摘要:
A process for the preparation of a sulphur cement product is disclosed. Sulphur is mixed with a coupling agent and with a particulate inorganic material at a temperature at which sulphur is molten to obtain a molten sulphur cement product, which is solidified. The coupling agent is supplied as a solid composition comprising the coupling agent and at least 10 wt %, based upon the weight of the solid composition, of carrier material selected from one or more of wax, inorganic filler and polymer. The coupling agent is chosen from the group of organosilanes and organotitanates.
摘要:
A process for the preparation of a sulphur cement product is disclosed. Sulphur is mixed with a coupling agent and with a particulate inorganic material at a temperature at which sulphur is molten to obtain a molten sulphur cement product, which is solidified. The coupling agent is supplied as a solid composition comprising the coupling agent and at least 10 wt %, based upon the weight of the solid composition, of carrier material selected from one or more of wax, inorganic filler and polymer. The coupling agent is chosen from the group of organosilanes and organotitanates.
摘要:
A process for preparing sulphur composites is disclosed. Molten sulphur is combined with filler and/or aggregate, with a compound of formula (I) wherein R1, R2 and R3 are independently chosen from alkoxy, acyloxy, aryloxy, alkyl, aryl and halogen, wherein R4 is alkylene and wherein X is a leaving group; and with a compound of formula (II): MmSn wherein M is a nitrogen-containing cation, a phosphorus-containing cation or a metal atom, m is 1 or 2 and n is from 1 to 8, or M is hydrogen, i is 2 and n is 1, The invention yet further relates to a process for preparing an organosilane coupling agent.
摘要:
A sulphur cement pre-composition, comprising sulphur, a first organosilane and a second organosilane, and a sulphur cement product comprising sulphur, a particulate inorganic material, a first organosilane and a second organosilane are disclosed. The first organosilane comprises one or more functional groups chosen from thiol, sulphide, amine or alkenyl groups. The second organosilane does not comprise any thiol, sulphide, amine or alkenyl groups. Processes for making the sulphur cement pre-composition and the sulphur cement product are also disclosed.
摘要:
A sulphur cement pre-composition, comprising sulphur, a first organosilane and a second organosilane, and a sulphur cement product comprising sulphur, a particulate inorganic material, a first organosilane and a second organosilane are disclosed. The first organosilane comprises one or more functional groups chosen from thiol, sulphide, amine or alkenyl groups. The second organosilane does not comprise any thiol, sulphide, amine or alkenyl groups. Processes for making the sulphur cement pre-composition and the sulphur cement product are also disclosed.
摘要:
The present invention provides a sulphur cement pre- composition, comprising sulphur and at least an organotitanate, which organotitanate is of the general molecular formula (1) or (2): wherein OR1, OR2 and OR5 are independently chosen from acyloxy, phosphato, pyrophosphate, sulfonato and glycoxy; and XO and X′O are independently chosen from alkoxy or neoalkoxy group or XO and X′O together form a glycoxy group. The invention further provides a process for preparing such sulphur cement pre-composition, processes for the preparation of a sulphur cement product, a sulphur cement product and the use of such sulphur cement pre-composition. The invention even further relates to the use of an organotitanate stabilizing agent.
摘要:
A sulphur cement pre-compositionr comprising sulphur and a polysiloxane is disclosed. The polysiloxane comprises a sulphur reactive functional group and/or a hydrolysable group. Sulphur cement products, wax-based pre-compositions, processes for preparing sulphur cement pre-compositions and processes for preparing sulphur cement products are also disclosed.
摘要:
A sulphur cement pre-composition, comprising sulphur and at least an organotitanate, which organotitanate is of the general molecular formula: wherein OR1, OR2 and OR3 are independently chosen from acyloxy, phosphato, pyrophosphate, sulfonato and glycoxy; and XO and X′O are independently chosen from alkoxy or neoalkoxy group or XO and X′O together form a glycoxy group. The invention further provides a process for preparing such sulphur cement pre-composition, processes for the preparation of a sulphur cement product, a sulphur cement product and the use of such sulphur cement pre-composition.
摘要:
The present invention provides a sulphur cement pre-composition, comprising sulphur and at least an organotitanate, which organotitanate is of the general molecular formula (1): wherein R1 is CnH(2n)—SaR4 or CmH(2m+1) and n is an integer in the range of from 1 to 4, m is an integer in the range of from 1 to 30 and a is an integer in the range of from 2 to 8, R4 is S, H, or CpH(2p+1) and p is an integer in the range of from 1 to 8, XO is an alkoxy or neoalkoxy group, R2 and R3 are, independently, a CnH(2n)—SaR4, alkyl, neoalkyl, acyl or aryl group. The invention further provides a process for preparing such sulphur cement pre-composition, processes for the preparation of a sulphur cement product, a sulphur cement product and the use of such sulphur cement pre-composition. The invention even further relates to the use of an organotitanate stabilizing agent.
摘要:
The present invention provides a sulphur cement pre-composition, comprising sulphur and at least an organotitanate, which organotitanate is of the general molecular formula (1): wherein R1 is CnH(2n)—SaR4 or CmH(2m+1) and n is an integer in the range of from 1 to 4, m is an integer in the range of from 1 to 30 and a is an integer in the range of from 2 to 8, R4 is S, H, or CpH(2p+1) and p is an integer in the range of from 1 to 8, XO is an alkoxy or neoalkoxy group, R2 and R3 are, independently, a CnH(2n)—SaR4, alkyl, neoalkyl, acyl or aryl group. The invention further provides a process for preparing such sulphur cement pre-composition, processes for the preparation of a sulphur cement product, a sulphur cement product and the use of such sulphur cement pre-composition. The invention even further relates to the use of an organotitanate stabilizing agent.