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    • 4. 发明授权
    • Thermosetting plastic foams and methods of production thereof using adhesion additives
    • 热固塑料泡沫及其使用粘合添加剂的生产方法
    • US06866923B2
    • 2005-03-15
    • US09987693
    • 2001-11-15
    • James D. ThornsberryGregory IslasRobert H. Blanpied
    • James D. ThornsberryGregory IslasRobert H. Blanpied
    • B32B5/18B32B27/40B32B3/26B32B9/00B32B27/00
    • B32B5/18B32B27/40Y10T428/249953Y10T428/249976Y10T428/249987Y10T428/249988Y10T428/249991Y10T428/249992
    • A rigid closed cell polyisocyanate-based foams is created by reacting at least one organic polyisocyanate with compounds having at least two active hydrogen atoms in the presence of an n-pentane blowing agent. When the foam is formed into a laminated board with facers, the foam formulation includes a sufficient amount of a common blend of cleaning solvent chemicals to cause a noticeable improvement in facer adhesion. The chemicals used to improve facer adhesion are a standard blend of industrial cleaning solvents called “Di-Basic Esters” or DBE. The actual chemical compounds in one mode of this mixture are the methyl esters of about 59% glutaric acid, about 20% succinic acid, and about 21% adipic acid. The minimum rate of addition of the Di-Basic Esters”[DBE] thought to be effective may be less than about 0.5 parts per hundred parts of polyol (pphpp). The currently preferred embodiments use add-on rates within the range of about 0.5 to about 5.0 pphpp, with the currently most preferred range being from about 1.0 to about 3.0 pphpp. The blend of cleaning chemicals employed by the present invention surprisingly enhance the adhesion between the foam and the facer.
    • 通过在正戊烷发泡剂的存在下使至少一种有机聚异氰酸酯与具有至少两个活性氢原子的化合物反应来产生刚性的闭孔聚异氰酸酯基泡沫。 当泡沫形成具有平板的层压板时,泡沫配方包括足够量的清洁溶剂化学品的共同混合物,以引起表面附着力的明显改善。 用于改善表面粘附性的化学品是称为“Di-Basic Esters”或DBE的工业清洁溶剂的标准混合物。 该混合物的一种模式中的实际化合物是约59%戊二酸,约20%琥珀酸和约21%己二酸的甲基酯。 认为有效的二碱基酯“DBE”的最小添加量可能少于每百份多元醇约0.5份(pphpp)。目前优选的实施方案使用附加率在约0.5 至约5.0pphpp,目前最优选的范围为约1.0至约3.0pphpp。本发明使用的清洁化学品的共混物令人惊奇地增强了泡沫与表面之间的粘合性。