SULFUR-CONTAINING POLYURETHANE
First Claim
Patent Images
1. Sulfur-containing polyurethane comprising the reaction product of:
- (a) material chosen from polyisocyanate, polyisothiocyanate or mixtures thereof;
(b) material chosen from trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole, trifunctional or higher-functional polythiol having molecular weight of less than or equal to 700 grams/mole, trifunctional or higher-functional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 700 grams/mole, and mixtures thereof; and
(c) material chosen from diol having molecular weight of less than or equal to 200 grams/mole, dithiol having molecular weight of less than or equal to 600 grams/mole, difunctional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 600 grams/mole, and mixtures thereof, wherein at least one of (a), (b) or (c) is sulfur-containing.
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Abstract
Sulfur-containing polyurethane comprising the reaction product of:
- (a) material chosen from polyisocyanate, polyisothiocyanate or mixtures thereof;
- (b) material chosen from trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole, trifunctional or higher-functional polythiol having molecular weight of less than or equal to 700 grams/mole, trifunctional or higher-functional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 700 grams/mole, and mixtures thereof; and
- (c) material chosen from diol having molecular weight of less than or equal to 200 grams/mole, dithiol having molecular weight of less than or equal to 600 grams/mole, difunctional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 600 grams/mole, and mixtures thereof, wherein at least one of (a), (b) or (c) is sulfur-containing.
103 Citations
25 Claims
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1. Sulfur-containing polyurethane comprising the reaction product of:
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(a) material chosen from polyisocyanate, polyisothiocyanate or mixtures thereof; (b) material chosen from trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole, trifunctional or higher-functional polythiol having molecular weight of less than or equal to 700 grams/mole, trifunctional or higher-functional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 700 grams/mole, and mixtures thereof; and (c) material chosen from diol having molecular weight of less than or equal to 200 grams/mole, dithiol having molecular weight of less than or equal to 600 grams/mole, difunctional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 600 grams/mole, and mixtures thereof, wherein at least one of (a), (b) or (c) is sulfur-containing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A sulfur-containing polyurethane comprising the reaction product of:
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(a) at least one of polyisocyanate, polyisothiocyanate or mixture thereof; (b) trifunctional or higher-functional polythiol having molecular weight of less than or equal to 700 grams/mole; and (c) dithiol having molecular weight of less than or equal to 600 grams/mole, wherein said dithiol comprises dithiol oligomer having number average molecular weight of less than or equal to 600 grams/mole, with the proviso that said dithiol oligomer constitutes less than or equal to 70 mole percent of (c) reactant. - View Dependent Claims (16, 18)
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17. A sulfur containing polyurethane comprising the reaction product of:
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(a) at least one of polyisocyanate, polyisothiocyanate or mixture thereof; (b) trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole; and (c) dithiol having molecular weight of less than or equal to 600 grams/mole, wherein said dithiol comprises dithiol oligomer having number average molecular weight of less than or equal to 600 grams/mole, with the proviso that said dithiol oligomer constitutes less than or equal to 70 mole percent of (c) reactant. - View Dependent Claims (19)
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20. A sulfur-containing polyurethane comprising reaction product of:
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(a) at least one material chosen from polyisocyanate, polyisothiocyanate or mixtures thereof; (b) at least one material chosen from trifunctional or higher-functional polyol, trifunctional or higher-functional material containing both hydroxyl and SH groups, trifunctional or higher-functional polythiol, or mixtures thereof; and (c) at least one material chosen from diol, dithiol, difunctional material containing both hydroxyl and SH groups, or mixtures thereof, wherein at least one of (a), (b) or (c) is sulfur-containing; and
wherein the ratio of the sum of the number of equivalents of (b) to the sum of the number of equivalents in (a) is from 0.05;
1.0 to 0.4;
1.0. - View Dependent Claims (21)
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22. A method of preparing sulfur-containing polyurethane comprising:
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(a) reacting at least one of polyisocyanate, or polyisothiocyanate or mixture thereof with at least one of trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole, trifunctional or higher-functional polythiol having molecular weight of less than or equal to 700 grams/mole, trifunctional or higher-functional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 700 grams/mole, or mixtures thereof;
to form polyurethane prepolymer, and(b) reacting said prepolymer with at least one active hydrogen-containing material chosen from diol having molecular weight of less than or equal to 200 grams/mole, dithiol having molecular weight of less than or equal to 600 grams/mole, difunctional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 600 grams/mole, or mixtures thereof, wherein at least one of (a) or (b) is sulfur-containing. - View Dependent Claims (23)
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24. A method of preparing sulfur-containing polyurethane comprising reacting
(a) at least one material chosen from polyisocyanate, polyisothiocyanate or mixtures thereof; -
(b) at least one material chosen from trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole, trifunctional or higher-functional polythiol having molecular weight of less than or equal to 700 grams/mole, trifunctional or higher-functional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 700 grams/mole, or mixtures thereof; and (c) at least one material chosen from diol having molecular weight of less than or equal to 200 grams/mole, dithiol having molecular weight less of than or equal to 600 grams/mole, difunctional material containing both hydroxyl and SH groups having molecular weight of less than or equal to 600 grams/mole, or mixtures thereof, in a one-pot process, wherein at least one of (a), (b) or (c) is sulfur-containing. - View Dependent Claims (25)
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Specification