Page 56 - WINGS OF AGRI-INNOVATIONS

14. Patent Application no.: 128921 16. Patent Application no.: 1063/CAL/1974
Title: Improvements in or relating to Title: An improved method for

methylenedioxyphenyl derivatives preparation of 1,1-di-(4-chlorophenyl)-2,
Date of Filing: August 21, 1970 2,2-trichloroethanol
Granted date: October 24, 1970 Date of Filing: May 14, 1974
Brief about technology: The invention relates to Granted date: August 23, 1975
Methylenedioxyphenyl derivatives which constitute Brief about technology: The invention relates
economical and efficient synergists for pyrethrins to the preparationof 1,1-di-(4-chlorophenyl)-2,
and particularly to methylenedioxyphenyl derivatives 2,2trichloroethanol commonly known as Dicofol
containing at least a 3-carbon side chain on the or Kelthane from 1,1-di-(4-cholorophenyl)-1, 2, 2,
benzene nucleus, a methylenedioxy group at the 3, 4 2-tetracholoroethane for use as an acaricide and synergist
positions and two methoxy groups at positions 5 and for various type of DDT formulations.
6 of the nucleus.

17. Patent Application no.: 1442/CAL/74

Title: Improvements in or relating to preparation of alpha-
substituted 3,4-methylenedioxycinnamoyl derivatives as
synergists for pyrethrins
15. Patent Application no.: 133090 Date of Filing: June 27, 1954
Title: Improvements in or relating to preparation
Granted date: October 11, 1975
of 2, 2, 2-trichloro-1, 1-di-(4-chlorophenyl) ethanol Brief about technology: This invention relates to
Date of Filing: October 01, 1971 methylenedioxyphenyl derivatives which constitutes a potent
Granted date: September 16, 1972 group synergists for
Brief about technology: The invention pyrethrins and carbamates and more particularly to the
relates to preparation of 2, 2, 2 –trichloro condensation products of an aromatic aldehyde bearing a
1, 1-di (4-chlorophenyl) ethanol from 1,1-di methylenedioxy function with reactive aliphatic carbonyl
(4-cholorophenyl)-1, 2, 2, 2-tetrachloroethane for use compounds such as aliphaticaldehydes or anhydrides to get the
as an acaricide as well as a synergist for various types desired cinnamoyl derivatives having alkyl (C1-C8) substituents
of D.D.T formulations. at the alpha carbon atom.

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