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Gypsum mixture having improved mechanical properties and process for adding an additive to gypsum
Gypsum mixture having improved mechanical properties and process for adding an additive to gypsum
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机译:具有改善的机械性能的石膏混合物以及向石膏中添加添加剂的方法
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摘要
Gypsum mixture (A) contains at least one additive consisting essentially of (i) at least one silane (I) and/or polysiloxane (II) and (ii) at least one salt (III) of an inorganic acid and metal of subgroups IIIA-VIIIA, IB or IIB, optionally also other additives or auxiliaries. Gypsum mixture (A) contains at least one additive consisting essentially of (i) at least one silane (I) and/or polysiloxane (II) and (ii) at least one salt (III) of an inorganic acid and metal of subgroups IIIA-VIIIA, IB or IIB, optionally also other additives or auxiliaries. (I) has formula R xSi(OR') y and (II) contains at least two groups of formula SiR m(OR') n. each R : optionally substituted organic group; x : 0-3; each R' : 1-4C alkyl; y : 1-4, with x + y = 4; m : 0-2; n : 1-3, with m + n = 3 or lower . Independent claims are included for: (1) method for preparing (A) by homogeneous dispersion of (I) and (II) into gypsum; and (2) shaped articles and plaster boards prepared at least partly from (A).
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机译:石膏混合物(A)包含至少一种基本上由(i)至少一种硅烷(I)和/或聚硅氧烷(II)组成的添加剂和(ii)至少一种无机酸与IIIA族金属的盐(III)组成的添加剂-VIIIA,IB或IIB,可选地还包括其他添加剂或助剂。石膏混合物(A)包含至少一种基本上由(i)至少一种硅烷(I)和/或聚硅氧烷(II)组成的添加剂和(ii)至少一种无机酸与IIIA族金属的盐(III)组成的添加剂-VIIIA,IB或IIB,可选地还包括其他添加剂或助剂。 (I)具有式R x Si(OR')y且(II)包含至少两个式SiR m(OR')n的基团。每个R:任选取代的有机基团; x:0-3;每个R′:1-4C烷基; y:1-4,x + y = 4; m:0-2; n:1-3,m + n = 3或更低。包括以下独立权利要求:(1)通过将(I)和(II)均匀分散在石膏中制备(A)的方法; (2)至少部分由(A)制备的成型制品和石膏板。
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