Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1996-12-31
1998-06-16
Henderson, Christopher
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526212, 526223, 526224, C08F 202
Patent
active
057672121
ABSTRACT:
The present invention relates to a method of producing a sulfur-containing transparent polymer by polymerizing a composition containing a (metha)acrylate monomer having sulfur in its molecule, characterized by radical polymerization of a composition containing at least one compound selected from radical chain transfer compounds and radical trapping compounds in an amount of 0.1 to 7.0% by weight of the total amount of the composition. The polymer obtained by polymerization is less colored. The method can provide a polymer having a high total light transmittance, a high refractive index and a light weight and is hardly yellowed during use.
REFERENCES:
patent: 5011897 (1991-04-01), Amano
patent: 5214116 (1993-05-01), Matsuoka
patent: 5294690 (1994-03-01), Iguchi
patent: 5349035 (1994-09-01), Brand
Baba Setsuo
Iguchi Yuichiro
Oka Koichiro
Henderson Christopher
Toray Industries Inc.
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