C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
31/154, 400/5725
C08K 7/20 (2006.01) C04B 26/02 (2006.01) C08K 3/40 (2006.01) C09K 3/00 (2006.01) G10K 11/16 (2006.01)
Patent
CA 1073195
ABSTRACT OF THE DISCLOSURE The present invention provides a light transmissible, high density elastic sound barrier composition having a specific gravity of greater than 1.8 which comprises: 100 wt. parts of a thermoplastic resin selected from the group consisting of poly- vinyl chloride, vinyl chloride-vinyl acetate copolymer, poly- vinylidene chloride, polyethylene, polypropylene, polyvinyl acetate, ethylene-vinyl acetate copolymer, polyester and poly- urethane or a mixture of the thermoplastic resin and a plasticizer and 100 to 500 wt. parts of spherical lead glass having an aver- age diameter of 40 to 120 µm and a refractive index ND of 1.5- 2.2.
237703
Hiratsuka Kenji
Nakamura Nobuo
Noda Haruhisa
Sakashita Kazumi
Umezu Yutaka
Dai Nippon Toryo Co.
Na
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