Liquid polythioethers
First Claim
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1. A non-crystallizing, water, solvent, and fuel resistant liquid polythioether having two to four terminating radicals which do not substantially reduce the water, solvent, and fuel resistance and a water, solvent, and fuel resistant polymeric backbone having repeating units of the formula:
- ##STR12## wherein each of R1, R2, R3 and R4 is hydrogen or lower alkyl providing that a sufficient number of R1, R2, R3 and/or R4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing;
X is a divalent organic radical selected from --CH2 --CH2 --, --CH2 --CH2 --CH2 --CH2 --, --CH2 --CH2 --S--CH2 --CH2 -- or --CH2 --CH2 --O--CH2 --CH2 --;
n is 8 to 200; and
p is 0 or 1.
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Abstract
A non-crystallizing, water, solvent, fuel and temperature resistant liquid polythioether having two to four terminating radicals which do not substantially reduce the water, solvent, fuel and temperature resistance and a water, solvent, fuel and temperature resistant polymeric backbone having repeating units of the formula: ##STR1## wherein each of R1, R2, R3 and R4 is hydrogen or lower alkyl providing that a sufficient number of R1, R2, R3 and/or R4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing; X is a divalent organic radical selected from --CH2 --CH2 --, --CH2 --CH2 --CH2 --CH2 --, --CH2 --CH2 --S--CH2 --CH2 -- or --CH2 --CH2 --O--CH2 --CH2 --; n is 8 to 200; and p is 0 or 1.
225 Citations
101 Claims
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1. A non-crystallizing, water, solvent, and fuel resistant liquid polythioether having two to four terminating radicals which do not substantially reduce the water, solvent, and fuel resistance and a water, solvent, and fuel resistant polymeric backbone having repeating units of the formula:
- ##STR12## wherein each of R1, R2, R3 and R4 is hydrogen or lower alkyl providing that a sufficient number of R1, R2, R3 and/or R4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing;
X is a divalent organic radical selected from --CH2 --CH2 --, --CH2 --CH2 --CH2 --CH2 --, --CH2 --CH2 --S--CH2 --CH2 -- or --CH2 --CH2 --O--CH2 --CH2 --;
n is 8 to 200; and
p is 0 or 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 44, 45, 46, 47, 48, 49, 98, 99)
- ##STR12## wherein each of R1, R2, R3 and R4 is hydrogen or lower alkyl providing that a sufficient number of R1, R2, R3 and/or R4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing;
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29. A non-crystallizing, linear, water, solvent and fuel resistant liquid polythioether having the formula ##STR13## wherein each of R1, R2, R3 and R4 is hydrogen or lower alkyl with the provision that a sufficient number of R1, R2, R3 and/or R4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing;
- X is a divalent organic radical selected from --CH2 --CH2 --, --CH2 --CH2 --CH2 --CH2 --, --CH2 --CH2 --S--CH2 --CH2 --, or --CH2 --CH2 --O--CH2 --CH2 --;
n is 8 to 200, p is 0 or 1 and B is a terminating radical which does not substantially reduce the water, solvent and fuel resistance. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
- X is a divalent organic radical selected from --CH2 --CH2 --, --CH2 --CH2 --CH2 --CH2 --, --CH2 --CH2 --S--CH2 --CH2 --, or --CH2 --CH2 --O--CH2 --CH2 --;
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50. A non-crystallizing, branched, water, solvent, and fuel resistant liquid polythioether, said liquid polythioether having the formula R--(A--O--B)m wherein R is the fragment of the organic triol or tetrol R--(OH)m having a molecular weight of less than 400;
- m is 3 or 4;
B is a terminating radical which does not substantially reduce the water, solvent, and fuel resistance; and
A is a polymeric backbone of repeating units of the formula ##STR14## wherein each of R1, R2, R3 and R4 is hydrogen or lower alkyl providing that a sufficient number of R1, R2, R3 and/or R4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing;
X is a divalent organic radical selected from --CH2 --CH2 --, --CH2 --CH2 --CH2 --CH2, --CH2 --CH2 --S--CH2 --CH2 -- or --CH2 --Ch2 --O--CH2 --CH2 --;
n is 8 to 200;
m is 3 or 4; and
p is 0 to 1. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 100)
- m is 3 or 4;
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74. A non-crystallizing, water, solvent, and fuel resistant liquid polythioether having the formula ##STR15## wherein Z is hetero(lower) aliphatic;
- B is a terminating radical which does not substantially reduce the water, solvent, and fuel resistance;
A is a polymeric backbone consisting of repeating units of the formula ##STR16## each of a, b, and p is 0 or 1;
each of R1, R2, R3 and R4 is hydrogen or lower alkyl providing that a sufficient number of R1, R2, R3 and/or R4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing;
X is a divalent organic radical selected from --CH2 --CH2 --, --CH2 --CH2 --CH2 --CH2 --, --CH2 --CH2 --S--CH2 --CH2 -- or --CH2 --CH2 --O--CH2 --CH2 --; and
n is 8 to 200. - View Dependent Claims (75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 101)
- B is a terminating radical which does not substantially reduce the water, solvent, and fuel resistance;
Specification
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Current AssigneePRC-DeSoto International, Inc. (Nouryon BV)
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Original AssigneeProducts Research & Chemical Corporation
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InventorsSingh, Hakam, Hutt, Jack W., Williams, Morris E.
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Primary Examiner(s)Marquis, Melvyn I.
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Application NumberUS06/248,994Time in Patent Office638 DaysField of Search528/373, 568/44, 568/45, 568/46US Class Current528/373CPC Class CodesC08G 18/52 PolythioethersC08G 59/302 containing sulfurC08G 65/34 from hydroxy compounds or t...C08G 65/48 Polymers modified by chemic...C08G 75/02 PolythioethersC08G 75/12 Polythioether-ethers C08G75...C08G 75/14 PolysulfidesC08L 63/00 Compositions of epoxy resin...C08L 71/00 Compositions of polyethers ...C08L 81/00 Compositions of macromolecu...
