Claims
- 1. A method for the preparation of flexible cellular polymeric products which comprises reacting an organic polyisocyanate with an isocyanate-reactive composition, characterized in that the isocyanate-reactive composition comprises: (A) an isocyanate-reactive compound having a molecular weight of 1000 to 10,000 and a functionality of 2 to 4 which is selected from the group consisting of polyols, polyamines, imine-functional compounds, enamine-containing compounds and mixtures thereof; and (B) 1 to 60 weight percent of a cyclic urea blowing promoter having at least one isocyanate-reactive substituent, wherein the cyclic urea has the formula: ##STR4## wherein each R.sup.1 independently is a lower alkyl radical of C.sub.1 -C.sub.6, or a lower alkyl radical substituted with an isocyanate-reactive group; wherein each R independently is H, a lower alkyl radical of C.sub.1 -C.sub.6 or --(CH.sub.2).sub.m --X, wherein X is an isocyanate-reactive group which is OH or NH.sub.2, and m is 0, 1 or 2; and
- wherein n is 1 or 2 with the proviso that at least one R.sup.1 or R is or comprises an isocyanate-reactive group.
- 2. A method as in claim 1, wherein the isocyanate-reactive composition further comprises water.
- 3. A method as in claim 1, wherein the organic polyisocyanate is reacted with the isocyanate-reactive composition in the presence of an inert volatile blowing agent selected from the group consisting of chlorofluorocarbons, perfluorocarbons, hydrofluorocarbons, hydrochlorofluorocarbons, fluorine-containing ethers, fluorine-containing amines, hydrocarbons and dialkyl ethers.
- 4. A method as in claim 2, wherein the isocyanate-reactive composition comprises water in an amount of 0.05 to 5.0 parts by weight.
- 5. A method for the preparation of rigid cellular polymeric products which comprises reacting an organic polyisocyanate with an isocyanate-reactive composition, characterized in that the isocyanate-reactive composition comprises: (A) an isocyanate-reactive compound having a molecular weight less than 1000 and a functionality of 2 to 8 which is selected from the group consisting of polyols, polyamines, hydroxyamino compounds, imine-functional compounds, enamine-containing compounds and mixtures and mixtures thereof; and (B) 1 to 60 weight percent of a cyclic urea blowing promoter having at least one isocyanate-reactive substituent wherein the cyclic urea has the formula ##STR5## wherein each R.sup.1 independently is a lower alkyl radical of C.sub.1 -C.sub.6, or a lower alkyl radical substituted with an isocyanate-reactive group; wherein each R independently is H, a lower alkyl radical of C.sub.1 -C.sub.6 or --(CH.sub.2).sub.m --X, wherein X is an isocyanate-reactive group which is OH or NH.sub.2, and m is 0, 1 or 2; and wherein n is 1 or 2 with the proviso that at least one R.sup.1 or R is or comprises an isocyanate-reactive group.
- 6. A method as in claim 5, wherein the isocyanate-reactive composition further comprises water.
- 7. A method as in claim 5, wherein the organic polyisocyanate is reacted with the isocyanate-reactive composition in the presence of an inert volatile blowing agent selected from the group consisting of chlorofluorocarbons, perfluorocarbons, hydrofluorocarbons, hydrochlorofluorocarbons, fluorine-containing ethers, fluorine-containing amines, hydrocarbons, and dialkyl ethers.
- 8. A method as in claim 6, wherein the isocyanate-reactive composition comprises water in an amount of 0.05 to 5.0 parts by weight.
- 9. An isocyanate-reactive composition comprising: (A) an isocyanate-reactive compound having a molecular weight of 1000 to 10,000 and a functionality of 2 to 4 which is selected from the group consisting of polyols, polyamines, imine-functional compounds, enamine-containing compounds and mixtures thereof; and (B) 1 to 60 weight percent of a cyclic urea blowing promoter having at least one isocyanate-reactive substituent, wherein the cyclic urea has the formula ##STR6## wherein each R.sup.1 independently is a lower alkyl radical of C.sub.1 -C.sub.6, or a lower alkyl radical substituted with an isocyanate-reactive group; wherein each R independently is H, a lower alkyl radical of C.sub.1 -C.sub.6 or --(CH.sub.2).sub.m --X, wherein X is an isocyanate-reactive group which is OH or NH.sub.2, and m is 0, 1 or 2; and wherein n is 1 or 2 with the proviso that at least one R.sup.1 or R is or comprises an isocyanate-reactive group.
- 10. An isocyanate-reactive composition as in claim 9, further comprising water.
- 11. An isocyanate-reactive composition as in claim 10, where the isocyanate-reactive composition comprises water in an amount of 0.05 to 5.0 parts by weight.
- 12. An isocyanate-reactive composition comprising: (A) an isocyanate-reactive compound having a molecular weight of less than 1000 and a functionality of 2 to 8 which is selected from the group consisting of polyols, polyamines, hydroxyamino compounds, imine-functional compounds, enamine-containing compounds and mixtures thereof; and (B) 1 to 60 weight percent of a cyclic urea blowing promoter having at least one isocyanate-reactive substituent, wherein the cyclic urea has the formula ##STR7## wherein each R.sup.1 independently is a lower alkyl radical of C.sub.1 -C.sub.6, or a lower alkyl radical substituted with an isocyanate-reactive group; wherein each R independently is H, a lower alkyl radical of C.sub.1 -C.sub.6 or --(CH.sub.2).sub.m --X, wherein X is an isocyanate-reactive group which is OH or NH.sub.2, and m is 0, 1 or 2; and wherein n is 1 or 2 with the proviso that at least one R.sup.1 or R is or comprises an isocyanate-reactive group.
- 13. An isocyanate-reactive composition as in claim 12 further comprising water.
- 14. An isocyanate-reactive composition as in claim 13 wherein the isocyanate-reactive composition comprises water in an amount of 0.05 to 5.0 parts by weight.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9102362 |
Feb 1991 |
GBX |
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CROSS-REFERENCE RELATED APPLICATIONS
The present application is a continuation of application Ser. No. 07/830,810, filed Feb. 4, 1992, abandoned entitled "Polymeric Foams".
US Referenced Citations (9)
Foreign Referenced Citations (4)
Number |
Date |
Country |
834821 |
Feb 1970 |
CAX |
139212 |
Dec 1987 |
EPX |
1447850 |
Jun 1966 |
FRX |
2415150 |
Oct 1975 |
DEX |
Continuations (1)
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Number |
Date |
Country |
Parent |
830810 |
Feb 1992 |
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