Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-10-26
1997-01-21
Zemel, Irina
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
264 53, 264 455, 321 56, C08J 918, B29B 1700, C08F 1208
Patent
active
055960456
ABSTRACT:
Expandable styrene polymers containing recycled polystyrene have a content of recycled material of up to 40% by weight, based on the total weight of the polystyrene, wherein, in the course of the polymerization of the reaction mixture, from 100 to 500 ppm of a molecular weight regulator and/or from 0.05 to 1.0% by weight, based in each case on the polymerization solution, of a finely divided polyethylene wax are added.
REFERENCES:
patent: 4452751 (1984-06-01), McCullough
patent: 4990540 (1991-02-01), Hahn et al.
patent: 5269948 (1993-12-01), Krutchen
Encyclopedia of Polymer Science and Engineering, T. Wiley & Sons, 1989, v. 16, pp. 193-205.
Derwent JP 5098062 abstract Apr. 1993.
Japanese Abstract JP 5 6060 096.
Alicke Gerhard
Hahn Klaus
Husemann Wolfram
Kaempfer Knut
Scherzer Dietrich
BASF - Aktiengesellschaft
Zemel Irina
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