阻燃聚异氰脲酸酯泡沫的方法,其改进包括通过加入0.5至6wt。 Si为Si含量为4〜22%的有机硅氧烷表面活性剂的总成分的Si,选自有机聚硅氧烷 - 聚 - 氧化烯共聚物,具有聚氧化烯侧链的聚乙烯基硅烷或其改性产物,其中摩尔% 基于所述聚氧化烯部分中的环氧乙烷和环氧丙烷单元的总数,有机硅氧烷表面活性剂的聚氧化烯部分的环氧乙烷单元大于40摩尔%。

    Process for preparing smoke-retardant polyisocyanurate foam
    8.
    发明授权
    Process for preparing smoke-retardant polyisocyanurate foam 失效
    制备阻燃聚异氰脲酸酯泡沫的方法

    公开(公告)号:US4072636A

    公开(公告)日:1978-02-07

    申请号:US663503

    申请日:1976-03-03

    IPC分类号: C08G18/02 C08J9/00 C08G18/14

    摘要: In a process for preparing a smoke-retardant polyisocyanurate foam by reacting an organic polyisocyanate in the presence of a blowing agent and an isocyanate-trimerization catalyst, an improvement is characterized in that the reaction is conducted in the presence of an organosilicate having the formula Si(OR).sub.4 or R.sub.n Si(OR').sub.4-n wherein R and R' are the same or different and represent aliphatic, alicyclic and aromatic hydrocarbon groups having 1-12 carbon atoms or substituted derivatives thereof and n is an integer of 1 to 3.

    摘要翻译: 在有机多异氰酸酯存在下,在发泡剂和异氰酸酯 - 三聚催化剂存在下,通过使有机多异氰酸酯反应来制备阻燃性聚异氰脲酸酯泡沫体的方法,其特征在于反应在具有式Si的有机硅酸盐存在下进行 (OR)4或RnSi(OR')4-n其中R和R'相同或不同,表示具有1-12个碳原子的脂族,脂环族和芳族烃基或其取代的衍生物,n是1〜 3。