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US 12,559,453 B2Granted
Sulfonic acid-modified polyisocyanate and preparation method therefor
AssigneeWanhua Chemical Group Co., Ltd.
InventorsXundi Yin, Xueshun Ji, Yunquan Jin, Cuicui Wang, Rubao Shen, Yuyang Cao
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Abstract
Disclosed are a sulfonic acid-modified polyisocyanate and a preparation method thereof. By controlling a content of cyclohexylamine component in the raw material, the reaction rate of sulfamic acid and polyisocyanate is accelerated, so that the prepared product has advantages of light color and low turbidity as well as good storage stability.
Claims20
A sulfonic acid-modified polyisocyanate, which is a reaction product obtained from a reaction comprising the following components:
- a) at least one polyisocyanate component;
- b) at least one organic compound with one or more of a sulfonic acid group and/or a sulfonate group, wherein the compound contains at least one of a mercapto group, a primary amino group or a secondary amino group;
- c) at least one tertiary amine;
- d) at least one cyclohexylamine with the following structure:
- wherein, R1 is one of cyclohexyl, cyclohexylmethyl, p-methylcyclohexyl, 2-methylcyclohexyl, 2,3-dimethylcyclohexyl, 3,3,5-trimethylcyclohexyl or 4-tert-butylcyclohexyl, and R2 is hydrogen or a saturated or unsaturated, linear or branched, aliphatic or alicyclic or aromatic organic group having 1 to 18 carbon atoms
- wherein based on a mass of the component a) being 1000 parts, a mass of the component d) added is 0.05-2 parts.
3 more elements
Dependencies are inferred from the claim text.