摘要:
This invention relates to (1) an optical resin composition comprising Component A: a thiourethane prepolymer compound prepared by reacting a polythiol compound having at least 3 functional groups and an intramolecular sulfide bond, with a polyisocyanate compound in a molar ratio of -SH to -NCO ranging from 3.0 to 7.0; Component B: at least one (meth)acrylate compound having at least 2 functional groups; and Component C: a compound radically polymerizable with Components A and B, in 10 to 50% by weight, 35 to 70% by weight, and 5 to 30% by weight, respectively; (2) a preparation process for an optical resin by photopolymerization; (3) an optical resin; and (4) a prepolymer suitable for Component A. A composition of this invention is a novel, rapidly polymerizable composition for an optical resin. Furthermore, a resin prepared by curing a composition of this invention not only has a high refractive index and a high Abbe number, but also is excellent in transparency and optical homogeneity.
摘要:
The present invention discloses a composition for high refractive index plastic lens consisting of a monomer mixture wherein a particular aliphatic thiol compound is added to a polyisocyanate represented by general formula (1) :
wherein each X represents a hydrogen atom or a methyl group ; each R represents a chlorine atom, a bromine atom, a methyl group or an ethyl group ; m represents an integer of 0-4 ; and n represents an integer of 2-4, and a polythiol of formula (2) :
and a high refractive index plastic lens made of a urethane-containing resin obtained by polymerizing said composition.
摘要:
A sulfur-containing O-(meth)acrylate compound of the following formula (1) is useful as a starting material for a resin composition used in optical applications such as a lens; wherein R represents hydrogen atom or methyl group; 1 represents an integer from 1 to 3; B is -CH〈, when B is -CH〈, n is 2; m is 1 or 2; A is selected from the following groups:
wherein m represents 1 or 2; each ring may be substituted by one or more alkyl, alkylthio or alkoxy groups having 1 or 2 carbon atoms; p and q are 0 or 1, while m is 1 when p is 1; when B is n is 1; m is 2 or 3; A is selected from the following groups:
-(CH 2 ) r -S-(CH 2 ) r -,
-(CH 2 ) r -S-S-(CH 2 ) r -,
-(CH 2 ) r -S-(CH 2 ) s -S-(CH 2 ) r -
and wherein r and s are an integer from 1 to 3; when B is n is 1; m is 2; A is selected from the following groups:
摘要:
The present invention discloses a composition for high refractive index plastic lens consisting of a monomer mixture wherein a particular aliphatic thiol compound is added to a polyisocyanate represented by general formula (1) :
wherein each X represents a hydrogen atom or a methyl group ; each R represents a chlorine atom, a bromine atom, a methyl group or an ethyl group ; m represents an integer of 0-4 ; and n represents an integer of 2-4, and a polythiol of formula (2) :
and a high refractive index plastic lens made of a urethane-containing resin obtained by polymerizing said composition.