Borate modified phenolic resin for insulation material
View Patent ↗Phenolic resins and processes of making these phenolic resins that are useful for making binders for mineral wool insulation products are disclosed. The addition of a boron salt early in the process of making these phenolic resins leads to enhanced properties such as a reduction in the amount of tetradimers and an improvement in the stability of both the base resin and the pre-react.
1. A process of making an alkaline phenol formaldehyde resin composition comprising the steps of
a) charging a reaction vessel with formaldehyde and phenol
b) adding a boron salt to the reaction vessel containing the formaldehyde and phenol to generate a reaction mix
c) adding a catalyst to the reaction mix
d) heating the reaction vessel
e) adding a base so as to generate the alkaline phenol formaldehyde resin.
2. A process of making an alkaline phenol formaldehyde resin composition comprising the steps of
a) charging a reaction vessel with formaldehyde and phenol
b) adding a catalyst to the reaction vessel containing the formaldehyde and the phenol
c) adding a boron salt to the reaction vessel containing the formaldehyde and the phenol and the catalyst
d) heating the reaction vessel to generate the alkaline phenol formaldehyde resin.
3. An alkaline phenol formaldehyde resin composition made by
a) charging a reaction vessel with formaldehyde and phenol
b) adding a boron salt to the reaction vessel containing the formaldehyde and phenol to generate a reaction mix
c) adding a catalyst to the reaction mix
d) heating the reaction vessel
e) adding a base so as to generate the alkaline phenol formaldehyde resin.
4. An alkaline phenolic resin composition made by
a) charging a reaction vessel with formaldehyde and phenol
b) adding a catalyst to the reaction vessel containing the formaldehyde and the phenol
c) adding a boron salt to the reaction vessel containing the formaldehyde and the phenol and the catalyst
d) heating the reaction vessel to generate the alkaline phenol formaldehyde resin.
5. The process according to claim 1 , wherein the boron salt is selected from the group consisting of ammonium, lithium, potassium and sodium boron salts.
6. The alkaline phenol formaldehyde resin according to claim 3 , wherein the boron salt is selected from the group consisting of ammonium, lithium, potassium and sodium boron salts.
7. The alkaline phenol formaldehyde resin according to claim 4 , wherein the boron salt is selected from the group consisting of ammonium, lithium, potassium and sodium boron salts.
8. The process according to claim 1 , wherein the boron salt is selected from the group consisting of ammonium, lithium, potassium and sodium boron salts.
9. The process according to claim 1 , wherein the boron salt is sodium tetraborate.
10. The process according to claim 2 wherein the boron salt is sodium tetraborate.
11. The alkaline phenol formaldehyde resin according to claim 3 , wherein the boron salt is sodium tetraborate.
12. The alkaline phenol formaldehyde resin according to claim 4 , wherein the boron salt is sodium tetraborate.
13. The process according to claim 1 , wherein the catalyst is a non-ortho directing catalyst.
14. The process according to claim 2 , wherein the catalyst is a non-ortho directing catalyst.
15. The alkaline phenol formaldehyde resin according to claim 3 , wherein the catalyst is a non-ortho directing catalyst.
16. The alkaline phenol formaldehyde resin according to claim 4 , wherein the catalyst is a non-ortho directing catalyst.
17. The process according to claim 13 , wherein the non-ortho directing catalyst is an organic base.
18. The process according to claim 13 , wherein the non-ortho directing catalyst is an inorganic base.
19. The process according to claim 1 , wherein a molar ratio of formaldehyde to phenol is between about 2.0 to about 5.0.
20. The process according to claim 2 , wherein a molar ratio of formaldehyde to phenol is between about 2.0 to about 5.0.
21. The alkaline phenol formaldehyde resin according to claim 3 , wherein a molar ratio of formaldehyde to phenol is between about 2.0 to about 5.0.
22. The alkaline phenol formaldehyde resin according to claim 4 , wherein a molar ratio of formaldehyde to phenol is between about 2.0 to about 5.0.
23. The process according to claim 1 , wherein a molar ratio of boron salt to phenol is between about 0.01 to about 0.30.
24. The process according to claim 1 , wherein a molar ratio of boron salt to phenol is between about 0.01 to about 0.30.
25. The alkaline phenol formaldehyde resin according to claim 3 , wherein a molar ratio of boron salt to phenol is between about 0.01 to about 0.30.
26. The alkaline phenol formaldehyde resin according to claim 4 , wherein a molar ratio of boron salt to phenol is between about 0.01 to about 0.30.
27. The process according to claim 1 , wherein the alkaline phenol formaldehyde resin has a pH of between from about 7.0 to 11.0.
28. The process according to claim 2 , wherein the alkaline phenol formaldehyde resin has a pH of between from about 7.0 to 11.0.
29. The alkaline phenol formaldehyde resin according to claim 3 , wherein the alkaline phenol formaldehyde resin has a pH of between from about 7.0 to 11.0.
30. The alkaline phenol formaldehyde resin according to claim 4 , wherein the alkaline phenol formaldehyde resin has a pH of between from about 7.0 to 11.0.
31. The process according to claim 1 , further comprising adding urea as a formaldehyde scavenger.
32. The process according to claim 2 , further comprising adding urea as a formaldehyde scavenger.
33. The alkaline phenol formaldehyde resin according to claim 3 , further comprising adding urea as a formaldehyde scavenger.
34. The alkaline phenol formaldehyde resin according to claim 4 , further comprising adding urea as a formaldehyde scavenger.