Abstract: The invention relates to an unsaturated polyester resin composition comprising: —a (meth)acrylate compound; and, —a polyester formed from at least: —reagent a) comprising itaconic acid and/or itaconic anhydride; —reagent b) comprising maleic acid, maleic anhydride, and/or fumaric acid; —reagent c) comprising dicyclopentadiene (DCPD); and, —reagent d) comprising at least one di- or poly-functional alcohol, preferably at least one diol; wherein the combined weight of reagent a) (i.e. the combined weight of itaconic acid and/or itaconic anhydride) is at least 10 wt. %, preferably at least 20 wt. %, of the total weight of di-acids and anhydrides used in the unsaturated polyester resin composition. The invention further relates to use of said unsaturated polyester resin for structural parts and for gel-coats. The invention also provides methods for preparing said unsaturated polyester resin composition.

Abstract: This invention relates to a radically curable resin composition comprising: a) An unsaturated polyester resin and/or a methacrylate functional resin, b) Reactive diluent, c) A copper salt, copper complex, iron salt and/or iron complex, and d) An enaminone.

Abstract: A sulphur cement product comprising sulphur, filler, sand having a surface area of greater than 0.5 m2/g, and an organosilane having at least one amino functional group is disclosed. Further, a process for the preparation of such cement sulphur product is disclosed.

Abstract: This invention relates to a radically curable resin composition comprising: a) An unsaturated polyester resin and/or a methacrylate functional resin, b) Reactive diluent, c) A copper salt, copper complex, iron salt and/or iron complex, and d) An enaminone.

Abstract: 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.

Abstract: A sulphur cement pre-composition, comprising sulphur and an organosilane coupling agent of formula (I); wherein R1, R2 and R3 are independently chosen from alkoxy, acyloxy, acyloxy, alkyl, aryl and halogen, wherein R4 is alkyl, wherein n is from 1 to 8, wherein R5 is alkyl, alkenyl or aralkyl and wherein p is an integer of at least 1, and wherein the weight ratio of sulphur to organosilane coupling agent is at least 1.

Abstract: A sulphur cement product comprising sulphur, filler, sand having a surface area of greater than 0.5 m2/g, and an organosilane having at least one amino functional group is disclosed. Further, a process for the preparation of such cement sulphur product is disclosed.

Abstract: 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.

Abstract: 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.