Pre-mixed polymer compositions

摘要

The invention concerns the production of a pre-mixed porous polymeric composition wherein granules of rubber are encapsulated with a first pre-polymer which is cured, a second uncured pre-polymer is then mixed with the encapsulated granules in a substantially moisture-free environment, the mixture is deposited into containers substantially impermeable to water vapor and is then stored for later use so that without further mixing it may be applied to a suitable sub-base surface and the second pre-polymer is allowed to polymerize by reaction with water.