Claims
- 1. A water-soluble precondensate selected from the group consisting of
- I. a product produced by reacting (A) with (B) in aqueous solution at an initial pH of 6 to 9,
- II. a product produced by reacting (A) with (B) and (E), and
- III. a product produced by reacting (A) with (C) and (E),
- wherein
- (A) is the product of reacting a mono- or polyfunctional primary or secondary amine with dyanamide, dicyandiamide, guanidine or biguanidine; with the proviso that up to 50 mole % of the cyanamide, dicyandiamide, guanidine or biguanide may be replaced with a dicarboxylic acid or a mono- or di-ester thereof, said product (A) containing reactive hydrogen atoms bound to nitrogen,
- (B) is an epihalohydrin or a precursor thereof,
- (C) is formaldehyde or a formaldehyde precursor, and
- (E) is an N-methylol derivative of a urea, melamine, guanamine, triazinone, urone, carbamate or acid amide.
- 2. A precondensate according to claim 1 wherein component (A) is the product of reacting cyanamide, dicyandiamide or guanidine with a polyamine of formula I
- RRN--Z--X).sub.n Z--NRR I
- in which each
- R, independently, is hydrogen or a C.sub.1-10 alkyl group unsubstituted or monosubstituted with hydroxy, C.sub.1-4 alkoxy or cyano,
- n is a number from 0 to 100
- Z, or each Z independently when n>0, is C.sub.2-4 alkylene or hydroxyalkylene and
- X, or each X independently when n>1, is --O--, --S-- or --NR-- where R is as defined above,
- provided that the amine of formula I contains at least one reactive --NH-- or --NH.sub.2 group.
- 3. A precondensate according to claim 2 wherein component (A) is the product of reacting dicyandiamide with a polyamine of formula I in which each R is hydrogen, n is 0 to 4, X is --NH-- or --NCH.sub.3 -- and Z, or each Z independently when n>0, is C.sub.2-4 alkylene.
- 4. A precondensate according to claim 1 formed by reacting components (A) and (B) in aqueous solution at an initial pH of 6 to 9.
- 5. A precondensate according to claim 4 wherein component (A) is the product of reacting cyanamide, dicyandiamide or guanidine with a polyamine of formula I
- RRN--Z--X).sub.n Z--NRR I
- in which each
- R, independently, is hydrogen or a C.sub.1-10 alkyl group unsubstituted or monosubstituted with hydroxy, C.sub.1-4 alkoxy or cyano,
- n is a number from 0 to 100
- Z, or each Z independently when n>0, is C.sub.2-4 alkylene or hydroxyalkylene and
- X, or each X independently when n>1, is --O--, --S-- or --NR-- where R is as defined above,
- provided that the amine of formula I contains at least one reactive --NH-- or --NH.sub.2 group.
- 6. A precondensate of components (A), (B) and (E), as defined in claim 1.
- 7. A precondensate of components (A), (C) and (E), defined as in claim 1.
- 8. A precondensate according to claim 6 wherein component (A) is the product of reacting cyanamide, dicyandiamide or guanidine with a polyamide of formula I
- RRN--Z--X).sub.n Z--NRR I
- in which each
- R, independently, is hydrogen or a C.sub.1-10 alkyl group unsubstituted or monosubstituted with hydroxy, C.sub.1-4 alkoxy or cyano,
- n is a number from 0 to 100
- Z, or each Z independently when n>0, is C.sub.2-4 alkylene or hydroxyalkylene and
- X, or each X independently when n>1, is --O--, --S-- or --NR-- where R is as defined above,
- provided that the amine of formula I contains at least one reactive --NH-- or --NH.sub.2 group.
- 9. A precondensate according to claim 7 wherein component (A) is the product of reacting cyanamide, dicyandiamide or guanidine with a polyamine of formula I
- RRN--Z--X).sub.n Z--NRR I
- in which each
- R, independently, is hydrogen or a C.sub.1-10 alkyl group unsubstituted or monosubstituted with hydroxy, C.sub.1-4 alkoxy or cyano,
- n is a number from 0 to 100
- Z, or each Z independently when n>0, is C.sub.2-4 alkylene or hydroxyalkylene and
- X, or each X independently when n>1, is --O--, --S-- or --NR-- where R is as defined above,
- provided that the amine of formula I contains at least one reactive --NH-- or --NH.sub.2 group.
- 10. A precondensate according to claim 5 wherein component (B) is epichlorohydrin or dichlorohydrin.
- 11. A precondensate according to claim 8 wherein component (B) is epichlorohydrin or dichlorohydrin.
- 12. A precondensate according to claim 10 wherein the mol ratio of (A):(B) is 1:0.3-2.
- 13. A precondensate according to claim 11 wherein the mol ratio of (A):(B) is 1:0.3-2.
- 14. A precondensate according to claim 8 wherein component (E) is selected from the group consisting of N,N'-dimethylol-4,5-dihydroxy-ethyleneurea, N,N'-dimethylol-4,5-dimethoxy-ethyleneurea, N,N'-dimethylol-4-methoxy-5,5-dimethyl-propyleneurea, N,N'-dimethylol carbamates and the methyl and ethyl ethers thereof.
- 15. A precondensate according to claim 11 wherein component (E) is selected from the group consisting of N,N'-dimethylol-4,5-dihydroxy-ethyleneurea, N,N'-dimethylol-4,5-dimethoxy-ethyleneurea, N,N'-dimethylol-4-methoxy-5,5-dimethyl-propyleneurea, N,N'-dimethylol carbamates and the methyl and ethyl ethers thereof.
- 16. A precondensate according to claim 13 wherein component (E) is selected from the group consisting of N,N'-dimethylol-4,5-dihydroxy-ethyleneurea, N,N'-dimethylol-4,5-dimethoxy-ethyleneurea, N,N'-dimethylol-4-methoxy-5,5-dimethyl-propyleneurea, N,N'-dimethylol carbamates and the methyl and ethyl ethers thereof.
- 17. A precondensate according to claim 16 wherein component (E) is employed in an amount of 50 to 200% by weight of (A)+(B).
- 18. A precondensate according to claim 9 wherein component (E) is selected from the group consisting of N,N'-dimethylol-4,5-dihydroxy-ethyleneurea, N,N'-dimethylol-4,5-dimethoxy-ethyleneurea, N,N'-dimethylol-4-methoxy-5,5-dimethyl-propyleneurea, N,N'-dimethylol carbamates and the methyl and ethyl ethers thereof.
- 19. A precondensate according to claim 18 wherein component (C) is formaldehyde or paraformaldehyde.
- 20. A precondensate according to claim 18 wherein the mole ratio of (A):formaldehyde is in the range 1:2 to 1:6, based on the number of moles of amine originally present and (E) is employed in an amount of 50 to 200% by weight of (A)+(C).
Parent Case Info
This is a division of application Ser. No. 376,901, filed May 10, 1982, now U.S. Pat. No. 4,439,203.
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Divisions (1)
|
Number |
Date |
Country |
Parent |
376901 |
May 1982 |
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