[Gmcnet] Duracool versus HC12a

[Emery Stora]

>>
Someone had asked me "what is the difference between Duracool and  
HC12a?"

Duracool is a Canadian product and a Canadian trade name.  The fellow  
that held the US patents on it was having it manufactured in Canada.  
Then the company in Canada that made Duracool started selling it in  
the USA without paying royalties to the fellow that held the patent in  
the USA (Gary Lindgren),  So Mr. Lindgren found a company to  make it  
in the US but labeled his product HC12a (which stands for hydrocarbon  
replacement for Freon 12).    It is identical in composition to  
Duracool (a mixture of refined propane and isobutane) with the only  
difference that it is made in the USA instead of Canada.

So, if you buy Duracool you are buying a Canadian product from a  
company that stiffed the US patent holder.  I no longer buy Duracool  
but I buy HC12a which is the same thing chemically.

Emery Stora
77 Kingsley
Santa Fe, NM