Claims
- 1. A sulphonated, aromatic reaction product of
- (1) 100 parts by weight of a sulphonation product of
- (A) 10 to 90 percent by weight of an unsubstituted diphenyl ether or of a diphenyl ether which is substituted by methyl,
- (B) 90 to 10 percent by weight of an unsubstituted phenol, or of a phenol which is substituted by methyl, the sum of components (A) and (B) being 1 mol, and
- (C) 1 to 2 mols, calculated as sulphonic acid, of a sulphonating agent and
- (2) 1 to 6 parts by weight of formaldehyde or of a formaldehydeforming agent, said aromatic reaction product being produced by a process, which comprises reacting components (A), (B) and (C) simultaneously at 110.degree. to 180.degree. C. or initially reacting component (A) with component (C) at 110.degree. to 120.degree. C. and then with component (B) at 110.degree. to 180.degree. C. or initially reacting component (B) with component (C) at 110.degree. to 120.degree. C. and then with component (A) at 110.degree. to 180.degree. C. to give the sulphonation product (1), further reacting said sulphonation product (1) at a temperature from 60.degree. to 95.degree. C. with component (2) to give a reaction product, then adding an organic or inorganic base to said reaction product and finally optionally adding an organic acid to said reaction product.
- 2. A reaction product according to claim 1, which is obtained from 100 parts by weight of component (1) and 2 to 5 parts by weight of component (2).
- 3. A reaction product according to claim 1, in which component (A) consists of diphenyl ether or a ditolyl ether.
- 4. A reaction product according to claim 1, in which component (B) consists of a cresol or of phenol.
- 5. A reaction product according to claim 1, in which component (C) consists of oleum or sulphuric acid monohydrate.
- 6. A reaction product according to claim 1, in which component (2) consist of paraformaldehyde or of an aqueous solution of formaldehyde.
- 7. A process for the manufacture of a reaction product according to claim 1, in which
- (1) 100 parts by weight of a sulphonation product of
- (A) 10 to 90 percent by weight of an unsubstituted diphenyl ether or of a diphenylether which is substituted by methyl,
- (B) 90 to 10 percent by weight of an unsubstituted phenol, or of a phenol which is substituted by methyl, the sum of components (A) and (B) being 1 mol, and
- (C) 1 to 2 mole, calculated as sulphuric acid, of a sulphonating agent; components (A), (B) and (C) first being reacted with one another at temperatures from 110.degree. to 180.degree. C. to give the sulphonation product (1); are further reacted at temperatures from 60.degree. C. to 95.degree. C.
- (2) 1 to 6 parts by weight of formaldehyde or of a formaldehyde releasing agent
- and an organic or inorganic base is added to the resulting reaction product and an organic acid is then optionally added.
- 8. A process for tanning or re-tanning hides or chrome-tanned leather, in which hides or leather are treated with an aqueous solution containing a reaction product according to claim 1 and the material tanned in this way is rinsed and subsequently stuffed and dried.
- 9. The hides which have been tanned, or leather which has been re-tanned, by the process according to claim 8.
- 10. An agent for tanning hides or for re-tanning leather which contains a reaction product having the composition indicated in claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5046/76 |
Apr 1976 |
CHX |
|
Parent Case Info
This is a division of application Ser. No. 786,161, filed on Apr. 11, 1977, now U.S. Pat. No. 4,150,944.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1543571 |
Jul 1969 |
DEX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
786161 |
Apr 1977 |
|