Elastic-thermoplastic graft polymers with improved properties
AssigneeBayer Aktiengesellschaft
InventorsHerbert Eichenauer, Martin Bohnenpoll, Adolf Schmidt, Heinrich Alberts
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Abstract
Elastic-thermoplastic graft polymers manufactured by radical emulsion polymerisation of resin-forming vinyl monomers in the presence of rubber present in latex form with the use of a combination of a peroxide of formula (I) ##STR1## where R.sup.1 signifies alkyl, cycloalkyl and aryl groups with 4 to 20 carbon atoms, X the groups --COOH and --SO.sub.3 H as well as their alkali, alkaline-earth or ammonium salts, n an integer in the range from 1 to 6, A alkylene, cycloalkylene and arylene groups with 6 to 40 carbon atoms and a reducing agent as initiator system, a method for their manufacture and their use as moulding compositions.
Claims11
Elastic-thermoplastic graft polymers manufactured by radical emulsion polymerisation of resin-forming vinyl monomers in the presence of rubber present in latex form with the use of a combination of a peroxide of formula (I) ##STR5## where is an alkyl, cycloalkyl or aryl group with 4 to 20 carbon atoms,
- X is a --COOH group or a --SO.sub.3 H group or their alkali, alkaline-earth or ammonium salts,
- n is an integer in the range from 1 to 6,
- A is an alkylene, cycloalkylene or arylene group with 6 to 40 carbon atoms
- and a reducing agent as initiator system, wherein said reducing agent is a compound selected from the group consisting of salts of sulphinic acids, salts of sulphurous acid, sodium dithionite, sodium sulphite, sodium hyposulphite, sodiumhydrogen sulphite, ascorbic acid and its salts, sodium formaldehyde sulphoxate, mono- and dihydroxyacetone, sugar, iron(II) salts, tin(II) salts and titanium(III) salts.
Dependencies are inferred from the claim text.