ES8500630A3 - Polyurethane-urea coatings - Google Patents

Polyurethane-urea coatings

Info

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
Application number
ES523885A
Other languages
Spanish (es)
Other versions
ES523885A0 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to ES523885A priority Critical patent/ES523885A0/en
Publication of ES8500630A3 publication Critical patent/ES8500630A3/en
Publication of ES523885A0 publication Critical patent/ES523885A0/en
Granted legal-status Critical Current

Links

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  • 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)
ES523885A 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 Granted ES523885A0 (en)

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)

Also Published As

Publication number Publication date
ES523885A0 (en) 1984-11-01

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