Claims
- 1. A process for the preparation of a photographic support having improved edge-soiling properties which comprises:
- treating a pulp slurry with a sodium salt of a fatty acid having 12-22 carbon atoms, a water-soluble aluminum salt, and a polyamide-polyamine-epichlorohydrin resin, followed by treatment with an alkylketene dimer having an alkyl group of 8-30 carbon atoms;
- preparing a paper sheet from the pulp slurry, said paper sheet containing said water-soluble aluminum salt in the amount of 0.5-3.0% by weight, said polyamide-polyamine-epichlorohydrin resin in the amount of 0.1-2.0% by weight, said salt of a fatty acid in the amount of 0.5-3.0% by weight, and said alkylketene dimer in the amount of 0.2-2.0% by weight, wherein the ratio by weight of the salt of a fatty acid against the alkylketene dimer ranges from 1/4 to 10/1, all weights being based upon the amount of the dried pulp of the paper sheet; and
- coating the paper sheet on both sides with a polyolefin resin.
- 2. The process of claim 1 in which the sodium salt is sodium stearate.
- 3. The process of claim 1 in which the aluminum salt is sodium aluminate.
- 4. The process of claim 2 in which the aluminum salt is sodium aluminate.
- 5. The process of claim 1 in which the alkylketene dimer has 14 to 16 carbon atoms.
- 6. The process of claim 2 in which the alkylketene dimer has 14 to 16 carbon atoms.
Priority Claims (1)
Number |
Date |
Country |
Kind |
56-168136 |
Oct 1981 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 614,450, filed May 25, 1984, now abandoned, which, in turn, is a continuation of application Ser. No. 435,342, filed Oct. 19, 1982 abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3311532 |
Kulick et al. |
Mar 1967 |
|
3755069 |
Crawford et al. |
Aug 1973 |
|
4133688 |
Sack et al. |
Jan 1979 |
|
4288287 |
Miyama et al. |
Sep 1981 |
|
Continuations (2)
|
Number |
Date |
Country |
Parent |
614450 |
May 1984 |
|
Parent |
435342 |
Oct 1982 |
|