| 摘要 |
1. Fluid heat-carrier preparation comprising : a) 25% by weight of polyethyleneglycol having a molecular weight of 180 to 250 and a pour point, determined in accordance with DIN 51 583, of -50 +- 3 degrees C ; b) 20 +- 1% by weight of 1,2-propyleneglycol ; c) 10 to 1000 ppm of polyethyleneoxide having a molecular weight of 4 to 6 . 10**6 ; and d) about 50% by weight of demineralized water. |
