Claims
- 1. Perfluoropolyethers of the formula: ##STR12## wherein: T is a perfluoroalkyl group containing a Cl atom selected from, ##STR13## R and R', alike or different from each other, are fluorine or chlorine; and the indexes m, n, are numbers ranging from 0 to 20, extremes included, p ranges from 0 to 40, extremes included, and q ranges from 0 to 10, extremes included with the following provisos:
- 1. when m=0, n ranges from 1 to 20, and (p+q)/n ranges from 0.01 to 0.5, extremes included;
- 2. when n=0, also q is 0, m ranges from 1 to 20, and p/m ranges from 0.5 to 2, extremes included; and
- 3. when n and m are other than 0, m+n ranges from 1 to 20, and (p+q)/(m+n) ranges from 0.01 to 0.5, extremes included,
- wherein the repeating units are randomly distributed along the chain.
- 2. Perfluoropolyethers of the formula: ##STR14## wherein: T is a perfluoroalkyl group containing a Cl atom selected from ##STR15## R and R', alike or different from each other, are flourine or chlorine; and the indexes m, n, are numbers ranging from 0 to 20, extremes included, p ranges from 0 to 40, extremes included, and q ranges from 0 to 10, extremes included with the following provisos:
- 1. When m=0, n ranges from 1 to 20;
- 2. when n=0, also q is 0, m ranges from 1 to 20, and p/m ranges from 0.5 to 2, extremes included; and
- 3. when n and m are other than 0, m+n ranges from 1 to 20, and (p+q)/(m+n) ranges from 0.01 to 0.5, extremes included,
- wherein the repeating units are randomly distributed along the chain.
Priority Claims (1)
Number |
Date |
Country |
Kind |
20407/88 |
May 1988 |
ITX |
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DISCLOSURE OF THE INVENTION
This is a continuation of application Ser. No. 08/024,975, filed on Mar. 2, 1993 now abandoned which is a continuation-in-part of Ser. No. 07/744,731, filed on Aug. 14, 1991, now abandoned, which is a divisional of Ser. No. 07/346,479, filed Mar. 2, 1989, now U.S. Pat. No. 5,051,158
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346479 |
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Continuations (1)
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24975 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
744731 |
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