An injectable, reprocessable and recyclable polymer network comprising a) units of formula wherein R 2 is a radical selected from the group consisting of radicals of formula, and: *―Z-CO-NH-P R 1 and R 1 ' are radicals independently selected from the group consisting of: -H, (C 1 -C 20)alkyl, (C 5 -C 14)aryl, -OR 3, - R 4, -O R 5, - R 6, -NH-CO-R 7, -COORs, -S-CO-NH-R 9, -NR 10 R 11, -NO 2, -SH and halogen; P is a polymeric chain, * denotes the position through which R 2 binds to the phenyl ring of the unit of formula, X is a biradical selected from the group consisting of: -CH 2 -, -CH=CH-, -O-, -S-, -CO-, -S(O 2)-, -Si(R 12 R 13)-, and -NH-; Z is a radical selected from -S- and ―NR 17 -; R 3 to R 11 are radicals independently selected from the group consisting of: (C 1 -C 20)alkyl, and (C 5 -C 14)aryl; R 12 and R 13 are radicals independently selected from the group consisting of (C 1 -C5)alkyl, and (C 5 -C 14)aryl; R 17 is selected from the group consisting of -H, (C 1 -C 20)alkyl, and (C 5 -C 14)aryl; (C 5 -C 14)aryl represents a ring system with 1-3 rings which comprises from 5 to 14 carbon atoms, the rings being saturated, partially unsaturated, or aromatic; and being fused, partially fused or isolated; being at least one of the rings an aromatic ring; and the ring system being optionally substituted by one or more radicals independently selected from the group consisting of (C 1 -C 6)alkyl, (C 1 -C 6)haloalkyl, (C 1 -C 6)alkoxy, nitro, cyano, and halogen; "m" is an integer selected from 3 and 4; "n" is an integer selected from 1 and 2; provided that "n" + "m" is 5; "t" is an integer selected from 3 and 4; and "s" is an integer selected from 1 and 2; provided that "t" + s is 5; and b) a catalyst compound leading to the formation of a thiourethane bond, the catalyst compound being selected from a metal catalyst and a catalyst compound having a boiling temperature equal or higher than 100 °C when measured at atmospheric pressure. a) units of formula wherein R 2 is a radical selected from the group consisting of radicals of formula, and: *―Z-CO-NH-P R 1 and R 1 ' are radicals independently selected from the group consisting of: -H, (C 1 -C 20)alkyl, (C 5 -C 14)aryl, -OR 3, - R 4, -O R 5, - R 6, -NH-CO-R 7, -COORs, -S-CO-NH-R 9, -NR 10 R 11, -NO 2, -SH and halogen; P is a polymeric chain, * denotes the position through which R 2 binds to the phenyl ring of the unit of formula, X is a biradical selected from the group consisting of: -CH 2 -, -CH=CH-, -O-, -S-, -CO-, -S(O 2)-, -Si(R 12 R 13)-, and -NH-; Z is a radical selected from -S- and ―NR 17 -; R 3 to R 11 are radicals independently selected from the group consisting of: (C 1 -C 20)alkyl, and (C 5 -C 14)aryl; R 12 and R 13 are radicals independently selected from the group consisting of (C 1 -C5)alkyl, and (C 5 -C 14)aryl; R 17 is selected from the group consisting of -H, (C 1 -C 20)alkyl, and (C 5 -C 14)aryl; (C 5 -C 14)aryl represents a ring system with 1-3 rings which comprises from 5 to 14 carbon atoms, the rings being saturated, partially unsaturated, or aromatic; and being fused, partially fused or isolated; being at least one of the rings an aromatic ring; and the ring system being optionally substituted by one or more radicals independently selected from the group consisting of (C 1 -C 6)alkyl, (C 1 -C 6)haloalkyl, (C 1 -C 6)alkoxy, nitro, cyano, and halogen; "m" is an integer selected from 3 and 4; "n" is an integer selected from 1 and 2; provided that "n" + "m" is 5; "t" is an integer selected from 3 and 4; and "s" is an integer selected from 1 and 2; provided that "t" + s is 5; and R 2 is a radical selected from the group consisting of radicals of formula, and: *―Z-CO-NH-P R 1 and R 1 ' are radicals independently selected from the group consisting of: -H, (C 1 -C 20)alkyl, (C 5 -C 14)aryl, -OR 3, - R 4, -O R 5, - R 6, -NH-CO-R 7, -COORs, -S-CO-NH-R 9, -NR 10 R 11, -NO 2, -SH and halogen; P is a polymeric chain, * denotes the position through which R 2 binds to the phenyl ring of the unit of formula, X is a biradical selected from the group consisting of: -CH 2 -, -CH=CH-, -O-, -S-, -CO-, -S(O 2)-, -Si(R 12 R 13)-, and -NH-; Z is a radical selected from -S- and ―NR 17 -; R 3 to R 11 are radicals independently selected from the group consisting of: (C 1 -C 20)alkyl, and (C 5 -C 14)aryl; R 12 and R 13 are radicals independently selected from the group consisting of (C 1 -C5)alkyl, and (C 5 -C 14)aryl; R 17 is selected from the group consisting of -H, (C 1 -C 20)alkyl, and (C 5 -C 14)aryl; (C 5 -C 14)aryl represents a ring system with 1-3 rings which comprises from 5 to 14 carbon atoms, the rings being saturated, partially unsaturated, or aromatic; and being fused, partially fused or isolated; being at least one of the rings an aromatic ring; and the ring system being optionally substituted by one or more radicals independently selected from the group consisting of (C 1 -C 6)alkyl, (C 1 -C 6)haloalkyl, (C 1 -C 6)alkoxy, nitro, cyano, and halogen; "m" is an integer selected from 3 and 4; "n" is an integer selected from 1 and 2; provided that "n" + "m" is 5; "t" is an integer selected from 3 and 4; and "s" is an integer selected from 1 and 2; provided that "t" + s is 5; and b) a catalyst compound leading to the formation of a thiourethane bond, the catalyst compound being selected from a metal catalyst and a catalyst compound having a boiling temperature equal or higher than 100 °C when measured at atmospheric pressure.