Patent ID: 8535433

Claim:
A sulphur cement pre-composition, comprising sulphur and at least a polysulphide-containing organosilane in an amount of at least 0.3 wt % based on the weight of the total composition, which polysulphide-containing organosilane is of the general molecular formula: (X 3 Si) m H( 2n+1−m )C n —S a —C n′ H (2n′+1−m′) (SiX′ 3 ) m′ (1) wherein a is an integer in the range of from 2 to 8, X and X′ each are, independently, a hydrolysable group, n and n′ each are, independently, an integer in the range of from 1 to 4, and m and m′ each are, independently, an integer in the range of from 1 to (2n+1).