Claims
- 1. In a process for the preparation of a cellular polymer in which the major recurring polymer unit is an isocyanurate moiety said process comprising the trimerization of an organic polyisocyanate in the presence of a minor amount of a polyol, a blowing agent, and a trimerization catalyst, the improvement which comprises preparing said cellular polymer by bringing together:
- A. an organic polyisocyanate; and
- B. from about 10 to about 120 parts by weight per equivalent of said polyisocyanate of a blend comprising:
- (a) about 2 to about 20 percent by weight of a polyisocyanate trimerization catalyst, and
- (b) about 80 to about 98 percent by weight of a mixture comprising:
- 1. about 20 to about 80 percent by weight of a fluorocarbon blowing agent, and
- 2. about 20 to about 80 percent by weight of a polyol component comprising an amine diol or mixture of amine diols selected from the formula ##STR3## wherein R is an aliphatic radical having from 8 to 18 carbon atoms, inclusive, each R.sub.1 is independently selected from the group consisting of hydrogen or methyl, x and y each independently have an average value from about 1 to about 15 inclusive; and
- provided the total hydroxyl equivalents present in said blend (B) are within a range of from about 0.05 to about 0.5 equivalent per equivalent of said polyisocyanate.
- 2. In a process for the preparation of a cellular polymer in which the major recurring polymer unit is an isocyanurate moiety said process comprising the trimerization of an organic polyisocyanate in the presence of a minor amount of a polyol, a blowing agent, and a trimerization catalyst, the improvement which comprises preparing said cellular polymer by bringing together:
- A. an organic polyisocyanate; and
- B. from about 10 to about 120 parts by weight per equivalent of said polyisocyanate of a blend comprising:
- (a) about 2 to about 20 percent by weight of a polyisocyanate trimerization catalyst, and
- (b) about 80 to about 98 percent by weight of a mixture comprising:
- 1. about 1 to about 6 percent by weight of water, and
- 2. about 94 to about 99 percent by weight of a polyol component comprising an amine diol or mixture of amine diols selected from the formula ##STR4## wherein R is an aliphatic radical having from 8 to 18 carbon atoms, inclusive, each R.sub.1 is independently selected from the group consisting of hydrogen or methyl, x and y each independently have an average value from about 1 to about 15 inclusive; and
- provided the total hydroxyl equivalents present in said blend (B) are within a range of from about 0.05 to about 0.5 equivalent per equivalent of said polyisocyanate.
- 3. In a process for the preparation of a cellular polymer in which the major recurring polymer unit is an isocyanurate moiety said process comprising the trimerization of an organic polyisocyanate in the presence of a minor amount of a polyol, a blowing agent, and a trimerization catalyst, the improvement which comprises preparing said cellular polymer by bringing together:
- A. an organic polyisocyanate; and
- B. from about 10 to about 120 parts by weight per equivalent of said polyisocyanate of a miscible blend comprising:
- (a) about 2 to about 20 percent by weight of a polyisocyanate trimerization catalyst, and
- (b) about 80 to about 98 percent by weight of a mixture comprising:
- 1. at least about 25 percent by weight of a fluorocarbon blowing agent, and
- 2. the balance being a polyol mixture comprising:
- (i) about 20 to about 85 percent by weight of an amine diol, or mixture of amine diols selected from the formula ##STR5## wherein R is an aliphatic radical having from 8 to 18 carbon atoms, inclusive, and x and y each independently have an average value from about 4 to about 15 inclusive; and
- (ii) about 15 to about 80 percent by weight of a primary hydroxyl polyol characterized by a molecular weight of from about 60 to about 1000; and
- provided the total hydroxyl equivalents present in said blend (B) are within a range of from about 0.05 to about 0.5 equivalent per equivalent of said polyisocyanate.
- 4. A process according to claim 3 wherein said polyisocyanate is a polymethylene polyphenyl polyisocyanate.
- 5. A process according to claim 3 wherein said polyol (ii) is a primary hydroxyl diol.
- 6. A process for the preparation of a cellular polymer in which the major recurring polymer unit is an isocyanurate moiety said process comprising bringing together:
- A. a polymethylene polyphenyl polyisocyanate; and
- B. from about 10 to about 120 parts by weight per equivalent of said polyisocyanate of a miscible blend comprising:
- (a) about 2 to about 20 percent by weight of a polyisocyanate trimerization catalyst, and
- (b) about 80 to about 98 percent by weight of a mixture comprising:
- 1. at least about 25 percent by weight of a fluorocarbon blowing agent, and
- 2. the balance being a polyol mixture comprising:
- (i) about 20 to about 85 percent by weight of an ethoxylated cocoamine diol mixture obtained from the reaction of about 15 moles of ethylene oxide with cocoamine, and
- (ii) about 15 to about 80 percent by weight of a primary hydroxyl diol having a molecular weight of from about 60 to about 800; and
- provided the total hydroxyl equivalents present in said blend (B) are within a range of from about 0.05 to about 0.5 equivalent per equivalent of said polyisocyanate.
- 7. A process according to claim 6 wherein the primary hydroxyl diol (ii) is diethylene glycol.
- 8. A process according to claim 6 wherein the primary hydroxyl diol (ii) is a polyoxydiethylene adipate glutarate polyester diol having a molecular weight from about 400 to about 600.
- 9. A process according to claim 6 wherein the primary hydroxyl diol (ii) comprises a mixture of from about 30 percent to about 50 percent by weight of diethylene glycol and from about 50 percent to about 70 percent by weight of a polyoxydiethylene adipate glutarate polyester diol having a molecular weight from about 400 to about 600.
- 10. A laminate panel comprising a foam core made in accordance with the process set forth in claim 3 and having the opposing faces of said core bonded to a facing material.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of pending application Ser. No. 47,019 filed June 11, 1979, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (3)
Number |
Date |
Country |
2734400 |
Feb 1978 |
DEX |
981135 |
Jan 1965 |
GBX |
1154161 |
Jun 1969 |
GBX |
Non-Patent Literature Citations (1)
Entry |
McCutcheon's Detergents & Emulsifiers, 1973, No. American Edition, Allured Publ. Co., p. 191. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
47019 |
Jun 1979 |
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