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New liq. polythioether(s) contg. no oxygen in the polymer backbone - are prepd. by low temp. condensation of a prim. mercaptan and a sec. hydroxyl beta to a sulphur atom
New liq. polythioether(s) contg. no oxygen in the polymer backbone - are prepd. by low temp. condensation of a prim. mercaptan and a sec. hydroxyl beta to a sulphur atom
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机译:新液体聚硫醚续聚合物主链中没有氧-已制备。在低温下底漆的凝结。硫醇和一秒钟。羟基β为硫原子
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摘要
(I) Liq. polythioethers contg. no oxygen in the polymeric backbone which are non-crystallising and water and fuel resistant and have the formula (I). In (I), each of R2 and R3 = H or lower alkyl each of R1 and R4 = lower alkyl R = lower alkylene or lower alkyl thioether p = 0-3; n = 8 -200; r = 0 or 1; a = 0 or 1; m = 1,3 or 4; when m = 1, r = 1; when m = 3 or 4, a = 1; Ri = an organic divalent radical having no chemically reactive gps. of an organic prim. dimercaptan Ri-(SH)2 each mercaptan gp. being prim. and Rii= a tri- or tetra-valent organic fragement having no chemically reactive gps. of the cpd. Rii- (Z)q where Z = a sec. OH located beta to a sulphur atom or mercaptan gp. and q = 3 or 4 are new. Prepn. of liq. polythioethers, which are non-crystallising, are water and fuel resistant and have mol.wt. 900-25,000 by heating is also disclosed.
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机译:(I)Liq。聚硫醚在聚合物主链中没有氧,该氧是非结晶的并且耐水和燃料并且具有式(I)。在(I)中,R 2和R 3各自为H或低级烷基,R 1和R 4各自为低级烷基,R =低级亚烷基或低级烷基硫醚,p = 0-3; n = 8 -200; r = 0或1; a = 0或1; m = 1,3或4;当m = 1时,r = 1;当m = 3或4时,a = 1; Ri =不具有化学反应性gps的有机二价基团。有机素。二硫醇Ri-(SH)2每个硫醇gp。是首要的Rii =不具有化学反应性gps的三价或四价有机碎片。的cpd。 Rii-(Z)q,其中Z =秒。 OH位于硫原子或硫醇gp的β处。 q = 3或4是新的。准备的液量非结晶的聚硫醚是抗水和燃料的,并且具有mol.wt。还公开了通过加热900-25,000。
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