Claims
- 1. A method of producing a non-woven fabric which comprises impregnating a non-woven fibrous web with a migration inhibitor of the formula: ##STR19## wherein R is alkyl (C.sub.5 -C.sub.21), alkenyl (C.sub.5 -C.sub.21) or alkyl (C.sub.5 -C.sub.21) or alkenyl (C.sub.9 -C.sub.21) substituted by hydroxy or containing an oxo group,
- R.sub.1, r.sub.2 and R.sub.3 are each, independently, hydrogen, alkyl (C.sub.1 -C.sub.3) or a radical ##STR20## wherein each of x and y are independently zero or an integer 1 to 60, the sum of each of the integers x and y in the molecular of the compound of formula I being an integer 1 to 60,
- n is an integer 2 or 3 and
- Z is zero or an integer 1 to 3, in free base, acid addition salt or quaternary ammonium salt form, and with an aqueous dispersion of a synthetic resin binder, and heating the impregnated web to cause coagulation of the binding agent and to effect drying.
- 2. A method according to claim 1, wherein R is alkyl (C.sub.5 -C.sub.21) or alkenyl (C.sub.5 -C.sub.21).
- 3. A method according to claim 1, wherein the non-woven fabric web is impregnated with a migration inhibitor of the formula: ##STR21## wherein R' is alkyl (C.sub.5 -C.sub.21) or alkenyl (C.sub.5 -C.sub.21), R.sub.1 ', R.sub.2 ' and R.sub.3 ' are each, independently a radical ##STR22## wherein x and y are as defined in claim 1, and n and Z are as defined in claim 1, in free base, acid addition salt or quatenary ammonium salt form thereof.
- 4. A method according to claim 3, wherein the non-woven fabric is impregnated with a compound of the formula: ##STR23## wherein p, q and r are integers, the sum thereof being 4.
- 5. A method according to claim 1, wherein the non-woven fabric is impregnated with a compound of the formula: ##STR24## wherein p, q and r are integers, the sum of p, q and r being 42.
- 6. A method according to claim 1, wherein the non-woven fabric is impregnated with a compound of the formula:
- C.sub.7 H.sub.15 CONH(CH.sub.2).sub.2 NH(CH.sub.2).sub.2 NH.sub.2
- 7. A method according to claim 1, wherein the non-woven fabric is impregnated with a compound of the formula: ##STR25##
- 8. A method according to claim 1, wherein the non-woven fabric is impregnated with a compound of the formula: ##STR26##
- 9. A method according to claim 1, wherein the non-woven fabric is impregnated with a compound of the formula: ##STR27## wherein p, q and r are integers, the sum of p, q and r being 52.
- 10. A method according to claim 1, wherein the non-woven fabric is impregnated with a compound of the formula:
- C.sub.9 H.sub.19 CONH(CH.sub.2).sub.3 NH(CH.sub.2).sub.3 NH.sub.2
- 11. A method according to claim 3, wherein the impregnated web is heated to a temperature between 30.degree. and 200.degree. C.
- 12. A method according to claim 3, wherein the ratio of the weight of the migration inhibitor: binding agent solid in the dispersion is from 10 to 50 : 100, respectively.
- 13. A method according to claim 3, wherein the binding agent of the binding agent aqueous dispersion is selected from homo- and copolymers of butadiene, styrene, acrylonitrile, isobutylene, vinyl halides, vinylidene chloride, acrylic esters, methacrylic esters, methylene-bis-acrylic amide, (methyl)-acrylic amide, dimethylol urea, dimethylol propylene urea, dimethylol melamine and dimethylol methyl-carbamate.
- 14. A method according to claim 3, wherein the non-woven fibrous web is selected from cotton, wood fibres, jute, sisal, wool, silk, viscose, polyamide, polyacrylonitrile, polyester and polypropylene and mixture thereof.
- 15. A method according to claim 1, wherein the synthetic resin binder dispersion contains an anionic or non-ionic dispersing agent.
- 16. A method according to claim 15 wherein the synthetic resin binder dispersion contains an anionic dispersing agent.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2812/73 |
Feb 1973 |
CH |
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Parent Case Info
This application is a continuation-in-part of our copending application Ser. No. 446,055 filed Feb. 26, 1974, and now abandoned.
US Referenced Citations (6)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
446055 |
Feb 1974 |
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