公开(公告)号：US20120208938A1

公开(公告)日：2012-08-16

申请号：US13393503

申请日：2010-08-31

申请人： Yoshimasa Yamamoto ,  Seiichi Kawahara ,  Oraphin Chaikumpollert ,  Phan Trung Nghia

发明人： Yoshimasa Yamamoto ,  Seiichi Kawahara ,  Oraphin Chaikumpollert ,  Phan Trung Nghia

IPC分类号： C08K5/41

CPC分类号： C08K5/19 ,  C08C1/04 ,  C08L15/00

摘要： Provided is a protein-free natural rubber for which the risk of inducing allergic reactions is extremely low. Also provided are a latex of said rubber and a method for efficiently manufacturing said rubber and latex. In the provided manufacturing method, a urea compound, a surfactant, and a polar organic solvent are added to a natural rubber latex, and the proteins in said latex are denatured and then removed. This results in a protein-free rubber latex having a nitrogen content of at most 0.001% as measured by an RRIM test. Also, the amount of protein in a solid rubber obtained by drying the provided natural rubber latex is at most 0.5 μg/g as measured by an improved Lowry method.

摘要翻译： 提供了一种无蛋白质天然橡胶，其引起过敏反应的风险极低。 还提供了所述橡胶的胶乳和有效制造所述橡胶和胶乳的方法。 在所提供的制造方法中，向天然橡胶胶乳中加入尿素化合物，表面活性剂和极性有机溶剂，将所述胶乳中的蛋白质变性，然后除去。 这导致通过RRIM试验测量的，不含蛋白质的橡胶胶乳的氮含量至多为0.001％。 此外，通过干燥所提供的天然橡胶胶乳获得的固体橡胶中的蛋白质的量通过改进的Lowry法测量为至多0.5μg/ g。

公开(公告)号：US08476348B2

公开(公告)日：2013-07-02

申请号：US13393503

申请日：2010-08-31

申请人： Yoshimasa Yamamoto ,  Seiichi Kawahara ,  Oraphin Chaikumpollert ,  Phan Trung Nghia

发明人： Yoshimasa Yamamoto ,  Seiichi Kawahara ,  Oraphin Chaikumpollert ,  Phan Trung Nghia

IPC分类号： C08K5/19 ,  C08K5/41

CPC分类号： C08K5/19 ,  C08C1/04 ,  C08L15/00

摘要： Provided is a protein-free natural rubber for which the risk of inducing allergic reactions is extremely low. Also provided are a latex of said rubber and a method for efficiently manufacturing said rubber and latex. In the provided manufacturing method, a urea compound, a surfactant, and a polar organic solvent are added to a natural rubber latex, and the proteins in said latex are denatured and then removed. This results in a protein-free rubber latex having a nitrogen content of at most 0.001% as measured by an RRIM test. Also, the amount of protein in a solid rubber obtained by drying the provided natural rubber latex is at most 0.5 μg/g as measured by an improved Lowry method.

摘要翻译： 提供了一种无蛋白质天然橡胶，其引起过敏反应的风险极低。 还提供了所述橡胶的胶乳和有效制造所述橡胶和胶乳的方法。 在所提供的制造方法中，向天然橡胶胶乳中加入尿素化合物，表面活性剂和极性有机溶剂，将所述胶乳中的蛋白质变性，然后除去。 这导致通过RRIM试验测量的，不含蛋白质的橡胶胶乳的氮含量至多为0.001％。 此外，通过干燥所提供的天然橡胶胶乳获得的固体橡胶中的蛋白质的量通过改进的Lowry法测量为至多0.5mug / g。