FR1540028A - New optical brighteners - Google Patents

New optical brighteners

Info

Publication number
FR1540028A
FR1540028A FR120960A FR120960A FR1540028A FR 1540028 A FR1540028 A FR 1540028A FR 120960 A FR120960 A FR 120960A FR 120960 A FR120960 A FR 120960A FR 1540028 A FR1540028 A FR 1540028A
Authority
FR
France
Prior art keywords
optical brighteners
new optical
new
brighteners
optical
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
FR120960A
Other languages
French (fr)
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.)
Hickson and Welch Ltd
Original Assignee
Hickson and Welch Ltd
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
Priority claimed from GB42223/66A external-priority patent/GB1152875A/en
Application filed by Hickson and Welch Ltd filed Critical Hickson and Welch Ltd
Priority to FR120960A priority Critical patent/FR1540028A/en
Application granted granted Critical
Publication of FR1540028A publication Critical patent/FR1540028A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/06—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2
    • C07D311/08—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring
    • C07D311/16—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring substituted in position 7

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
FR120960A 1966-09-21 1967-09-14 New optical brighteners Expired FR1540028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR120960A FR1540028A (en) 1966-09-21 1967-09-14 New optical brighteners

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB42223/66A GB1152875A (en) 1966-09-21 1966-09-21 Coumarin Derivatives and their use as Optical Whitening Agents
FR120960A FR1540028A (en) 1966-09-21 1967-09-14 New optical brighteners

Publications (1)

Publication Number Publication Date
FR1540028A true FR1540028A (en) 1968-09-20

Family

ID=26179438

Family Applications (1)

Application Number Title Priority Date Filing Date
FR120960A Expired FR1540028A (en) 1966-09-21 1967-09-14 New optical brighteners

Country Status (1)

Country Link
FR (1) FR1540028A (en)

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