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    • 3. 发明申请
    • METHODS AND COMPOSITIONS FOR PREPARING PARTICLE BOARDS
    • 制备颗粒物的方法和组合物
    • WO2016186982A1
    • 2016-11-24
    • PCT/US2016/032262
    • 2016-05-13
    • TALEYARKHAN, Rusi, P.
    • TALEYARKHAN, Rusi, P.
    • C08L97/02C07C69/66
    • C08G63/06C08G63/78C08G63/88C08J3/03C08J3/12C08J3/28C08J2367/04C08L67/04C08L97/02
    • An amorphous polylactic acid polymer having a weight average molecular weight of about 35,000 to 45,000 is described. The polylactic acid polymer composition can be of particles wherein 90% of the particles have a size of 250 nm or less, a glass transition temperature about 55 to 58 degrees centigrade, and a relative viscosity at 30 degrees centigrade between 1.65 to 1.95. The polymer composition can be used to form an aqueous suspension. The material is ideal in preparing particleboards. A method is disclosed for preparing such polylactic acid polymers. The method involves obtaining an amorphous polylactic acid polymer having a weight average molecular weight of between 115,000 to 180,000. Treating the polylactic acid polymer to reduce the molecular weight between 35,000 to 45,000 such that the glass transition temperature is about 55 to 58 degrees centigrade and a relative viscosity at 30 degrees centigrade about 1.65 to 1.95. 90% of the particles must have an average diameter of 250 nm or less.
    • 描述了重均分子量为约35,000至45,000的无定形聚乳酸聚合物。 聚乳酸聚合物组合物可以是颗粒,其中90%的颗粒具有250nm或更小的尺寸,玻璃化转变温度约55至58℃,在30摄氏度下的相对粘度在1.65至1.95之间。 聚合物组合物可用于形成水性悬浮液。 该材料是制备刨花板的理想选择。 公开了制备这种聚乳酸聚合物的方法。 该方法包括获得重均分子量为115,000至180,000的无定形聚乳酸聚合物。 处理聚乳酸聚合物以降低分子量在35,000至45,000之间,使得玻璃化转变温度为约55至58℃,在30摄氏度下的相对粘度为约1.65至1.95。 90%的颗粒必须具有250nm或更小的平均直径。