Polythioether prepolymers and their use in curable compositions in particular in mastics
AssigneeSocomore
InventorsSébastien Genty, Germain Fauquet, Philippe Tingaut
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Abstract
A polythioether prepolymer including functional groups capable of being obtained by the reaction: of at least one compound T having a number f of thiol functional group number selected from 2, 3, 4 and 6, with at least one compound E having a number g of epoxy functional groups number selected from 2 and 3. Also, a method of preparation for this prepolymer, a composition including this prepolymer and an oligomer as well as its use as a mastic and a polythioether polymer obtained from this polythioether prepolymer with an oligomer.
Claims15
A polythioether prepolymer comprising thiol functional groups and pendent hydroxyl functional groups,
- wherein the polythioether prepolymer is obtained by the reaction:
- of at least one compound T having a number f of thiol functional groups selected from 2, 3, 4 and 6, with at least one compound E having a number g of epoxy functional groups selected from 2 and 3, and
- wherein during the reaction of at least one compound T and at least one compound E, the compounds T comprising thiol groups and the compounds E comprising the epoxy groups react according to a ratio number of thiol groups:
- number of epoxy groups from 3:1 to 4:1.
Dependencies are inferred from the claim text.