Claims
- 1. An acidic resinous solution prepared by forming the reaction product of (a) the condensation product formed by the exothermic reaction in sequence of 40-60 parts by weight of an aldehyde, 2-8 parts by weight of a polyalkylol amine and 3-7 parts by weight of a strong inorganic acid, and (b) then adding to the condensation product 15-35 parts by weight of a urea per 100 parts of condensation product, the resulting resinous solution being a stable solution having an acid pH and a good shelf life.
- 2. A solution according to claim 1 wherein the condensation product is prepared by reacting formaldehyde or a compound acting as an aldehyde, phosphoric acid and a polyalkylolamine by mixing at room temperature and then raising the pH of the resulting mixture to about 4.5 to 5.5.
- 3. A solution according to claim 1 wherein reaction of the condensation product and urea is conducted at a temperature ranging from room temperature up to about 50.degree. C.
- 4. A solution according to claim 3 wherein after the reactions are complete, sufficient water is added to the solution to form an aqueous solution having a concentration of about 20-60 weight percent.
- 5. A solution according to claim 4 wherein the condensation product is allowed to stand for 1 day to 2 weeks before reacting with the urea.
- 6. A solution according to claim 5 wherein the urea is selected from the group consisting of urea, thiourea, ethylene urea, dimethylol ethylene urea, dimethylol propylene urea, dimethylol dihydroxy ethylene urea, or mixtures thereof; the aldehyde is selected from the group consisting of formaldehyde, acetaldehyde, paraldehyde, glyoxal, or mixtures thereof; the amine is a polyolamine selected from the group consisting of triethanolamine, diethanolamine and mixtures thereof; and the inorganic acid is phosphoric acid, an ammonium salt thereof, or mixtures.
- 7. A solution according to claim 6 wherein the aldehyde is formaldehyde.
- 8. A solution according to claim 7 wherein the amine is triethanolamine and the acid is phosphoric acid.
- 9. A solution according to claim 6 wherein polyvinyl acetate is added to the solution in an amountof 4-5 weight percent. 8598
- 10. A solution according to claim 6 wherein the condensation product is prepared by mixing about 2300 parts of 37% aqueous formaldehyde, about 230 parts 85% phosphoric acid, and about 280 parts 98% triethanolamine, raising the pH of the resulting mixture to 5.5 by the addition of a buffer; thoroughly reacting the resulting mixture with 25% of the weight of the condensation product of urea, allowing the mixture to stand until reaction is completed, adding three times the total weight of water, and then adding softeners, wetting agents and 4 weight percent of polyvinyl acetate.
CROSS-REFERENCES TO RELATED APPLICATIONS
This application is a continuation-in-part of my earlier filed applications Ser. No. 324,156, filed Jan. 16, 1973 now U.S. Pat. No. 3,883,462, issued May, 1975; Ser. No. 324,157, filed Jan. 16, 1973 now abandoned; Ser. No. 324,158, filed Jan. 16, 1973 now abandoned; and Ser. No. 224,250, filed Feb. 7, 1972 now abandoned, the latter application being a continuation of Ser. No. 109,035, filed Jan. 22, 1971, now abandoned, which in turn was a continuation of application Ser. No. 763,981, filed Sept. 30, 1968, and now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
2626251 |
James et al. |
Jan 1953 |
|
2657132 |
Daniel et al. |
Oct 1953 |
|
3883462 |
Pearson |
May 1975 |
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Related Publications (3)
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Number |
Date |
Country |
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324157 |
Jan 1973 |
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324158 |
Jan 1973 |
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224250 |
Feb 1972 |
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Continuations (2)
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Number |
Date |
Country |
Parent |
109035 |
Jan 1971 |
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Parent |
763981 |
Sep 1968 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
324156 |
Jan 1973 |
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