Iron-based accelerator for curing resins
AssigneeAkzo Nobel Chemicals International B.V.
InventorsAuke Gerardus Talma, Frederik Willem Karel Koers, Johannes Martinus Gerardus Maria Reijnders
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Abstract
Accelerator solution suitable for forming a redox system with peroxides, comprising (i) an iron compound selected from iron carboxylates, iron 1,3-dioxo complexes, and iron dicylcopentadienyl complexes, (ii) a compound of a second transition metal; the weight ratio of iron:second transition metal being in the range 3:1 to 200:1, with the proviso that the accelerator solution is essentially free of ascorbic acid.
Claims14
An accelerator solution suitable for forming a redox system with peroxides, comprising:
- an iron compound selected from the group consisting of iron carboxylates, iron 1,3-dioxo complexes, and iron dicylcopentadienyl complexes,
- (ii) a compound of a second transition metal;
- the weight ratio of iron:second transition metal being in the range of 3:1 to 200:1, and
- (iii) a solvent selected from the group consisting of diethyl phosphate, dibutyl phosphate, tributyl phosphate, triethyl phosphate, and dibutyl phosphite,
- wherein the second transition metal is Co or Mn, and
- with the proviso that the accelerator solution contains less than 1 wt % of ascorbic acid.
A two component composition comprising a first component and a second component, the first component comprising a pre-accelerated resin composition comprising
- (i) a curable resin,
- (ii) an iron compound selected from the group consisting of iron carboxylates, iron 1,3-dioxo complexes, and iron dicyclopentadienyl complexes,
- (iii) a compound of a second transition metal;
- the weight ratio of iron:second transition metal being in the range of 3:1 to 200:1,
- wherein the second transition metal is Co or Mn, and
- (iv) a solvent selected from the group consisting of diethyl phosphate, dibutyl phosphate, tributyl phosphate, triethyl phosphate, and dibutyl phosphite,
- with the proviso that the pre-accelerated resin contains less than 0.01 wt % of ascorbic acid, and
- the second component comprises a peroxide selected from the group consisting of organic hydroperoxides, ketone peroxides, peroxycabonates, and peroxyesters.
A pre-accelerated resin composition comprising:
- (i) a curable resin,
- (ii) an iron compound selected from the group consisting of iron carboxylates, iron 1,3-dioxo complexes, and iron dicyclopentadienyl complexes,
- (iii) a compound of a second transition metal;
- the weight ratio of iron:second transition metal being in the range of 3:1 to 200:1,
- wherein the second transition metal is Co or Mn, and
- (iv) a solvent selected from the group consisting of diethyl phosphate, dibutyl phosphate, tributyl phosphate, triethyl phosphate, and dibutyl phosphite,
- with the proviso that the pre-accelerated resin contains less than 0.01 wt % of ascorbic acid.
Dependencies are inferred from the claim text.