Çok küçük parçaciklar halinde yeni sentetik kalkolümit bilesikleri, bunlarin üretimine mahsus islem, çok küçük parçaciklar halinde sentetik kalkolümit bilesikleri içeren isi izolasyon malzemesi ve zirai amaçli seffaf tabakalar.

摘要

Novel, fine particulate synthetic chalcoalumite, process for preparation thereof, and a heat insulating agent and agricultural film containing said fine, particulate synthetic chalcoalumite. The above objects are met by synthetic chalcoalumite represented by formula (1) below: (M1<2+>)a-x(M2<2+>)xAl<3+>4(OH)b(A)c . mH2O (in which M1<2+> stands for Zn<2+> or Cu<2+>, M2<2+> is at least one divalent metal ion selected from Ni <2+>, Co<2+>, Cu<2+>, Zn<2+> and Mg<2+>, a is 0.3 < a < 2.0 (with the proviso that M1 and M2 are not the same), x is 0 is at least one selected from SO4<2->, HPO4<2->, CO3<2->, SO3<2->, HPO3<2->, NO3<->, H2PO4<->, Cl<->, OH<-> and silicic ion, c is 0.4 < c < 2.0 and m is 0-4), which has an average secondary particle diameter of not more than about 3 mu m and a BET specific surface area of not more than about 30 m<2>/g; resin compositions containing the same; and agricultural film composed of said resin compositions.