Claims
- 1. A polymerization initiator system comprising:
- (a) organoborane polyamine complex;
- (b) polyisocyanate reactive with the polyamine component of the complex to liberate the organoborane; and
- (c) polyol.
- 2. A polymerization initiator system according to claim 1 wherein the polyol is selected from the group consisting of polyether polyol and polyester polyol.
- 3. A polymerization initiator system according to claim 1 wherein the polyisocyanate is soluble in acrylic monomer.
- 4. A polymerization initiator system according to claim 1 wherein the number of equivalents of isocyanate functionality is equal to the sum of the number of equivalents of amine functionality plus the number of equivalents of hydroxyl functionality.
- 5. A polymerization initiator system according to claim 1 wherein the polyol is polyalkylene oxide polyol.
- 6. A polymerization initiator system according to claim 5 wherein the polyol is selected from the group consisting of polyethylene oxide polyol, polypropylene oxide polyol, polytetramethylene oxide polyol, ethylene oxide- and propylene oxide-terminated derivatives of these materials, poly-.epsilon.-caprolactone polyol, and blends of the foregoing.
- 7. A polymerization initiator system according to claim 1 wherein the polyamine has the structure ##STR14## wherein x is a whole number greater than or equal to 1, and R.sup.5 is hydrogen or an alkyl group.
- 8. A polymerization initiator system according to claim 1 wherein the polyamine is a polyoxyalkylenepolyamine having a structure selected from the group consisting of: H.sub.2 NR.sup.6 (R.sup.7 O).sub.w --(R.sup.8 O).sub.x --(R.sup.7 O).sub.y --R.sup.6 NH.sub.2 and [H.sub.2 NR.sup.6 --(R.sup.7 O).sub.w ].sub.z --R.sup.9 ; wherein R.sup.6, R.sup.7 and R.sup.8 are alkylene groups having 1 to 10 atoms and which may be the same or may be different; the value of w is .gtoreq.1; the value of x is .gtoreq.0; the value of y is .gtoreq.0; and the value of z is >2.
- 9. A polymerization initiator system according to claim 1 wherein the polyamine comprises the reaction product of diprimary amine-terminated material and one or more materials containing at least two groups reactive with primary amine.
- 10. A system capable of both initiating the polymerization of acrylic monomer and forming polyurethane/polyurea at room temperature, the system comprising:
- (a) a solution of organoborane polyamine complex and polyol, wherein the polyol is not reactive with the polyamine; and
- (b) polyisocyanate that is reactive with the polyamine to liberate the organoborane for initiating polymerization of the acrylic monomer.
- 11. A system according to claim 10 wherein the polyisocyanate is soluble in the acrylic monomer and is reactive with both the polyamine and the polyol to form the polyurethane/polyurea.
- 12. A system according to claim 11 wherein the polyol is polyalkylene oxide polyol.
- 13. A system according to claim 11 wherein the polyol is selected from the group consisting of polyethylene oxide polyol, polypropylene oxide polyol, polytetramethylene oxide polyol, ethylene oxide- and propylene oxide-terminated derivatives of these materials, poly-.epsilon.-caprolactone, and blends of the foregoing.
- 14. A system according to claim 11 wherein the organoborane has the structure: ##STR15## wherein: R.sup.1 is an alkyl group having 1 to 10 carbon atoms; and
- R.sup.2 and R.sup.3 are independently selected from alkyl groups having 1 to 10 carbon atoms and phenyl-containing groups.
- 15. A two-part system capable of initiating the polymerization of acrylic monomer, the two-part system comprising:
- (a) a first part comprising organoborane polyamine complex, and polyol; and
- (b) a second part comprising polyisocyanate reactive with the polyamine component of the complex to liberate the organoborane.
- 16. A two-part system according to claim 15 wherein the polyisocyanate is soluble in acrylic monomer and is reactive with both the polyamine and the polyol to form polyurethane/polyurea.
- 17. A two-part system according to claim 16 wherein the organoborane has the structure: ##STR16## wherein: R.sup.1, R.sup.2 and R.sup.3 are each the same alkyl group having 1 to 5 carbon atoms.
- 18. A two-part system according to claim 17 wherein the polyamine in the complex is selected from the group consisting of: alkyl polyamine; polyoxyalkylenepolyamine; and the reaction product of a diprimary amine-terminated material and a material having at least two groups reactive with primary amine, wherein the number of primary amine groups in the reaction mixture was greater than the number of groups reactive with primary amine.
- 19. A two-part system according to claim 18 wherein the polyamine in the complex has the structure ##STR17## wherein x is a whole number greater than or equal to 1, and R.sup.5 is hydrogen or an alkyl group.
- 20. A two-part system according to claim 18 wherein the polyol is selected from the group consisting of polyethylene oxide polyol, polypropylene oxide polyol, polytetramethylene oxide polyol, ethylene oxide- and propylene oxide-terminated derivatives of these materials, poly-.epsilon.-caprolactone, and blends of the foregoing.
- 21. A two-part system according to claim 20 wherein the polyisocyanate is hexamethylene diisocyanate, isophorone diisocyanate or m-tetramethylxylene diisocyanate.
- 22. A two-part system according to claim 21 wherein the number of equivalents of isocyanate functionality is equal to the sum of the number of equivalents of amine functionality plus the number of equivalents of hydroxyl functionality.
Parent Case Info
This is a division of application Ser. No. 08/514,190 filed Aug. 11, 1995, now U.S. Pat. No. 5,686,544.
US Referenced Citations (37)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2061021 |
Oct 1992 |
CAX |
Divisions (1)
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Number |
Date |
Country |
Parent |
514190 |
Aug 1995 |
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