A storage-stable moisture-curing one-component fire-retardant polyurethane system, useful as adhesive, sealant or coating material, comprising at least one hydrated mineral having a water-content of less than 0.1% and being treated with a moisture-reactive compound, and at least one binder on isocya
A storage-stable moisture-curing one-component fire-retardant polyurethane system, useful as adhesive, sealant or coating material, comprising at least one hydrated mineral having a water-content of less than 0.1% and being treated with a moisture-reactive compound, and at least one binder on isocyanate basis. Such PU-systems preferably further comprise at least one phosphorus-containing compound, most preferably a phosphorus-containing plasticizer, which is preferably halogen-free. The binder on isocyanate basis has preferably an isocyanate content in the range of from 0.01 to 10% by weight referred to the total weight of the system.
대표청구항▼
1. A one component polyurethane (PU) system comprising:a) at least one polyurethane prepolymer having isocyanate and/or silane terminal groups;b) at least one hydrated mineral which has been pre-dried prior to addition to the system and has a moisture content less than 0.1% by weight;c) at least one
1. A one component polyurethane (PU) system comprising:a) at least one polyurethane prepolymer having isocyanate and/or silane terminal groups;b) at least one hydrated mineral which has been pre-dried prior to addition to the system and has a moisture content less than 0.1% by weight;c) at least one phosphorus-containing plasticizer; andd) at least one moisture-reactive compound comprising at least one water-reactive group and/or the reaction product thereof with water;wherein the molar sum of the water-reactive groups and/or the reaction products thereof with water does at most correspond to the at most 0.1% by weight of water in the hydrated mineral. 2. The PU system according to claim 1, wherein the moisture-reactive compound is selected from the group consisting of monomers having isocyanate groups, polyfunctional isocyanates, mono-isocyanates, anhydrides, silanes and titanates. 3. The PU-system according to claim 1, wherein the hydrated mineral is alumina trihydrate (ATH). 4. The PU system according to claim 2, wherein the moisture-reactive compound comprises paratoluene sulfonyl isocyanate. 5. The PU-system according to claim 1, wherein the phosphorus-containing plasticizer is halogen free. 6. The PU-system according to claim 5, wherein the phosphorus-containing plasticizer is diphenyl cresyl phosphate. 7. The PU-system according to claim 1, comprising:a) 10 to 60% by weight of said at least one hydrated mineral having a water-content of less than 0.1% by weight and treated with said at least one moisture-reactive compound,b) 10 to 50% by weight of said at least one phosphorus-containing plasticizer, andc) 10 to 40% by weight of said at least one polyurethane prepolymer. 8. The PU-system according to claim 7, comprising:a) 35 to 45% by weight of at least one of said hydrated minerals,b) 20 to 30% by weight of at least one of said phosphorus containing plasticizers,c) 20 to 30% by weight of at least one of said polyurethane prepolymer. 9. The PU-system according to claim 7, further comprising up to 10% by weight of at least one latent hardener wherein reactive groups of the hardener are present in an amount of 10-100% of the isocyanate and/or silane groups of the prepolymer. 10. The PU-system according to claim 9, comprising 1 to 3% by weight of at least one hardener. 11. The PU-system according to claim 9, wherein the reactive groups of the hardener are present in an amount of 40-90% of the isocyanate and/or silane groups of the prepolymer. 12. A PU-system according to claim 11, wherein the reactive groups of the curing agent are present in an amount of 50-60% of the isocyanate and/or silane groups. 13. The PU-system according to claim 7, wherein the polyurethane prepolymer has an isocyanate content referred to the total of the PU-system in the range of from 0.01 to 10% by weight. 14. A PU-system according to claim 13, wherein the isocyanate content is less than 1% by weight. 15. The PU-system according to claim 7, wherein the ratio of said phosphorus-containing plasticizer to said polyurethane prepolymer is about 1:1. 16. A method for producing a binder-containing one component PU-system according to claim 1, said method comprising, pre-drying at elevated temperatures the hydrated mineral to a water-content below 0.1% by weight, and adding said pre-dried mineral under water-free conditions to the prepolymer or composition comprising said prepolymer either together with or after, a said moisture-reactive compound comprising at least one water reactive group. 17. A method according to claim 16, wherein drying is carried out under vacuum.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (2)
Dallavia ; Jr. Anthony J. (Marietta GA) Vande Ven Susan (Marietta GA) Smith Bobby E. (Ranger GA), Mineral filler fire retardant composition and method.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.