Accelerator for curing resins
View Patent ↗Accelerator solution suitable for forming a redox system with peroxides, comprising (i) a compound of a first transition metal selected from manganese and copper, (ii) a compound of a second transition metal; the weight ratio of first transition metal:second transition metal being in the range 3:1 to 200:1, (iii) a nitrogen-containing base, and (iv) a hydroxy-functional solvent, with the proviso that the accelerator solution does not contain ascorbic acid.
1. An accelerator solution suitable for forming a redox system with peroxides, comprising:
(i) a compound of a first transition metal, the first transition metal being Cu(II),
(ii) a compound of a second transition metal; the second transition metal being selected from the group consisting of Co, Ti, Fe, and Mn, the weight ratio of the first transition metal:the second transition metal being in the range of 20:1 to 200:1,
(iii) a nitrogen-containing base, and
(iv) a hydroxy-functional solvent,
with the proviso that the accelerator solution does not contain ascorbic acid.
2. The accelerator solution according to claim 1 , wherein the first transition metal is present in the solution in an amount of 50-5000 mmol/l.
3. The accelerator solution according to claim 1 , wherein the second transition metal is present in the solution in an amount of 10-1000 mmol/l.
4. The accelerator solution according to claim 1 , further comprising an alkali or alkaline earth metal compound, a phosphorous-containing compound, and/or a 1,3-diketone.
5. A pre-accelerated resin composition comprising
(i) a curable resin,
(ii) a compound of a first transition metal, the first transition metal being Cu(II),
(iii) a compound of a second transition metal; the second transition metal being selected from the group consisting of Co, Ti, Fe, and Mn, the weight ratio of the first transition metal:the second transition metal being in the range of 20:1 to 200:1,
(iv) a nitrogen-containing base, and
(v) a hydroxy-functional solvent
with the proviso that the pre-accelerated resin does not contain ascorbic acid.
6. The pre-accelerated resin composition according to claim 5 , wherein the first transition metal is present in the solution in an amount of 1-75 mmol/kg resin.
7. The pre-accelerated resin composition according to claim 5 , wherein the second transition metal is present in the solution in an amount of 0.10-10 mmol/kg resin.
8. The pre-accelerated resin composition according to claim 5 , further comprising an alkali or alkaline earth metal compound, a phosphorous-containing compound, and/or a 1,3-diketone.
9. The pre-accelerated resin composition according to claim 5 , wherein the curable resin is an unsaturated polyester resin, a vinyl ester resin, or a (meth)acrylate resin.
10. A two-component composition comprising a first component and a second component, the first component comprising the pre-accelerated resin composition according to claim 7 , the second component comprising a peroxide.
11. The two component composition according to claim 10 , wherein the peroxide is selected from the group consisting of organic hydroperoxides, ketone peroxides, peroxycarbonates, and peroxyesters.
12. The accelerator solution according to claim 1 , wherein the second transition metal is Co.
13. The pre-accelerated resin composition of claim 5 , wherein the second transition metal is Co.
14. An accelerator solution suitable for forming a redox system with peroxides, comprising
(i) a compound of a first transition metal, the first transition metal being Cu(I),
(ii) a compound of a second transition metal; the second transition metal being selected from the group consisting of Ti, Fe, and Mn, the weight ratio of the first transition metal : the second transition metal being in the range of 20:1 to 200:1,
(iii) a nitrogen-containing base, and
(iv) a hydroxy-functional solvent,
with the proviso that the accelerator solution does not contain ascorbic acid.
15. The accelerator solution according to claim 14 , wherein the first transition metal is present in the solution in an amount of 50-5000 mmol/l.
16. The accelerator solution according to claim 14 , wherein the second transition metal is present in the solution in an amount of 10-1000 mmol/l.
17. The accelerator solution according to claim 14 , further comprising an alkali or alkaline earth metal compound, a phosphorous-containing compound, and/or a 1,3-diketone.
18. A pre-accelerated resin composition comprising
(i) a curable resin,
(ii) a compound of a first transition metal, the first transition metal being Cu(I),
(iii) a compound of a second transition metal; the second transition metal being selected from the group consisting of Ti, Fe, and Mn, the weight ratio of the first transition metal: the second transition metal being in the range of 20:1 to 200:1,
(iv) a nitrogen-containing base, and
(v) a hydroxy-functional solvent, with the proviso that the accelerator solution does not contain ascorbic acid.
19. The pre-accelerated resin composition according to claim 18 , wherein the first transition metal is present in the solution in an amount of 1-75 mmol/kg resin.
20. The pre-accelerated resin composition according to claim 18 , wherein the second transition metal is present in the solution in an amount of 0.10-10 mmol/kg resin.
21. The pre-accelerated resin composition according to claim 18 , further comprising an alkali or alkaline earth metal compound, a phosphorous- containing compound, and/or a 1,3-diketone.
22. The pre-accelerated resin composition according to claim 18 , wherein the curable resin is an unsaturated polyester resin, a vinyl ester resin, or a (meth)acrylate resin.
23. A two-component composition comprising a first component and a second component, the first component comprising the pre-accelerated resin composition according to claim 18 , the second component comprising a peroxide.
24. The two component composition according to claim 23 , wherein the peroxide is selected from the group consisting of organic hydroperoxides, ketone peroxides, peroxycarbonates, and peroxyesters.