Process for Making a Polyisocyanurate Composite

• US 20090005517A1
• Filed: 01/17/2007
• Published: 01/01/2009
• Est. Priority Date: 02/21/2006
• Status: Abandoned Application

• Current Assignee: Huntsman International LLC (Huntsman Corporation)
• Original Assignee: Huntsman International LLC (Huntsman Corporation)
• Inventors: Roekaerts, Stijn, Vandervesse, Marc, Bleys, Gerhard Jozef, Verbeke, Hans Godelieve Guido, Huygens, Eric
• Application Number:
  US12/279,903
• Publication Number:
  US 20090005517A1
• Time in Patent Office: Days
• US Class Current: 525/452
• CPC Class Codes: C08G 18/092 oligomerisation to isocyanurate groups
• CPC Class Codes: C08G 18/225 of alkali or alkaline earth metals
• CPC Class Codes: C08G 18/4833 Polyethers containing oxyethylene units
• CPC Class Codes: C08G 2115/02 to isocyanurate groups
• CPC Class Codes: C08L 2666/08 Homopolymers or copolymers according to C08L7/00 - C08L21/00; Derivatives thereof
• CPC Class Codes: C08L 2666/20 Macromolecular compounds having nitrogen in the main chain according to C08L75/00 - C08L79/00; Derivatives thereof
• CPC Class Codes: C08L 75/04 Polyurethanes

Abstract

Process for making a polyisocyanurate composite which process comprises combining a polyisocyanate, a polyether polyol and a trimerization catalyst with a to-be-bonded material to form a reactive composite, and allowing in a next step this reactive composite to react at elevated temperature, wherein the amount of the reactive binder composition is 1-60% by weight and the amount of the to-be-bonded material is 40-99% by weight, both calculated on the amount of the reactive binder composition plus the amount of the to-be-bonded material, wherein the amount of the polyisocyanate and the polyol is such that the index is 150-10000, characterized in that the polyol is a polyol having an average equivalent weight of 100-2500 and an oxyethylene content of at least 50% by weight.

The reactive composite is claimed as well together with composites obtained from this process and from these reactive composites.

Claims

1-12. -12. (canceled)

13. A reactive composite comprising:

a reactive binder composition comprising a polyisocyanate, a polyether polyol, and a trimerization catalyst, the amount of the polyisocyanate and the polyol is such that the index in the reactive binder composition is 150-10000, and the polyether polyol has an average equivalent weight of 100-2500 and an oxyethylene content of at least 50% by weight; and

a to-be-bonded material, the to-be-bonded material and the reactive binder composition in respective amounts of 40-99% and 1-60% by weight, both calculated on the amount of the to-be-bonded material and the reactive binder composition.

14. The reactive composite according to claim 13, wherein the amount of trimerization catalyst is 0.01-5% by weight calculated on the amount of the polyisocyanate and the polyol used.

15. The reactive composite according to claim 13, wherein the polyisocyanate consists of a) 70-100% by weight of diphenylmethane diisocyanate comprising at least 40% by weight of 4,4′

-diphenylmethane diisocyanate and/or a variant of said diphenylmethane diisocyanate which variant has an NCO value of at least 20% by weight, and b) 30-0% by weight of another polyisocyanate.

16. The reactive composite according to claim 13, wherein the oxyethylene content is at least 65% by weight.

17. The reactive composite according to claim 13, wherein the polyether polyol has a primary hydroxyl group content of at least 40%.

18. The reactive composite according to claim 13, wherein the composite is kept at a temperature of −

50°

C. to 10°

C.

19. The reactive composite according to claim 13, wherein the composite is kept at a temperature of −

30°

C. to 0°

C.

20. The reactive composite according to claim 13, wherein the amount of the reactive binder composition is 1-40% by weight and the amount of the to-be-bonded material is 60-99% by weight, both calculated on the amount of the reactive binder composition plus the amount of the to-be-bonded material.

22. A composite made from the reactive composite according to claim 13.

23. A process for making a polyisocyanurate composite comprising:

combining, at an initial temperature, a reactive binder composition with a to-be-bonded material to form a reactive composite, said reactive binder composition including a polyisocyanate, a polyether polyol, and a trimerization catalyst;

the polyether polyol having an average equivalent weight of 100-2500 and an oxyethylene content of at least 50% by weight, the amount of the polyisocyanate and the polyether polyol is such that the index of the reactive binder composition is 150-10000, the amount of the reactive binder composition is 1-60% by weight and the amount of the to-be-bonded material is 40-99% by weight, both calculated on the amount of the reactive binder composition and the amount of the to-be-bonded material; and

allowing the reactive composite to react at an elevated temperature that is other than the initial temperature.

21. A composite made according to the process of claim 23.

24. The process according to claim 23, wherein combining the reactive binder composition with the to-be-bonded material comprises combining the polyisocyanate with the to-be-bonded material before combining the polyether polyol with the to-be-bonded material.

25. The process according to claim 23, wherein combining the reactive binder composition with the to-be-bonded material comprises mixing together the polyisocyanate, the polyether polyol, and the trimerization catalyst before combining the reactive binder composition with the to-be-bonded material.

26. The process according to claim 23, further including allowing the reaction of the reactive composite to take place in a mould.

27. The process according to claim 23, wherein combining, at an initial temperature, a reactive binder composition with a to-be-bonded material includes using a polyether polyol having an oxyethylene content of at least 65% by weight as the polyether polyol.

28. The process according to claims 23, wherein combining, at an initial temperature, a reactive binder composition with a to-be-bonded material to form a reactive composite, includes combining the polyisocyanate, the polyether polyol, the trimerization catalyst, and the to-be-bonded material at an initial temperature in the range of 5°

C. and 40°

C.

29. The process according to claim 28, wherein allowing the reactive composite to react at elevated temperature includes allowing the reactive composite to react at an elevated temperature in the range of 50°

C. to 200°

C.

30. The process according to claim 28, wherein allowing the reactive composite to react at elevated temperature includes allowing the reactive composite to react at an elevated temperature in the range of 80°

C. to 150°

C.

31. The process according to claim 23, wherein combining, at an initial temperature, a reactive binder composition with a to-be-bonded material, includes combining a trimerization catalyst in the amount of 0.01-5% by weight calculated on the amount of the polyisocyanate and the polyol used.

32. The process according to claim 31, wherein combining, at an initial temperature, a reactive binder composition with a to-be-bonded material, includes combining a polyisocyanate consisting of a) 70-100% by weight of diphenylmethane diisocyanate comprising at least 40% by weight of 4,4′

-diphenylmethane diisocyanate and/or a variant of said diphenylmethane diisocyanate said variant having an NCO value of at least 20% by weight, and b) 30-0% by weight of another polyisocyanate.

33. The process according to claim 23, wherein combining, at an initial temperature, a reactive binder composition with a to-be-bonded material, includes combining a polyether polyol having a primary hydroxyl group content of at least 40%.

34. The process according to claim 23, wherein combining, at an initial temperature, a reactive binder composition with a to-be-bonded material to form a reactive composite, includes combining the reactive binder composition in the amount of 1-40% by weight and the to-be-bonded material in the amount of 60-99% by weight, both calculated on the amount of the reactive binder composition plus the amount of the to-be-bonded material.