| 摘要 |
<p>PURPOSE:To provide a spherical cured article which little exhibits cohesiveness, has low frictional properties and rubber elasticity and can improve the workability of various molding materials, consisting of a polymer contg. a linear organopolysiloxane block or a compsn. contg. said polymer. CONSTITUTION:A spherical cured article of 5mm. or below in diameter consists of a polymer contg. at least 10wt% linear organopolysiloxane block of the formula (wherein R is a monovalent hydrocarbon group; n is an integer of 5 or greater) or a compsn. contg. said polymer. The spherical cured article little exhibits cohesiveness and can be easily redispersed even when somewhat agglomerated. Since the cured article is spherical and has rubber elasticity, friction is low and it can be deformed against extreme pressure so that the article is not broken. Particularly, when the particle size is small, these effects are remarkable and the article exhibits excellent solid lubricating action. Further, the article is effective in improving the flow characteristics of various molding materials contg. solid additives such as inorg. filler.</p> |
