Compositions containing hydroxyl groups and their use for the production of flameproof plastics
AssigneeBayer Aktiengesellschaft
InventorsErich Eimers, Rolf Dhein, Rolf Wiedermann
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Abstract
The instant invention is broadly directed to novel hydroxyl containing compositions and the use thereof in producing polyurethane resins. The novel products are produced by mixing a halogenated bisphenol with a hydroxypolyester and thereafter alkoxylating the mixture.
Claims6
A composition containing hydroxyl groups which has an acid number of less than 1 and a hydroxyl number in the range from 150 to 300 obtained by mixing 25 to 75% by weight of a halogenated 2,2-diphenylol propane corresponding to the general formula ##STR6## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.1 ', R.sub.2 ', R.sub.3 ', Rhd 4' represents H, C.sub.1 -C.sub.4 -alkyl, or halogen, at least 1 R = halogen, with 75 to 25% by weight of a polyester containing hydroxyl groups, obtained from saturated, unsaturated or halogenated aliphatic and/or cycloaliphatic and/or aromatic polycarboxylic acids, and a molar excess of dialcohols corresponding to the following formula ##STR7## in which X.sub.1 to X.sub.8 = H, or C.sub.1 -C.sub.4 -alkyl,
- n = 1 - 10,
- A = o or S
- and by subsequently alkoxylating in the presence of alkaline reacting substances the aforementioned mixture with an alkylene oxide corresponding to the formula ##STR8## in which R = H, CH.sub.3, CH.sub.2 OH, CH.sub.2 Cl, CH.sub.2 Br, C.sub.2 H.sub.5.
Dependencies are inferred from the claim text.