CS454287A1 - Fotochromne 2,4,4,6 tetrafenyl 4h pyrany a sposob ich vyroby - Google Patents

Fotochromne 2,4,4,6 tetrafenyl 4h pyrany a sposob ich vyroby

Info

Publication number
CS454287A1
CS454287A1 CS874542A CS454287A CS454287A1 CS 454287 A1 CS454287 A1 CS 454287A1 CS 874542 A CS874542 A CS 874542A CS 454287 A CS454287 A CS 454287A CS 454287 A1 CS454287 A1 CS 454287A1
Authority
CS
Czechoslovakia
Prior art keywords
fotochromne
pyrany
tetrafenyl
sposob
vyroby
Prior art date
Application number
CS874542A
Other languages
Czech (cs)
Other versions
CS261434B1 (en
Inventor
Antonin Doc Ing Csc Kurfuerst
Jan Ing Zeleny
Marian Ing Schwarz
Josef Prof Ing Drsc Kuthan
Original Assignee
Antonin Doc Ing Csc Kurfuerst
Zeleny Jan
Schwarz Marian
Kuthan Josef
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 Antonin Doc Ing Csc Kurfuerst, Zeleny Jan, Schwarz Marian, Kuthan Josef filed Critical Antonin Doc Ing Csc Kurfuerst
Priority to CS874542A priority Critical patent/CS261434B1/en
Publication of CS454287A1 publication Critical patent/CS454287A1/en
Publication of CS261434B1 publication Critical patent/CS261434B1/en

Links

CS874542A 1987-06-19 1987-06-19 Photochrome 2,4,4,6-tetraphenyl-4h-pyrans and method of their production CS261434B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS874542A CS261434B1 (en) 1987-06-19 1987-06-19 Photochrome 2,4,4,6-tetraphenyl-4h-pyrans and method of their production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS874542A CS261434B1 (en) 1987-06-19 1987-06-19 Photochrome 2,4,4,6-tetraphenyl-4h-pyrans and method of their production

Publications (2)

Publication Number Publication Date
CS454287A1 true CS454287A1 (en) 1988-06-15
CS261434B1 CS261434B1 (en) 1989-02-10

Family

ID=5388431

Family Applications (1)

Application Number Title Priority Date Filing Date
CS874542A CS261434B1 (en) 1987-06-19 1987-06-19 Photochrome 2,4,4,6-tetraphenyl-4h-pyrans and method of their production

Country Status (1)

Country Link
CS (1) CS261434B1 (en)

Also Published As

Publication number Publication date
CS261434B1 (en) 1989-02-10

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