Stabilizer Composition

1 . A stabilising composition for a polyol and/or a polyurethane, comprising:

i. a first derivatised phenolic antioxidant having a molecular weight of at least about 400 g/mol and a melting point of less than about 100° C.;

ii. a second derivatised phenolic antioxidant having lower steric hindrance than the first derivatised phenolic antioxidant, which is a solid at ambient conditions; and

iii. a secondary antioxidant comprising a phosphite and/or a thioester.

2 . The stabilising composition according to claim 1 which is absent any diphenylamine and/or alkylated diphenylamine.

3 . The stabilising composition according to claim 1 , wherein the contribution to VOC of the first derivatised phenolic antioxidant is less than about 10 ppm and/or wherein the contribution to FOG of the first derivatised phenolic antioxidant is less than about 100 ppm.

4 . The stabilising composition according to claim 1 , wherein the first derivatised phenolic antioxidant comprises one or more derivatised phenolic antioxidants of formula (I):

wherein n is 1 or 2;

wherein R 1 is a linear or branched alkyl group having from 1 to 30 carbons, optionally substituted with one or more ether groups; and

wherein R 2 and R 3 are each independently selected from straight or branched chain alkyl groups having from 1 to 5 carbon atoms.

5 . The stabilising composition according to claim 4 , wherein both R 2 and R 3 are t-butyl groups.

6 . The stabilising composition according to claim 1 , wherein the first derivatised phenolic antioxidant comprises 3,5-bis(1,1-dimethylethyl)-4-hydroxy-benzenepropanoic acid, C13-15 alkyl esters; a blend of 3,5-bis(1,1-dimethylethyl)-4-hydroxy-benzenepropanoic acid, C13-15 alkyl esters and tetrakismethylene (3,5-di-t-butyl-4-hydroxyhydrocinnamate) methane; octadecyl-3-(3′,5′-di-t-butyl-4′-hydroxyphenyl) propionate; and/or a blend of octadecyl-3-(3′,5′-di-t-butyl-4′-hydroxyphenyl) propionate and tetrakismethylene (3,5-di-t-butyl-4-hydroxyhydrocinnamate) methane.

7 . The stabilising composition according to claim 1 , wherein the first derivatised phenolic antioxidant is present in the stabilising composition in an amount of from about 30 wt. % to about 95 wt. %.

8 . The stabilising composition according to claim 1 , wherein the second derivatised phenolic antioxidant has a lower molecular weight than the first derivatised phenolic antioxidant.

9 . The stabilising composition according to claim 1 , wherein the second derivatised phenolic antioxidant has a molecular weight of lower than about 400 g/mol.

10 . The stabilising composition according to claim 1 , wherein the second derivatised phenolic antioxidant comprises:

i. a mono-hydroxybenzene; and/or

ii. a di-hydroxybenzene.

11 . The stabilising composition according to claim 1 , wherein the second derivatised phenolic antioxidant is present in the stabilising composition in an amount of from about 0.1 wt. % to about 50 wt. %.

12 . The stabilising composition according to claim 1 , wherein the phosphite comprises one or more alkyl phosphites.

13 . The stabilising composition according to claim 1 , wherein the secondary antioxidant is present in the stabilising composition in an amount of from about 0.01 wt. % to about 20 wt. %.

14 . The stabilising composition according to claim 1 which has a melting point of less than about 100° C.

15 . The stabilising composition according to claim 1 , wherein the contribution to VOC of the stabilising composition is less than about 20 ppm.

16 . The stabilising composition according to claim 1 , wherein the contribution to FOG of the stabilising composition is less than about 200 ppm.

17 . A stabilising composition for a polyol and/or a polyurethane, comprising:

a) a first derivatised phenolic antioxidant having a molecular weight of at least about 400 g/mol effective to provide a contribution to VOC of less than about 10 ppm and/or a contribution to FOG of less than about 100 ppm, and having a melting point of less than about 100° C.;

b) a second derivatised phenolic antioxidant having lower steric hindrance than the first derivatised phenolic antioxidant, which is a solid at ambient conditions; and

c) a secondary antioxidant comprising a phosphite and/or a thioester.

18 . A stabilising composition for a polyol and/or a polyurethane, comprising:

a) a first derivatised phenolic antioxidant having a contribution to VOC of less than about 10 ppm and/or a contribution to FOG of less than about 100 ppm, and having a melting point of less than about 100° C.;

b) a second derivatised phenolic antioxidant having lower steric hindrance than the first derivatised phenolic antioxidant, which is a solid at ambient conditions; and

c) a secondary antioxidant comprising a phosphite and/or a thioester.

19 . The stabilising composition according to claim 1 , which when incorporated into a polyurethane foam causes the foam to undergo, on the application of a microwave scorch test, a colour change ΔE less than that of an equivalent foam into which an equivalent amount of industry-available stabilising composition (optionally any one of industry-available stabilising composition 1, 2, 3 or 4) has been incorporated.

20 . The stabilising composition according to claim 1 , which when incorporated into a polyurethane foam exhibits a contribution to VOC and/or FOG, as measured according to standard test method VDA 278, less than the contribution exhibited by an equivalent foam into which an equivalent amount of industry-available stabilising composition (optionally any one of industry-available stabilising composition 1, 2, 3 or 4) has been incorporated.

21 . A fire retardant blend, comprising:

i. a stabilising composition according to claim 1 ; and

ii. a fire retardant.

22 . (canceled)

23 . A stabilised composition, comprising:

a polyol and/or a polyurethane; and

the stabilising composition according to claim 1 .

24 . The stabilised composition according to claim 23 , wherein the polyurethane is a polyurethane foam.

25 . (canceled)