| abstract |
A non-flammable paper for speaker cones is prepared by adding (1) chlorinated polyolefin having a molecular weight of from 500 to 40,000 and a chlorine content of from 40 to 75 weight percent, or (1)'' bromine-containing chlorinated polyolefin having a molecular weight of from 500 to 40,000, a chlorine content of from 10 to 30 percent by weight and a bromine content of from 60 to 80 percent by weight and (2) antimony trioxide into paper pulp. The paper for speaker cones thereby produced has a good non-flammable property, without losing good sound-reproducing characteristics because it has reduced hygroscopicity and increased metal protecting properties. |