公开(公告)号：US3907063A

公开(公告)日：1975-09-23

申请号：US48915674

申请日：1974-07-17

Applicant: ASAHI DENKA KOGYO KK

Inventor： NAKAZAWA MASAHIKO ,  NAKAMURA SHIZUO ,  NAKAYAMA MUTUMI

IPC: D21H21/34 ,  H04R7/02 ,  G10K13/00 ,  H04R7/00

CPC classification number: H04R7/02

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.

Abstract translation: 通过添加（1）分子量为500〜40,000，氯含量为40〜75重量％的氯化聚烯烃，或（1）含溴的含氯氯化聚烯烃，制备扬声器锥体用的不易燃纸 分子量为500〜40,000，氯含量为10〜30重量％，溴含量为60〜80重量％，（2）三氧化锑成纸纸浆。 由此产生的用于扬声器锥的纸具有良好的不易燃性能，而不会失去良好的声音再现特性，因为它具有降低的吸湿性和增加的金属保护性能。

公开(公告)号：US3859367A

公开(公告)日：1975-01-07

申请号：US21556472

申请日：1972-01-05

Applicant: ASAHI DENKA KOGYO KK

Inventor： YAMAMOTO HIROAKI ,  HARADA HIDEO ,  MIYAOKA HIROSHI ,  TANAKA MINORU ,  KUBOTA OSAMU ,  NAKAMURA SHIZUO ,  NAKAMURA YASUSI

IPC: B01J10/00 ,  B01J19/24 ,  C07C29/66 ,  C07C31/34

CPC classification number: C07C29/66 ,  B01J19/2425 ,  B01J2219/00094 ,  C07C31/36

Abstract: Glycerol dichlorohydrin is prepared by dissolving allyl chloride vapor in an upwardly flowing aqueous stream, dissolving chlorine gas in a separate second upwardly flowing aqueous stream to form a hypochlorous acid solution, mixing the two streams and flowing them downwardly in a reaction column where they react to form glycerol dichlorohydrin.