JPH02269701A - Photopolymerization resin - Google Patents
Photopolymerization resinInfo
- Publication number
- JPH02269701A JPH02269701A JP9082189A JP9082189A JPH02269701A JP H02269701 A JPH02269701 A JP H02269701A JP 9082189 A JP9082189 A JP 9082189A JP 9082189 A JP9082189 A JP 9082189A JP H02269701 A JPH02269701 A JP H02269701A
- Authority
- JP
- Japan
- Prior art keywords
- monomer
- particles
- refractive index
- polymerization
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011347 resin Substances 0.000 title claims abstract description 19
- 229920005989 resin Polymers 0.000 title claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 25
- 239000000178 monomer Substances 0.000 claims abstract description 24
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 15
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000010436 fluorite Substances 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract 2
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001632 barium fluoride Inorganic materials 0.000 abstract 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Inorganic materials [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 abstract 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000016649 Copaifera officinalis Species 0.000 description 1
- 239000004859 Copal Substances 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、光重合樹脂の重合過程が迅速かつ、どの箇所
も均一に進行するための構成に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a structure that allows the polymerization process of a photopolymerized resin to proceed quickly and uniformly at all locations.
（従来の技術）
従来、第２図に示すように光重合樹脂１のモノマーに、
紫外線光源３より光りを照射して重合させることが行な
われており、この方法は、重合促進剤を用いる方法より
も重合速度が速く、特に接着を目的として多く用いられ
ている。(Prior art) Conventionally, as shown in FIG. 2, monomers of photopolymerized resin 1 were
Polymerization is carried out by irradiating light from an ultraviolet light source 3, and this method has a faster polymerization rate than a method using a polymerization accelerator, and is often used especially for the purpose of adhesion.
（発明が解決しようとする課題）
従来、光重合樹脂１のモノマーに光りを照射する場合、
第２図でに示すように、片側から照射する場合が多い。(Problem to be solved by the invention) Conventionally, when the monomer of the photopolymerized resin 1 is irradiated with light,
As shown in FIG. 2, irradiation is often performed from one side.
光りはモノマーに吸収されて重合を促進させるが、重合
が進むにつれて光りの透過率が低下し、光源３に近い表
層は光りが強いが、光源３から遠い深い部分では光りか
弱くなり１重合が十分行なわれないという不都合が生ず
る場合があった。Light is absorbed by the monomer and promotes polymerization, but as polymerization progresses, the transmittance of the light decreases.The light is strong in the surface layer near light source 3, but the light is weak in deep areas far from light source 3, and one polymerization is sufficient. There were cases where the inconvenience of not being carried out occurred.
（課題を解決するための手段）
本発明は前記課題を解決するためなされたもので、本発
明による光重合樹脂は、光の透過率の良い透明体で、し
かもモノマーの屈折率と重合が完了したポリマーの屈折
率の大略中間の値の屈折率を有する粒子を、あらかじめ
モノマーに混合し、拡散させておくようにしたものであ
る。(Means for Solving the Problems) The present invention has been made to solve the above problems, and the photopolymerized resin according to the present invention is a transparent body with good light transmittance, and the refractive index of the monomer and the polymerization are completed. Particles having a refractive index approximately intermediate in value to the refractive index of the polymer are mixed with the monomer in advance and allowed to diffuse.
（作用）
本発明によれば、モノマーに照射された光は、モノマー
に分散された透明粒子の中を通過するものもあるので、
モノマーの吸収が増加しても、吸収を受ける程度が少な
いので、深部まで達成する光が増加し、深部の重合も浅
部と同様均一に進行する。(Function) According to the present invention, some of the light irradiated to the monomer passes through the transparent particles dispersed in the monomer.
Even if the absorption of the monomer increases, the degree of absorption is small, so the amount of light reaching the deep part increases, and polymerization in the deep part progresses as uniformly as in the shallow part.
更に、透明粒子の屈折率はモノマーの屈折率とポリマー
の屈折率の中間の値に設定しであるので、透明粒子とモ
ノマーの境界で生ずる光の反射を低減できる特徴がある
。Furthermore, since the refractive index of the transparent particles is set to a value intermediate between the refractive index of the monomer and the refractive index of the polymer, it has the characteristic that reflection of light occurring at the boundary between the transparent particles and the monomer can be reduced.
（実施例）
第１図は本発明による一実施例を説明する模式図であっ
て、１はアクリル系の光重合樹脂、２は螢石（ＣａＦ２
）の粒子、３は紫外線光源、Ｌは光である。一般に光重
合に用いる光りは短波長領域が効率が良く、紫外線が多
く用いられている。(Example) FIG. 1 is a schematic diagram illustrating an example according to the present invention, in which 1 is an acrylic photopolymerized resin, 2 is a fluorite (CaF2
) particles, 3 is an ultraviolet light source, and L is light. Generally, the light used for photopolymerization is efficient in the short wavelength region, and ultraviolet rays are often used.
本発明では、紫外線領域で透過率の優れた材料として螢
石（Ｃａ Ｆ２）を用い、その透過領域は波長０．１Ｆ
ｍから１２Ｐｍである。In the present invention, fluorite (CaF2) is used as a material with excellent transmittance in the ultraviolet region, and its transmission region is at a wavelength of 0.1F.
m to 12Pm.
又、その屈折率は、光りの波長０．２２Ｂ＋で１．４８
１１０．０．３Ｂ＋で１．４５４０２．０．４＊ｗ＋で
１．４４１８５の値を有する。Also, its refractive index is 1.48 at the wavelength of light 0.22B+.
110.0.3B+ has a value of 1.45402.0.4*w+ and 1.44185.
使用する光の波長０．４Ｂ＋で、光重合樹脂のモノマー
の屈折率を１．４８と仮定すれば、ＣａＦ、の屈折率１
．４４であるから、ＣａＦ、と樹脂との境界面での反射
率は次のようになる。Assuming that the wavelength of the light used is 0.4B+ and the refractive index of the monomer of the photopolymerized resin is 1.48, the refractive index of CaF is 1.
．． 44, the reflectance at the interface between CaF and resin is as follows.
即ち、屈折率ｎｔｔ ｎ、の物質の境界面の反射率Ｒは
、良く知られているように
Ｒ＝（（ｎｔ ｎｚ）／ （ｎｚ＋ｎｚ））”で表さ
れる。That is, the reflectance R of the boundary surface of a substance with a refractive index ntt n is expressed as R=((nt nz)/(nz+nz))'', as is well known.
七ツマ−と螢石の境界面での反射率 Ｒｍ＝０．０２％ ポリマーと螢石の境界面での反射率 Ｒｐ＝０．０１９％となる。Reflectance at the interface between Nanatsuma and Fluorite Rm=0.02% Reflectance at the interface between polymer and fluorite Rp=0.019%.
比較のためにｎ＝１．５２の硝子の粒子を用いた場合は
モノマーと硝子の境界面での反射率
Ｒｍ＝０．１７％
ポリマーと硝子の境界面での反射率
Ｒｐ＝０．０２％
となり、特にモノマーの場合１反射率の減少が顕著であ
る。For comparison, when using glass particles with n=1.52, the reflectance at the monomer-glass interface Rm = 0.17% The reflectance at the polymer-glass interface Rp = 0.02% In particular, in the case of monomers, the decrease in 1 reflectance is remarkable.
以上のように、透明粒子２をモノマーに混合分散した場
合、境界面における光りの反射による損失が少ないこと
は、深部まで光りが進行する利点が得られる。As described above, when the transparent particles 2 are mixed and dispersed in a monomer, there is less loss due to reflection of light at the boundary surface, which has the advantage that the light travels deep.
実用的には、螢石の粒子の径が１０〜２０４ｍのものを
、容積比１０〜２０％混合２分散させ、重合用光りを０
．４〜Ｑ、３ｐｍの波長を使用することにより、深部ま
で十分重合させることができた。Practically, fluorite particles with a diameter of 10 to 204 m are mixed and dispersed at a volume ratio of 10 to 20%, and the light for polymerization is 0.
．． By using wavelengths of 4 to Q and 3 pm, it was possible to polymerize sufficiently deep.
又、螢石としては紫外線が当たっても、螢光を発しない
無螢光のものが望ましい場合もある。In some cases, it is desirable that the fluorite be non-fluorescent, which does not emit fluorescence even when exposed to ultraviolet light.
（発明の効果）
以上詳細に説明したように、本発明によれば、透明体の
粒子がモノマー中に存在するので、モノマー自体の吸収
が増加しても透明粒子中を通過する光は何等吸収を受け
ないので、深部まで到着することができるので、重合が
均一に行なわれる効果が得られる。(Effects of the Invention) As explained in detail above, according to the present invention, since transparent particles are present in the monomer, even if the absorption of the monomer itself increases, no light passing through the transparent particles is absorbed. Since the polymer is not exposed to water, it can reach deep parts, so that the effect of uniform polymerization can be obtained.
また、モノマーとことなる屈折率の粒子との境界におけ
る反射は、粒子の屈折率をモノマーとポリマーの屈折率
の中間の値の透明体を選択しであるので、実用的に差支
えない程度に減少することができる利点がある。In addition, reflection at the boundary between the monomer and particles with different refractive indexes is reduced to a level that does not cause any practical problems because the refractive index of the particles is selected to be a transparent material with a value intermediate between the refractive index of the monomer and the polymer. There are advantages to being able to do so.
また、付随的な効果として、光重合樹脂は重合による収
縮が大きいものであるが、透明粒子を混合することによ
り、収縮を減少できる利点もある。Furthermore, as an additional effect, although photopolymerized resins have a large shrinkage due to polymerization, mixing transparent particles has the advantage that shrinkage can be reduced.
尚、実施例では透明体粒子として螢石（ＣａＦ２）の粒
子を用いたが光重合樹脂の種類によっては、ＭｇＦ、、
ＬｔＦ、ＢａＦ、等の粒子を用いても同様の効果が得ら
れる。In the examples, particles of fluorite (CaF2) were used as transparent particles, but depending on the type of photopolymerized resin, MgF,...
Similar effects can be obtained by using particles such as LtF, BaF, etc.
第１図は本発明の一実施例を説明する模式図で、第２図
は従来例を示す説明図である。
１・・・・・・光重合樹脂
２・・・・・・透明体粒子
３・・・・・・光源
Ｌ・・・・・・光
特許出願人 コパル電子株式会社FIG. 1 is a schematic diagram illustrating an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a conventional example. 1...Photopolymerized resin 2...Transparent particles 3...Light source L...Light patent applicant Copal Electronics Co., Ltd.
Claims (2)
対して吸収が少なく、その屈折率がモノマーの屈折率と
ポリマーの屈折率の中間の値を有する透明体の粒子を混
合拡散してなる光重合樹脂。(1) Transparent particles that absorb little light for polymerization and whose refractive index is between the refractive index of the monomer and the refractive index of the polymer are mixed and diffused into the monomer of the photopolymerized resin as a filler. A photopolymerized resin.
０〜２０μｍの粒子を、容積比１０〜２０％混合拡散し
てなる請求項１記載の光重合樹脂。(2) As the transparent body, fluorite (CaF_2) has a particle size of 1
2. The photopolymerized resin according to claim 1, wherein particles having a diameter of 0 to 20 μm are mixed and diffused in a volume ratio of 10 to 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9082189A JPH02269701A (en) | 1989-04-12 | 1989-04-12 | Photopolymerization resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9082189A JPH02269701A (en) | 1989-04-12 | 1989-04-12 | Photopolymerization resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02269701A true JPH02269701A (en) | 1990-11-05 |
Family
ID=14009256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9082189A Pending JPH02269701A (en) | 1989-04-12 | 1989-04-12 | Photopolymerization resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02269701A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006093075A1 (en) * | 2005-02-28 | 2006-09-08 | Toagosei Co., Ltd. | Active energy ray-curable composition |
-
1989
- 1989-04-12 JP JP9082189A patent/JPH02269701A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006093075A1 (en) * | 2005-02-28 | 2006-09-08 | Toagosei Co., Ltd. | Active energy ray-curable composition |
| US7754781B2 (en) | 2005-02-28 | 2010-07-13 | Toagosei Co., Ltd. | Active energy beam-curable composition |
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