| 摘要 |
PCT No. PCT/US82/01302 Sec. 371 Date Sep. 20, 1982 Sec. 102(e) Date Sep. 20, 1982 PCT Filed Sep. 20, 1982.This invention relates to expandable urethane compositions adapted for use as sealants. The composition is characterized in comprising a first component comprising a mixture of a hydroxy functional liquid reactive elastomer and metal salts of organic sulfonates and a second component comprising polyisocyanate. Optionally, the composition may additionally comprise pigments and/or fillers. The foam sealant exhibits excellent flexibility, abrasion and impact resistance, sound deadening properties and advantageously adhesion to oily surfaces.
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