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US 12,269,914 B2Granted
Polymerizable composition for optical materials and use thereof
AssigneeMitsui Chemicals, Inc.
InventorsYuuki Kasori, Shinsuke Ito
Life of this patent
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Abstract
A polymerizable composition for optical materials of the present invention contains (A) a polyisocyanate compound, (B) a polythiol compound, (C) a photochromic compound, (D) a polyether compound having a number-average molecular weight of 50 to 10,000, and (E) a polyether-modified siloxane compound having a viscosity of 1 mPa·s or more and less than 1,600 mPa·s.
Claims16
A polymerizable composition for optical materials, comprising:
- (A) a polyisocyanate compound;
- (B) a polythiol compound;
- (C) a photochromic compound;
- (D) a polyether compound having a number-average molecular weight of 50 to 10,000;
- and
- (E) a polyether-modified siloxane compound having a viscosity of 1 mPa·s or more and less than 1,600 mPa·s;
- wherein a ratio of a content of the polyether-modified siloxane compound (E) with respect to a content of the polyether compound (D) (E (parts by weight)/D (parts by weight)) is 0.01 to 1.0;
- wherein a ratio of the compound (D) with respect to 100% by weight of the polymerizable composition is 1.9 to 8.0% by weight;
- wherein a molar ratio of SH group in the polythiol compound (B) with respect to NCO group in the polyisocyanate compound (A) (SH group/NCO group) is 0.8 to 1.3;
- and
- wherein a ratio of the photochromic compound (C) with respect to 100 parts by weight of the polyether compound (D) is 1 to 10 parts by weight.
8 more elements
A method for manufacturing a polymerizable composition for optical materials, comprising:
- a step of mixing together a polyisocyanate compound (A), a photochromic compound (C), a polyether compound (D) having a number-average molecular weight of 50 to 10,000, and a polyether-modified siloxane compound (E) having a viscosity of 1 mPa·s or more and less than 1,600 mPa·s;
- and
- a step of mixing a mixed solution obtained by the above step with a polythiol compound (B);
- wherein a ratio of a content of the polyether-modified siloxane compound (E) with respect to a content of the polyether compound (D) (E (parts by weight)/D (parts by weight)) is 0.01 to 1.0;
- wherein a ratio of the compound (D) with respect to 100% by weight of the polymerizable composition is 1.9 to 8.0% by weight;
- wherein a molar ratio of SH group in the polythiol compound (B) with respect to NCO group in the polyisocyanate compound (A) (SH group/NCO group) is 0.8 to 1.3;
- and
- wherein a ratio of the photochromic compound (C) with respect to 100 parts by weight of the polyether compound (D) is 1 to 10 parts by weight.
5 more elements
Dependencies are inferred from the claim text.