STRUCTURE OF ADJUSTABLE STERIC HINDRANCE WEAK BASIC LIGHT STABILIZER AND PREPARATION METHOD AND APPLICATION THEREOF
申请人:Shaoxing Ruikang Biotechnologies Co., Inc
公开号:US20220145045A1
公开(公告)日:2022-05-12
The field of new compounds and synthesis methods thereof are related, and particularly to a structure of a steric hindrance adjustable weak base light stabilizer and a preparation method and application thereof. According to the innovative light stabilizer, a steric hindrance thereof is adjusted by establishing substituent generating the steric hindrance around nitrogen atoms; moreover, an electronegativity of the nitrogen atom can be influenced by adjusting a distance of a polar group, so that an alkalinity or a nucleophilicity of the nitrogen atom is adjusted. A desired effect is obtained by adjusting a steric hindrance and a nucleophilic property or an alkalinity where the nitrogen atom is located, so that an application range of the innovative light stabilizer is widened, and the innovative light stabilizer is suitable for PC, polyester, PVC and other slightly acidic or certain electrophilic polymer materials to serve as a light stability protecting aid.
新化合物和合成方法领域相关,特别是一种结构可调节立体位阻的弱碱光稳定剂及其制备方法和应用。根据这种创新的光稳定剂,通过在氮原子周围引入产生立体位阻的取代基来调节其立体位阻;此外,通过调节极性基团的距离可以影响氮原子的电负性,从而调节氮原子的碱性或亲核性。通过调节氮原子所在位置的立体位阻、亲核性或碱性,可以获得所需的效果,从而扩大创新光稳定剂的应用范围,使其适用于PC、聚酯、PVC等微酸性或某些亲电性聚合材料,作为光稳定保护助剂。