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CN-121108414-B - Raw material composition for preparing medium-high refractive index polyurethane optical material

CN121108414BCN 121108414 BCN121108414 BCN 121108414BCN-121108414-B

Abstract

A raw material composition for preparing a medium-high refractive index polyurethane optical material and an optical coating material comprises an A-component polyisocyanate, a B-component cyclotrimerized thio-tris (2-mercaptoethylthio) thiol shown in a formula I and a C-component naphthyl-bis (thioethyl acrylate) shown in a formula II. The composition is used for preparing polyurethane optical materials or optical coatings, and the product has the advantages of high light transmittance, medium and high refractive index, excellent mechanical property, protection against harmful light and the like, and can effectively regulate and control the refractive index, reduce the production cost of high-refraction and high-precision optical components and expand the application range of the optical materials. (I) (II)。

Inventors

  • WANG MINGHUA
  • JI LIJUN
  • TAO SONGYUAN
  • MIAO WANG
  • ZHENG YONGHUA
  • HAN MENGXUAN
  • ZHANG YUXIN
  • WU XIAO
  • Min Haiyu

Assignees

  • 江苏视科新材料股份有限公司

Dates

Publication Date
20260512
Application Date
20251112

Claims (10)

  1. 1. A raw material composition for preparing a medium-high refractive index polyurethane optical material, characterized in that the composition comprises the following components: the component A comprises 35-50 parts by weight of polyisocyanate; 30-45 parts by weight of cyclotrimerized sulfur-tri (2-mercaptoethylthio) mercaptan shown in formula I; 5-15 parts by weight of naphthyl-bis (thioethyl acrylate) shown in the formula II; (I) (II) 。
  2. 2. The feedstock composition as recited in claim 1, wherein the components further comprise: and 0.3-2 parts by weight of a light absorber.
  3. 3. The feedstock composition according to claim 2, wherein the light absorber is a combination of an ultraviolet absorber and a blue light absorber; The ultraviolet light absorber is selected from the group consisting of phenyl o-hydroxybenzoate, o-nitroaniline, 2- (2 ' hydroxy-3 ',5' -di-tert-phenyl) -5-chlorinated benzotriazole ‬,2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, resorcinol monobenzoate, 4-benzoyloxy-2, 6-tetramethylpiperidine, hexamethylphosphoric triamide, UV-234, UV-326, UV-327, UV-328, UV-329, UV-360, UV-531 and UV-928; The blue light absorber is at least one selected from octaethylporphine zinc, octaethylporphine nickel, 5,10,15, 20-tetra (pentafluorophenyl) porphine zinc, tetraphenylporphine zinc, quinophthalone containing hydrogen bond and N-vinyl-5-vinyl uracil.
  4. 4. The raw material composition according to claim 3, wherein the weight ratio of the ultraviolet absorber to the blue light absorber is 1 (0.3-2.5).
  5. 5. The feedstock composition according to any one of claims 1 to 4, wherein the polyisocyanate is selected from at least one of diphenylmethane diisocyanate, hexamethylene diisocyanate, toluene-2, 4-diisocyanate, m-xylylene isocyanate, isophorone diisocyanate, diphenyl ether diisocyanate, dicyclohexylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, cyclohexane diisocyanate, dithiodiethyl diisocyanate, tetramethylene diisocyanate, thiodihexyl diisocyanate, thiodipropyl diisocyanate, dithiodipropyl diisocyanate, triphenylmethane triisocyanate, xylylene diisocyanate, lysine triisocyanate and o-tolidine diisocyanate.
  6. 6. A raw material composition for preparing a medium-high refractive index polyurethane optical coating material, characterized in that the composition comprises the following components: 40-50 parts by weight of polyisocyanate; The component b is 35-45 parts by weight of cyclotrimerized sulfur-tri (2-mercaptoethylthio) mercaptan shown in the formula I; 5-9 parts by weight of naphthyl-bis (thioethyl acrylate) shown in the formula II; component d, active diluent or wetting dispersant, 0.8-1.5 parts by weight (I) (II) 。
  7. 7. The feed composition of claim 6, wherein the reactive diluent is at least one of benzyl acrylate, ethoxyphenol acrylate, biphenylmethanol acrylate, ortho-phenylphenoxyethyl acrylate, 1, 6-hexanediol diacrylate, pentaerythritol triacrylate, or trimethylolpropane triacrylate; the wetting dispersant is BYK acrylate wetting dispersant or F420 type wetting dispersant.
  8. 8. The feedstock composition as recited in claim 6 wherein the components further comprise: and 0.3-2 parts by weight of a light absorber.
  9. 9. The feedstock composition according to claim 8, wherein the light absorber is a combination of an ultraviolet absorber and a blue light absorber; The ultraviolet light absorber is selected from the group consisting of phenyl o-hydroxybenzoate, o-nitroaniline, 2- (2 ' -hydroxy-3 ',5' -di-tert-phenyl) -5-chlorobenzotriazole, 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, resorcinol monobenzoate, 4-benzoyloxy-2, 6-tetramethylpiperidine, hexamethylphosphoric triamide, UV-234, UV-326, UV-327, UV-328, UV-329, UV-360, UV-531 and UV-928; The blue light absorber is at least one selected from octaethylporphine zinc, octaethylporphine nickel, 5,10,15, 20-tetra (pentafluorophenyl) porphine zinc, tetraphenylporphine zinc, dihydroxyquinophthalone and N-vinyl-5-vinyl uracil; The weight ratio of the ultraviolet absorber to the blue light absorber is 1 (0.3-2.5).
  10. 10. The feedstock composition according to any of claims 6 to 9, wherein the polyisocyanate is selected from at least one of diphenylmethane diisocyanate, hexamethylene diisocyanate, toluene-2, 4-diisocyanate, m-xylylene isocyanate, isophorone diisocyanate, diphenyl ether diisocyanate, dicyclohexylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, cyclohexane diisocyanate, dithiodiethyl diisocyanate, tetramethylene diisocyanate, thiodihexyl diisocyanate, thiodipropyl diisocyanate, dithiodipropyl diisocyanate, triphenylmethane triisocyanate, xylylene diisocyanate, lysine triisocyanate and o-tolidine diisocyanate.

Description

Raw material composition for preparing medium-high refractive index polyurethane optical material Technical Field The invention belongs to the technical field of optical materials, and particularly relates to a raw material composition for preparing a medium-high refractive index polyurethane optical material and an optical coating material, and a preparation method and application thereof. Background In the field of optical materials, ultrahigh refractive optical resins and medium-high refractive optical resins are each distinguished. The ultra-high refractive index optical resin has outstanding performances in light weight and precision of the lens by virtue of the excellent refractive performance, can obviously reduce the thickness of the lens while guaranteeing the optical performance, improves the wearing comfort, and is particularly suitable for manufacturing high-power lenses. However, from a practical application point of view, the medium-high refractive index optical resin exhibits a stronger market competitiveness. For example, acrylic acid ester is polymerized to form an acrylic lens, and for example, a medium-high refraction polyurethane lens formed by polymerizing polyisocyanate and mercaptan compounds is used for far-ultra-high refraction products, has obvious advantages in cost control, has higher cost performance, can meet the requirements of mass consumer markets, and is dominant. In addition, the production process of the medium-high refractive index resin is more mature, the supply chain is more stable, and the factors together promote the medium-high refractive index resin to become the main choice of the current optical lens market, so that the medium-low degree correction resin has an irreplaceable position in the field of medium-low degree correction. On the other hand, conventionally, there has been always a bad influence caused by exposure of eyes to ultraviolet rays having a wavelength of 380 to 385 nm. In recent years, blue light having a wavelength of about 385 to 445nm contained in natural light or light emitted from a liquid crystal display of office equipment, a screen of a portable device such as a smart phone, or the like causes fatigue or pain to eyes, and the influence on eyes becomes a problem, and it is desired to reduce the amount of blue light from ultraviolet to 445nm or less exposed to eyes. In view of this, there is a strong need to improve the materials and processes of medium-high refractive optical materials to achieve high quality, high efficiency and economical technical effects, so as to meet the upgrade requirements of the optical material industry. Disclosure of Invention The invention aims to provide a medium-high refractive index polyurethane optical material and a raw material composition of an optical coating material, wherein the two compositions contain a cyclotrimerized sulfur-tris (2-mercaptoethylthio) thiol compound with an ultrahigh refractive index shown in a formula I and a naphthyl-bis (thioethylacrylate) compound with a medium-high refractive index shown in a formula II, the refractive indexes of the cyclotrimerized sulfur-tris (2-mercaptoethylthio) thiol compound are regulated and controlled on the premise of ensuring basic optical performance and mechanical performance by compounding the compounds with different refractive indexes, and meanwhile, harmful ultraviolet rays and blue light can be effectively protected by adding a light absorber, so that the cyclotrimerized sulfur-tris (2-mercaptoethylthio) thiol compound is used for casting or surface coating of a precision optical lens. In order to achieve the above purpose, the present invention provides the following technical solutions: a raw material composition for preparing a medium-high refractive index polyurethane optical material, the composition comprising the following components: the component A comprises 35-50 parts by weight of polyisocyanate; 30-45 parts by weight of cyclotrimerized sulfur-tri (2-mercaptoethylthio) mercaptan shown in formula I; 5-15 parts by weight of naphthyl-bis (thioethyl acrylate) shown in the formula II; (I) (II) 。 the raw material composition for preparing the medium-high refractive index polyurethane optical material as described above, preferably, the components further include: and 0.3-2 parts by weight of a light absorber. The raw material composition for preparing the medium-high refractive index polyurethane optical material is preferably prepared by compounding an ultraviolet absorbent and a blue light absorbent; More preferably, the ultraviolet light absorber is selected from the group consisting of phenyl o-hydroxybenzoate, o-nitroaniline, 2- (2 ' hydroxy-3 ',5' -di-tert-phenyl) -5-chlorobenzotriazole, 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, resorcinol monobenzoate, 4-benzoyloxy-2, 6-tetramethylpiperidine, hexamethylphosphoric triamide, UV-234, UV-326, UV-327, UV-328, UV-329, UV-360, UV-531 and