Dear billstrain,
I think this satisfies your description.
Patent 4 032 473 Water-based defoamer compositions: describes a
defoamer where silicone oil is optional.
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=/netahtml/search-adv.htm&r=4&p=1&f=G&l=50&d=pall&S1=(defoamer.TTL.+AND+water.TTL.)&OS=ttl/defoamer+and+ttl/water&RS=(TTL/defoamer+AND+TTL/water)
Search strategy:
patent database
within the database the search terms were defoamer and water
Please select clarify answer if I have misunderstood.
Regards, |
Request for Answer Clarification by
billstrain-ga
on
01 Aug 2002 12:19 PDT
can not access link--error statement.unaable to retrive data.
|
Clarification of Answer by
ozguru-ga
on
01 Aug 2002 13:59 PDT
Dear billstrain,
Sorry about the width....
Scroll all the way to the right.
Then select the entire line.
Copy and paste the entire into the address of a browser window.
Select Go.
or try this from www.makeashorterlink.com
http://makeashorterlink.com/?J23132A61
Regards,
|
Request for Answer Clarification by
billstrain-ga
on
02 Aug 2002 07:55 PDT
We currently manufacture defoamers containig ethylenebissteramide as
described
in the literature. We are looking for water based defoamers that do
not contain EBS or silicone oils. An example might be an emulsifiable
silica dispersion. The problem with EBS(which most paper defoamers
contain)is that it tends to leave an undesireable film on process
equipment.
|
Clarification of Answer by
ozguru-ga
on
02 Aug 2002 11:09 PDT
Thanks for the clarification. I'll keep working.
Regards
|
Clarification of Answer by
ozguru-ga
on
03 Aug 2002 01:57 PDT
Dear billstrain,
Hopefully I am gaining a better understanding of your application:
The following links were checked for silicon oil and
ethylenebissteramide:
Patent 5,679,286 Aqueous dispersions of antifoam agents::
http://makeashorterlink.com/?X11651D61
Patent 4,741,861 Silicone-based antifoam composition
http://makeashorterlink.com/?U27552D61
Patent 5,846,454 Water dispersible antifoam concentrates
http://makeashorterlink.com/?A26652D61
I think that claim 1. of Patent 4,032,473:
http://makeashorterlink.com/?J23132A61 previously mentioned: did not
contain silicon oils or ethylenebissteramide. Although, I realize that
this was not the preferred embodiment of the patent and it would lose
some of its high temperature properties I wondered if it may still be
useful for application other than the paper industry.
If the above are unsuitable, could you please suggest a further list
of unwanted components and perhaps some typical applications and I
would be happy to continue searching.
Regards,
|
