Process for producing resin for optical material

Details Process for producing resin for optical material Process for producing resin for optical material

2007-10-09

2011-10-25

Gulakowski, Randy (Department: 1766)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C528S374000, C568S057000

Reexamination Certificate

active

08044165

ABSTRACT:
Disclosed is a process for producing effectively a high performance optical material (e.g. a lens) made of a polyurethane resin, which is transparent and colorless without a strain. In this process, the optical material is produced without causing striation or clouding by polymerizing a polymerizable composition comprising a polythiol compound and a polyiso(thio)cyanate compound, and characterized in that a water content in the composition is 10 to 300 ppm.

REFERENCES:
patent: 5087758 (1992-02-01), Kanemura et al.
patent: 5-117355 (1993-05-01), None
patent: 10-332901 (1998-12-01), None
patent: 2006-162926 (2006-06-01), None
patent: 2006162926 (2006-06-01), None
Form PCT/ISA/210 (international Search Report) dated Dec. 25, 2007.
Non-English version of Form PCT/ISA/237 (Written Opinion of the International Searching Authority) dated Dec. 25, 2007.
Observations by Third Parties from European Patent Office issued in Applicant's corresponding European Patent Application No. 07 829 397.4 (EP2 075 271) dated Jun. 8, 2010.
Notification of Transmittal of Translation of the International Preliminary Report on Patentability (Form PCT/IB/338), International Preliminary Report on Patentability (Form PCT/IB/373), Written Opinion of the International Search Authority (Form PCT/ISA/237) mailed in corresponding International Patent Application No. PCT/JP2007/069659, Apr. 30, 2009, The International Bureau of WIPO, Geneva, CH.

Affiliated with

Also associated with

Rating

Process for producing resin for optical material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing resin for optical material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing resin for optical material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4260773