SU980058A1 - Liquid photopolymerisable composition for manufacturing printing plates - Google Patents

Description

Triethylene glycol dimethacrylate5, 0-15,0

Methyl ester

benzoin 0.5-1.5

rf, uJ-methacryl- (bisethylene glycol sulfite Else

As a photopolymerizable compound, it may additionally contain d, o-methacryl-di- (diethylene glycol -phthalate, with a ratio of photopolymerizable components,; Correspondingly, 1: 3-3: 1.

Example 1. Prepare a composition of the following composition, wt.% Methyl ether

benzoin0,5

Triethylene glycol dimethacrylate (TGM-W) 5.0

o, and) -Metacryl- (bisethylene glycol) -sulfite Else

. (94.5)

After thorough mixing and de-bubbling, the mixture is poured into the cavity of the mold-copying frame formed by two glasses, thickness and spreading limiters, the negative is glued to the inner side of one of the glasses, the composition is exposed on both sides to form the base and the printing elements on it. Exposure is carried out with LUF-80 fluorescent lamps at a distance of 50 µm for 40 seconds to form the base and for 300 liters to form the printing elements. The composition is not polymerized in the gaps, the frame is removed, and the photopolymer forms are cleared by dissolving the gaps in the composition. tap water.

Example 2. A photopolymerizable composition of the following composition is prepared, wt%:

Methyl ester

benzoin1,0

Triethylene glycol dimethacrylate

(TGM-Z) 10.0

ot, to-not so ryl- (bisethylene glycol) sulfite 89.9

Further, as in Example 1, only the exposure time of the composition is 35 seconds to form the core and 365 seconds to form the printing elements.

Example 3. A photopolymerizable composition of the following composition is prepared, wt%:

Methyl ester

benzoin 1,5

Triethylene glycol dimethacrylate (TGM-Z) 15.0

C -, (x1-methacryl- (bisethylene glycol; sulfite 83.5

Further, as in Example 1, only the exposure time of the composition 45 to form the substrate and 400 with d51 form the printing elements.

PRI m and p 4. Prepare a composition of the following composition, wt.%

Methyl ester

benzoin 1.0

Triethylenegly-

cold methacrylate. {TGM-3) 10.0.

oi, w-methacryl-di- (diethylene glycol) -phthalate

(MDF-2) in the ratio 1: 3 89.9

Further, as in Example 1, only the exposure time of the composition 100 to form the substrate and 615 s to form the printing elements.

Example 5. Prepare the composition following composition, wt.% Methyl ester of benzoin 1.0

Tristilyl glycol dimethacrylate (MGM-3) 10.0 Ы, Ы-Methacryl- (bisethyleneglycol-oi sulphite, and -methacryl-di- (diethylene-glycol) -phthalate (MDF-2) in the ratio 1: 1 89.9 Further, as in example 1, only

the exposure time of the composition 75 to form the base and 520 s to form the printing elements.

Example 6. A composition of the following composition is prepared, wt.% Benzoin methyl ester 1.0 Triethylene glycol dimethacrylate (MGM-3) 10.0 o6, w-methacryl- (bisethylene glycol) sulfite, N-methacryl-di- {diethylene glycol) -phthalate ratio of 3: 1 89.9 Further, as in example 1, only

the expiration time of the composition 60 to form the base and 440 s to form the printing elements.

The resulting photopolymer printed forms (FPP) on the axis of the proposed compositions have the technological characteristics shown in the table, the solvent for cleaning the FPP samples is water.

40 35 50 100

380 365 400 615

75 60 180

520 440 900

120

810

As can be seen from the above data, photopolymer printing plates obtained when using the composition of eC as the main component, “g methacrylate- (bisethylene glycol) sulfite.

or its mixture with оС, «-metacry 1-dig (bis- in ethylene glycol) -phthalate: (MDF-2), have high photosensitivity (1.5-2 times, higher (3 times)) strength characteristics while ensuring high performance .65;

More than 150 Less than 40 27.44-1о

28.53-10

- -

". - 28.40-10 30.38-10

- -.

44.3-10

eleven

-. - 32,2.4-10

150 407.84-10 150

12.45.

72 150

40

quality. Printed spaces of you: water pipes with water, which simplifies the technological process of mold making.

Claims (2)

1. Liquid photopolymerizable composition for izrotovleniya printed forms containing photopolymerizing g with the compound triethylene glycol dime. acrylate and benzoin methyls, characterized in that, in order to increase the photosensitivity of the composition and the quality of printing forms, it contains as a photopolymerized compound ot, acryl- (bisethylene glycol-sulfite at the following ratio of components, May.%: Triethylene gly5, 0-15.0 0.5-1.5 Rest 2. The composition according to claim 1, characterized in that, as a photopolymerizable compound, it additionally contains with, 1-methacryl-di- (diethylene glycol -phthalate, with a ratio of photopolymerizable cix to components equal to 1: 3-3: 1. Sources of information (taken into account during the examination 1. USSR author's certificate 255773, class, G 03 C 1/74, 1968., 2. USSR author's certificate 15-1. 763838, cl. G 03 C 1/68, 1973 (prototype).