利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

162 条记录 (耗时 0.021 秒)

    Process for the production of rigid foam comprising acrylic and/or methacrylic polymers without using fluorocarbons as a foaming agent
    5.
    发明授权
    Process for the production of rigid foam comprising acrylic and/or methacrylic polymers without using fluorocarbons as a foaming agent 失效
    用于生产包含丙烯酸和/或甲基丙烯酸聚合物的硬质泡沫的方法，而不使用碳氟化合物作为发泡剂

    公开(公告)号：US5026738A

    公开(公告)日：1991-06-25

    申请号：US466320

    申请日：1990-05-03

    申请人： Stefan Meinhard

    发明人： Stefan Meinhard

    IPC分类号： C08F4/34 ,  C08F20/06 ,  C08F20/10 ,  C08F220/04 ,  C08F220/10 ,  C08J9/10 ,  C08J9/14

    CPC分类号： C08J9/102 ,  C08J9/147 ,  C08J2333/00

    摘要： Rigid foam is produced without using fluorocarbons as a foaming agent by ing an oligomer mixture of monomer and dimers to heximers, flame retardant, nitrogen liberating catalysts, cell regulating agents, foam stabilizer and foam regulator, crosslinking agents and wetting agent, preheating the mixture, and pouring the mixture into a mold, keeping the temperature at a value from 50.degree. to 70.degree. C. and upon completed polymerization removing the product from the mold.

    摘要翻译： PCT No.PCT / EP88 / 01005 Sec。 371日期1990年5月3日 102（e）日期1990年5月3日PCT提交1988年11月4日PCT公布。 公开号WO89 / 04342 日期：1989年5月18日。通过将单体和二聚体的低聚物混合物混合到窒息剂，阻燃剂，释放氮的催化剂，细胞调节剂，泡沫稳定剂和泡沫调节剂，交联剂和润湿剂中，生产不使用碳氟化合物作为发泡剂的刚性泡沫 试剂，将混合物预热，并将混合物倒入模具中，保持温度在50℃至70℃的温度下，并在完成聚合反应后从模具中除去产物。

    Process for producing phenolic foams
    7.
    发明授权
    Process for producing phenolic foams 失效
    生产酚醛泡沫的方法

    公开(公告)号：US4720510A

    公开(公告)日：1988-01-19

    申请号：US736551

    申请日：1985-05-21

    申请人： Gerald C. Marks ,  Kenneth C. Thomas ,  Per I. Quist

    发明人： Gerald C. Marks ,  Kenneth C. Thomas ,  Per I. Quist

    IPC分类号： C08J9/00 ,  C08J9/14

    CPC分类号： C08J9/0061 ,  C08J9/147 ,  C08J2361/06 ,  C08J2471/00

    摘要： This invention relates to a process for producing phenolformaldehyde foams, also known as phenolic foams, of improved properties. The inventive feature resides in using a controlled combination of the various components in the curing reaction mixture and in controlling the temperature within the mass of the curing mixture. The process is applicable to production of block or laminated foams. Phenolic foams find increasing use in building applications where their thermal insulation and fire resistant properties are of value.

    摘要翻译： 本发明涉及具有改进性能的酚醛泡沫塑料（也称为酚醛泡沫塑料）的生产方法。 本发明的特征在于使用固化反应混合物中各种组分的受控组合以及控制固化混合物质量内的温度。 该方法适用于生产块状或层压泡沫。 酚醛泡沫在建筑应用中发现越来越多的用途，其中其绝热和耐火性能是有价值的。

    Closed cell phenolic foam
    9.
    发明授权
    Closed cell phenolic foam 失效
    闭孔酚醛泡沫

    公开(公告)号：US4576972A

    公开(公告)日：1986-03-18

    申请号：US760050

    申请日：1985-07-29

    申请人： James Lunt ,  Edwin J. MacPherson ,  Paul J. Meunier

    发明人： James Lunt ,  Edwin J. MacPherson ,  Paul J. Meunier

    IPC分类号： C08G8/24 ,  C08G14/08 ,  C08J9/14

    CPC分类号： C08J9/147 ,  C08G14/08 ,  C08G8/24 ,  C08J2361/34

    摘要： This invention relates to the manufacture of foam from phenolic resins and to the foam so produced. In order to overcome some of the limitations of the prior art closed cell phenolic foams, we have developed a method of preparing closed cell foams from modified, low cost phenol formaldehyde resoles, which exhibit high closed cell contents, low friability and low thermal conductivity. This specification provides a foam competitive with urethane foams, which have an aged thermal conductivity of about 0.16K. or less, but which will not generate fumes as toxic as those of urethane. There is, provided a method of making a phenolic foam material comprising the steps of(1) preparing a base catalyzed phenol-formaldehyde resole having a mole ratio of phenol to formaldehyde of between 1:3 and 1:4.5 and containing substantially no free phenol but including residual formaldehyde;(2) neutralizing, concentrating and acidifying said resole;(3) reacting with co-reactants consisting essentially of urea and resorcinol in an amount such that the molar ratio of combined urea and resorcinol to free formaldehyde in said resole is about 1:1, the ratio of urea to formaldehyde being selected so that in a test starting at ambient temperature a reaction temperature of 70.degree. to 75.degree. C. is reached during foaming within a period of 4 to 8 minutes, the urea being reacted first where urea and resorcinol are separately reacted with the resole;(4) (a) combining the product of step 3 with a surfactant in an amount sufficient to be effective as a cell stabilizer and(b) a blowing agent in an amount sufficient to form a foam;(5) initiating foam formation by adding to the mixture of step 4 a catalyst comprising an acidic material to reduce the pH of the mixture to below 4;(6) curing the mixture of step 5.

    摘要翻译： 本发明涉及从酚醛树脂和如此生产的泡沫制造泡沫。 为了克服现有技术的闭孔酚醛泡沫的一些限制，我们开发了一种由改性的低成本酚甲醛树脂制备闭孔泡沫的方法，其具有高闭孔含量，低脆性和低热导率。 本说明书提供与聚氨酯泡沫体竞争的泡沫体，其具有约0.16K的老化热导率。 或更少，但不会产生像聚氨酯那样有毒的烟雾。 提供了一种制备酚醛泡沫材料的方法，其包括以下步骤：（1）制备苯酚与甲醛的摩尔比在1:3至1:4.5之间的基本催化的苯酚 - 甲醛甲阶酚醛树脂，并且基本上不含游离酚 但包括残留甲醛; （2）中和，浓缩和酸化所述甲阶酚醛树脂; （3）与基本上由尿素和间苯二酚组成的共反应物反应，其量使得所述甲阶酚醛和间苯二酚与游离甲醛的摩尔比为约1:1，选择尿素与甲醛的比例使得在 在环境温度下开始的试验是在4-8分钟的发泡期间达到70〜75℃的反应温度，尿素首先反应，尿素和间苯二酚分别与甲阶酚醛反应; （4）（a）将步骤3的产物与足够有效作为细胞稳定剂的量的表面活性剂组合，和（b）足以形成泡沫的量的发泡剂; （5）通过向步骤4的混合物中加入包含酸性物质的催化剂以将混合物的pH降低至4以下来开始泡沫形成; （6）固化步骤5的混合物。