Alkyleneoxy fugitive tints and process for preparing same
CA 1182814 A · Owner: Milliken Research Corporation · Inventors: Brendle, Ralph N.; Keller, Margaret S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fugitive tints are provided which are characterized by the formula:, where R is an aromatic group containing from 6 to about 20 carbon atoms capable of imparting coloration to said compound when coupled to said 2-amino, 6-methoxy benzathiazole moiety; A is a linking moiety selected from the group consisting of N O, S, and CO2; the alkylene moiety of the alkyleneoxy constituent contains from 2 to about 4 carbon atoms; n is an integer of from 2 to about 300; m is 1 when A is O S, or CO2, and 2 when, A is N; x is an integer of from 1 to about 5; and the product of n times m times x (n.m.x) is from 2 to about 400. Also provided is a process for preparing alkyleneoxy fugitive tints. This …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.