GB947686A - 2-hydroxy-2-methylbenzophenone ultraviolet absorbers - Google Patents

2-hydroxy-2-methylbenzophenone ultraviolet absorbers

Info

Publication number
GB947686A
GB947686A GB3974162A GB3974162A GB947686A GB 947686 A GB947686 A GB 947686A GB 3974162 A GB3974162 A GB 3974162A GB 3974162 A GB3974162 A GB 3974162A GB 947686 A GB947686 A GB 947686A
Authority
GB
United Kingdom
Prior art keywords
methyl
hydroxy
methylbenzophenone
benzophenone
ultraviolet absorbers
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
GB3974162A
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB947686A publication Critical patent/GB947686A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/45—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation
    • C07C45/46—Friedel-Crafts reactions
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
    • C07C49/82—Ketones containing a keto group bound to a six-membered aromatic ring containing hydroxy groups
    • C07C49/83—Ketones containing a keto group bound to a six-membered aromatic ring containing hydroxy groups polycyclic
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
    • C07C49/84—Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C08K5/132—Phenols containing keto groups, e.g. benzophenones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention comprises 21-methyl -2- hydroxy -4- methoxy benzophenone and 21-methyl-2, 4-dihydroxy benzophenone. Example 1 describes the preparation of 21-methyl -2, 4-dihydroxy benzophenone by reacting o-toluic acid with thionyl chloride in the presence of pyridine and then reacting the resulting acid chloride with resorcinol in the presence of aluminium chloride using chlorobenzene as solvent. Example 2 describes the preparation 21-methyl -2- hydroxy -4- methoxy benzophenone by a method similar to that used in Example 1 employing 1, 3-dimethoxybenzene in place of resorcinol.ALSO:Polystyrenes are stabilized against degradation by ultra-violet light by incorporating therein from 0.01 to 10 weight per cent of 21- methyl - 2 - hydroxy - 4 - methoxybenzophenone or 21 - methyl - 2,4 - dihydroxybenzophenone.
GB3974162A 1961-12-08 1962-10-19 2-hydroxy-2-methylbenzophenone ultraviolet absorbers Expired GB947686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15810961A 1961-12-08 1961-12-08

Publications (1)

Publication Number Publication Date
GB947686A true GB947686A (en) 1964-01-29

Family

ID=22566722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3974162A Expired GB947686A (en) 1961-12-08 1962-10-19 2-hydroxy-2-methylbenzophenone ultraviolet absorbers

Country Status (1)

Country Link
GB (1) GB947686A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128692A2 (en) * 1983-06-07 1984-12-19 Imperial Chemical Industries Plc Process for the preparation of 4-hydroxy-benzophenones
EP0128693A2 (en) * 1983-06-07 1984-12-19 Imperial Chemical Industries Plc Process for the preparation of 4-hydroxybenzophenones

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128692A2 (en) * 1983-06-07 1984-12-19 Imperial Chemical Industries Plc Process for the preparation of 4-hydroxy-benzophenones
EP0128693A2 (en) * 1983-06-07 1984-12-19 Imperial Chemical Industries Plc Process for the preparation of 4-hydroxybenzophenones
EP0128693A3 (en) * 1983-06-07 1985-10-09 Imperial Chemical Industries Plc Process for the preparation of 4-hydroxybenzophenones
EP0128692A3 (en) * 1983-06-07 1985-10-30 Imperial Chemical Industries Plc Process for the preparation of 4-hydroxy-benzophenones

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