US Patent 7785688 Optical disc and material for substrate thereof
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Patent abstract
An optical disc 10 includes a substrate. The substrate is formed by mixing polymethyl methacrylate and a polylactic acid-based resin composition. The polylactic acid-based resin composition contains polylactic acid-based resin in which the content of lactide is reduced to 1,000 ppm or less, and a mold release agent of 0.16 to 0.32 phr. The weight ratio of the polylactic acid-based resin to the polymethyl methacrylate is 70:30 to 50:50.
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US Patent 07785688 Optical disc and material for substrate thereof US Patent 7785688 Optical disc and material for substrate thereof
Infobox
Patent Number
0778568800
Patent Number
778568800
Edits on 27 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
077856880
Date of Patent
August 31, 2010
0Patent Application Number
112872490
Date Filed
November 28, 2005
0Official Website
Patent Primary Examiner
Edits on 23 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
077856880
Date of Patent
August 31, 2010
0Patent Application Number
112872490
Date Filed
November 28, 2005
0Official Website
Patent Primary Examiner
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US Patent 07785688 Optical disc and material for substrate thereof
Infobox
Is a
Patent jurisdiction
Patent number
07785688
Date of patent
August 31, 2010
Patent application number
11287249
Date Filed
November 28, 2005
Patent primary examiner
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