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Releasing agent composition and releasing material

A technology of composition and peeling agent, applied in the directions of adhesives, chemical instruments and methods, film/sheet-like adhesives, etc., can solve the problems of inability to peel, low production efficiency of synthetic leather, reduced peeling ability, etc., and achieve surface state Excellent, excellent peelability, the effect of maintaining peelability

Active Publication Date: 2011-01-19
株式会社力森诺科 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, as the production of synthetic leather is repeated, the release ability of the release paper coated with the resin composition for release paper in the process described in Patent Document 5 gradually decreases, and finally becomes impossible to peel, so there is a problem that the production efficiency of synthetic leather is low.

Method used

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  • Releasing agent composition and releasing material
  • Releasing agent composition and releasing material
  • Releasing agent composition and releasing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0097] The effects of the present invention will be described using the following examples and comparative examples. However, the technical scope of the present invention is not limited to the following examples.

[0098] In the following Examples and Comparative Examples, first, hydroxyl-containing acrylic resins having different hydroxyl values, glass transition temperatures, and weight-average molecular weights were synthesized. Then, using the synthesized hydroxy acrylic resin, release agent compositions having different compositional ratios of hydroxyl group-containing acrylic resin, amino resin, silicone resin, and alkyd resin were prepared. Further, a release material was produced using the release agent composition, and the performance evaluation of the release material was performed on glossiness, surface condition, initial release ability, durability for repeated use, and resistance to dimethylformamide.

[0099] (Synthesis of Acrylic Resin)

Synthetic example 1

[0101] 600 parts by mass of butyl acetate was charged into a reaction container equipped with a stirrer and a cooling pipe, and heated and stirred while blowing in nitrogen gas, and kept at 100°C. Next, add 150 mass parts n-butyl acrylate, 250 mass parts 2-hydroxyethyl methacrylate, 100 mass parts methyl methacrylate, 500 mass parts styrene and azobisisobutyronitrile to another container, mix homogeneous, thus making a monomer-catalyst mixed solution. This monomer-catalyst mixed solution was added dropwise to the above-mentioned reaction vessel at a uniform rate over 2 hours. After maintaining the temperature for 3 hours, the heating residue (JIS K5407) was measured to confirm that the degree of polymerization was 100%. Then, 400 parts by mass of butyl acetate was added and diluted to obtain an acrylic resin (A) having a resin concentration of 50%. The hydroxyl value of the acrylic resin is 105 mgKOH / g (converted to 100% of the resin component), the glass transition temperat...

Synthetic example 2

[0103]The mixing ratio of the monomers in the monomer-catalyst mixed solution is set as 250 parts by mass of n-butyl acrylate, 160 parts by mass of 2-hydroxyethyl methacrylate, 230 parts by mass of methyl methacrylate, 350 parts by mass of benzene An acrylic resin (B) was obtained by performing solution polymerization in the same manner as in Synthesis Example 1 above except for ethylene and 10 parts by mass of methacrylic acid. The acrylic resin (B) had a hydroxyl value of 69 mgKOH / g, a glass transition temperature of 40° C., and a weight average molecular weight of 49,000.

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Abstract

Disclosed is a releasing agent composition having excellent gloss, releasing power and surface state, which can maintain excellent releasability even after repeated use. The releasing agent composition contains a hydroxy group-containing acrylic resin having a specific structure, an amino resin, and a silicone resin having a functional group which can be chemically bonded to at least one of the hydroxy group-containing acrylic resin and the amino resin. The hydroxy group-containing acrylic resin has a hydroxyl number of 10-150 mgKOH / g, a glass transition temperature of 20-100 DEG C and a weight average molecular weight of 20,000-100,000.

Description

technical field [0001] The present invention relates to a release agent composition and a release material obtained by using the release agent composition. In particular, it relates to a release agent composition excellent in releasability under high temperature conditions, gloss, surface state, and repeated use durability, and a release material using the release agent composition. Background technique [0002] The release material is used to form the surface of the synthetic leather in the manufacture of the synthetic leather. The manufacture of synthetic leather generally consists of the following series of steps. First, a one-component polyurethane resin is applied to a release material (it is also called a process release paper when used in the production of synthetic leather), followed by heat drying. The surface of the one-component polyurethane resin film formed here is coated with a two-component polyurethane resin as a binder, bonded to the base fabric, and aged....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/14C08L33/14C08L61/20C08L83/04C09D161/20C09D183/04C09J7/02C09K3/00
CPCC08F212/08C08L61/20C08F2220/281C08F2220/1825C09J2433/005C08L2205/03C08F220/18C08L83/04C08F220/28C08L33/066C09D133/066C08F220/14C09J7/0228C09J7/401C08F220/281C08F220/1804C08F220/20C08L2666/02
Inventor 小泉文夫藤田博之佐佐木靖
Owner 株式会社力森诺科
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