阅读说明：本技术 反应型紫外光吸收剂及其应用 (Reactive ultraviolet absorber and application thereof ) 是由 曲清蕃 吴皇旻 张玮骏 吴其峰 郑经豪 吴少轩 于 2017-07-07 设计创作，主要内容包括：一种适用于聚氨酯的反应型紫外光吸收剂,其化学式1所示的化合物：<Image he="333" wi="700" file="DDA0002226111200000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>其中,R1是H或Cl。(A reactive ultraviolet absorber suitable for polyurethane, which is a compound represented by chemical formula 1: wherein R1 is H or Cl.)

A reactive ultraviolet absorber, characterized by a compound represented by chemical formula 1:

wherein R1 is H or Cl.

A polyurethane precursor composition, comprising:

(a) a polyol;

(b) a polyisocyanate; and

(c) the reactive ultraviolet absorber according to claim 1,

wherein the reactive ultraviolet absorber is present in an amount of about 0.1 wt% to about 50 wt%, based on the total weight of component (a), component (b), and component (c).

The polyurethane precursor composition of claim 2, wherein the reactive ultraviolet absorber is present in an amount from about 0.5 wt% to about 10 wt%, based on the total weight of component (a), component (b), and component (c).

The polyurethane precursor composition of claim 2, wherein the polyol is selected from the group consisting of: ethylene glycol, 1, 2-propylene glycol, 1, 3-propylene glycol, 1, 2-butylene glycol, 1, 3-butylene glycol, 1, 4-butylene glycol, glycerol, trimethylolpropane, Pentaerythritol, Polycarbonate polyols, polyacrylate polyols, polyether polyols, polyester polyols, and combinations thereof.

The polyurethane precursor composition of claim 2, wherein the polyisocyanate is selected from the group consisting of: toluene Diisocyanate (TDI), diphenylmethane diisocyanate (MDI), Hexamethylene Diisocyanate (HDI), cyclohexane diisocyanate (CHDI), tetramethylxylylene diisocyanate (TMXDI), 1, 3-bis (isocyanatomethyl) cyclohexane (Hydrogenated m-Xylylene diisocyanate, H6XDI), Isophorone diisocyanate (isophor diisocyanate, IPDI), methylenebis (4-cyclohexylisocyanate) (hcdi), biuret, dimers and trimers and prepolymers of the foregoing, and combinations thereof.

The polyurethane precursor composition of any one of claims 2-5, further comprising a component selected from the group consisting of: solvents, catalysts, antioxidants, fillers, compatibilizers, flame retardants, heat stabilizers, light stabilizers, metal deactivators, plasticizers, lubricants, emulsifiers, dyes, pigments, brighteners, antistatic agents, blowing agents, chain extenders, hydrolysis resistance agents, surfactants, crosslinking agents, photoinitiators, pH adjusters, adhesion promoters, bactericides, and combinations thereof.

The polyurethane precursor composition of claim 6, wherein the chain extender is a hydrophilic chain extender selected from the group consisting of: dimethylolpropionic acid (DMPA), dimethylolbutyric acid (DMBA), and combinations thereof.

Polyurethane resistant to the harmful effects of ultraviolet light, obtained by polymerization of a polyurethane precursor composition according to any one of claims 2 to 7.

A polyurethane article comprising the polyurethane fiber, coating, elastomer, foam, adhesive, or sealant of claim 8.

A method of combating the harmful effects of ultraviolet light, characterized in that it uses a polyurethane according to claim 8.