AQUEOUS-LIQUID-ABSORBABLE RESIN, AQUEOUS-LIQUID-ABSORBABLE COMPOSITION, AND ABSORBER MATERIAL AND ABSORBABLE OBJECT EACH PRODUCED USING SAME
申请人:Sanyo Chemical Industries, Ltd.
公开号:EP2690133A1
公开(公告)日:2014-01-29
An absorbable resin, for which a large amount of a plant-derived raw material can be used, and which has an excellent capability of absorbing an aqueous liquid, and has a good gel modulus and therefore can exhibit an excellent absorbing capability under pressurized conditions; and an absorbable composition. An absorbable resin produced by binding an oxidized polysaccharide (A1) having a carboxyl group which may be neutralized with a neutralizing agent and/or a crosslinked product thereof (A2) to a poly(meth)acrylic acid (B1) in which at least one carboxyl group may be neutralized with a neutralizing agent and/or a crosslinked product thereof (B2); or an absorbable composition produced by mixing the component (A1) and/or the component (A2) with the component (B1) and/or the component (B2). The component (A1) has a weight average molecular weight of 2,000-10,000,000. The component (A1) has an acid value of 65-850 mgKOH/g. When the component (A1) has a carboxyl group which is neutralized with a neutralizing agent, the acid value of the component (A1) before the neutralization is 65-850 mgKOH/g.
一种可吸收树脂,可使用大量植物提取原料,具有极佳的吸收水性液体的能力,并具有良好的凝胶模量,因此可在加压条件下表现出极佳的吸收能力;以及一种可吸收组合物。将具有可被中和剂和/或其交联产物(A2)中和的羧基的氧化多糖(A1)与至少一个羧基可被中和剂和/或其交联产物(B2)中和的聚(甲基)丙烯酸(B1)结合而制得的可吸收树脂;或将组分(A1)和/或组分(A2)与组分(B1)和/或组分(B2)混合而制得的可吸收组合物。组分(A1)的重量平均分子量为 2,000-10,000,000 。组分(A1)的酸值为 65-850 mgKOH/g。当组分(A1)具有用中和剂中和的羧基时,中和前组分(A1)的酸值为 65-850 mgKOH/g。