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Title:
プラスチックレンズの製造方法
Document Type and Number:
Japanese Patent JP5150624
Kind Code:
B2
Abstract:
A process for producing a plastic lens which comprises preparing a prepolymer comprising sulfur by bringing at least one compound having epithio group, sulfur and a portion of a polythiol compound into reaction with each other and, thereafter, adding rest of the polythiol compound to the prepared prepolymer comprising sulfur and allowing polymerization to proceed. A plastic lens of excellent quality which exhibits excellent weatherability in combination with a great refractive index, a great Abbe number and excellent transparency is produced.

Inventors:
伊藤 伸介
上坂 昌久
Application Number:
JP2009512974A
Publication Date:
February 20, 2013
Filing Date:
April 25, 2008
Export Citation:
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Assignee:
HOYA株式会社
International Classes:
G02C7/00; C08G75/08; G02B1/04; G02C7/02
Domestic Patent References:
JP2007093862A2007-04-12
JP2005121679A2005-05-12
JP2005281527A2005-10-13
JP2001002783A2001-01-09
JP2004197005A2004-07-15
JP2007093862A2007-04-12
JP2005121679A2005-05-12
JP2005281527A2005-10-13
JP2001002783A2001-01-09
JP2004197005A2004-07-15
Attorney, Agent or Firm:
大谷 保
東平 正道
片岡 誠
平澤 賢一



 
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