ES8500630A3 - Polyurethane-urea coatings - Google Patents
Polyurethane-urea coatingsInfo
- Publication number
- ES8500630A3 ES8500630A3 ES523885A ES523885A ES8500630A3 ES 8500630 A3 ES8500630 A3 ES 8500630A3 ES 523885 A ES523885 A ES 523885A ES 523885 A ES523885 A ES 523885A ES 8500630 A3 ES8500630 A3 ES 8500630A3
- Authority
- ES
- Spain
- Prior art keywords
- coated
- coating
- carrier
- contg
- esp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
In a process for coating substrates with polyurethaneureas, a temporary carrier is coated with a reaction mixt. comprising (a) an NCO-contg. prepolymer made by reacting (A) a polyhydroxy cpd. with a mol. wt. of 400-7000, (B) a diisocyanate and (C) a triisocyanate using an NCO/OH ratio of 1.5:1 to 3:1 and a mol. ratio (B):(C) of 80:20 to 98:2, esp. 90:10 to 97:3, and (b) an NH2 g.-contg. hardener. While the coating compsn. is still tacky, the coated carrier is laminated to the substrate to be coated and the coating is cured by heating, with evapn. of any solvent used. The carrier is then sepd. from the coated substrate. - Process is esp. useful for the prodn. of synthetic leather. The process is less critical than known processes for coating substrates with polyurethanes, and allows wider variations in temp., humidity, belt speed and hand lay up procedures. DEAB- DE3011711 C In a process for coating substrates with polyurethaneureas, a temporary carrier is coated with a reaction mixt. comprising (a) an NCO-contg. prepolymer made by reacting (A) a polyhydroxy cpd. with a mol. wt. of 400-7000, (B) a diisocyanate and (C) a triisocyanate using an NCO/OH ratio of 1.5:1 to 3:1 and a mol. ratio (B):(C) of 80:20 to 98:2, esp. 90:10 to 97:3, and (b) an NH2 g.-contg. hardener. While the coating compsn. is still tacky, the coated carrier is laminated to the substrate to be coated and the coating is cured by heating, with evapn. of any solvent used. The carrier is then sepd. from the coated substrate. - Process is esp. useful for the prodn. of synthetic leather. The process is less critical than known processes for coating substrates with polyurethanes, and allows wider variations in temp., humidity, belt speed and hand lay up procedures. (16pp)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES523885A ES523885A0 (en) | 1983-07-06 | 1983-07-06 | PROCEDURE FOR OBTAINING A REACTIVE MIXTURE, WHICH CONTAINS A PRE-PRIMER PRESENTING NCO GROUPS AND A HARDENING AGENT PRESENTING NH2 GROUPS, ESPECIALLY FOR USE IN THE SUBSTRATE COATING WITH P UREAS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES523885A ES523885A0 (en) | 1983-07-06 | 1983-07-06 | PROCEDURE FOR OBTAINING A REACTIVE MIXTURE, WHICH CONTAINS A PRE-PRIMER PRESENTING NCO GROUPS AND A HARDENING AGENT PRESENTING NH2 GROUPS, ESPECIALLY FOR USE IN THE SUBSTRATE COATING WITH P UREAS |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8500630A3 true ES8500630A3 (en) | 1984-11-01 |
ES523885A0 ES523885A0 (en) | 1984-11-01 |
Family
ID=8485972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES523885A Granted ES523885A0 (en) | 1983-07-06 | 1983-07-06 | PROCEDURE FOR OBTAINING A REACTIVE MIXTURE, WHICH CONTAINS A PRE-PRIMER PRESENTING NCO GROUPS AND A HARDENING AGENT PRESENTING NH2 GROUPS, ESPECIALLY FOR USE IN THE SUBSTRATE COATING WITH P UREAS |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES523885A0 (en) |
-
1983
- 1983-07-06 ES ES523885A patent/ES523885A0/en active Granted
Also Published As
Publication number | Publication date |
---|---|
ES523885A0 (en) | 1984-11-01 |
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