초록 ▼

A method for damping vibration of a substrate comprises the step of applying a liquid material onto the substrate in an ambient environment, wherein, after application to the substrate, the material cures substantially instantaneously in the ambient environment. The damping composition usable theref

A method for damping vibration of a substrate comprises the step of applying a liquid material onto the substrate in an ambient environment, wherein, after application to the substrate, the material cures substantially instantaneously in the ambient environment. The damping composition usable therefor comprises a resin component and an isocyanate component. The resin component includes a polymer(s) for imparting tensile strength, hardness and flexibility; an optional chain extender(s) for imparting tensile strength, weatherability, flexibility, adhesion to specific substrates, and hardness; and an optional filler for imparting hardness, flexibility, and specific noise, vibration and harshness blocking characteristics to the after-application, cured surface. The isocyanate component of the composition includes an isocyanate quasi-prepolymer(s) based on a uretonimine modified MDI and a high molecular weight polyether polyol having an isocyanate equivalent content of 15.8 % and a 2,4'-isomer content of less than about 15 %; and an optional plasticizer(s) for imparting flexibility.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for damping Vibration of a substrate, comprising the step of:applying a liquid material onto the substrate in an ambient environment, wherein, after application to the substrate, the material cures substantially instantaneously in the ambient environment;wherei

[ What is claimed is:] [1.]1. A method for damping Vibration of a substrate, comprising the step of:applying a liquid material onto the substrate in an ambient environment, wherein, after application to the substrate, the material cures substantially instantaneously in the ambient environment;wherein the liquid material is essentially organic and consists essentially of:a first component consisting essentially of at least one polymer present in an amount sufficient to impart a predetermined amount of tensile strength, harness and flexibility, wherein the at least one polymer is selected from the group consisting of amine-terminated polyester diols, amine-terminated polyester triols, amine-terminated polyether diols, amine-terminated polyether triols, and mixtures thereof;a second component, consisting essentially of at least one isocyanate compound, having at least one-NCO radical wherein at least one-NCO radical is reactive with the first component; andwherein the application occurs in a manner which produces a tight, well defined application pattern, the cured materia adhering to the substrate in a manner which attenuates vibration, noise and harshness transmitted through the substrate.