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Photo-curable polysiloxane polyurethane (methyl) acrylate composition, adhesive and cured product

A polysiloxane polyurethane, acrylate technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of easy peeling, high volume shrinkage, and achieve the best penetration, The effect of resistance to strong light exposure is not easy

Active Publication Date: 2014-07-23
DAXIN MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the radiation curable composition can form a cured product with a tensile breaking length of 1200%, however, the radiation curable composition has the problem of excessive volume shrinkage, so that the cured product formed by it, after thermal shock Easy to have the problem of peeling

Method used

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  • Photo-curable polysiloxane polyurethane (methyl) acrylate composition, adhesive and cured product
  • Photo-curable polysiloxane polyurethane (methyl) acrylate composition, adhesive and cured product
  • Photo-curable polysiloxane polyurethane (methyl) acrylate composition, adhesive and cured product

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0070] [Synthesis Example 1] Synthesis of polysiloxane urethane (meth)acrylate (A1)

[0071] Place 11.11 grams (0.05 moles) of IPDI, 40 grams (0.04 moles) of X-22-160AS, 9.2 grams of lauryl acrylate and 0.05 grams of DBTDL in a 600-milliliter round-bottomed bottle, and continue at 40°C under a nitrogen atmosphere. Stir the reaction for 1.5 hours, then add 0.03 grams of MEHQ and 1.17 grams (0.0101 moles) of β-hydroxyethyl methacrylate, and react at 65 ° C for 4 hours to obtain polysiloxane polyurethane methacrylate , the viscosity is 25441mpas, and the weight average molecular weight is 20001.

[0072] [Synthesis Examples 2 to 3]

[0073] The polysiloxane urethane (meth)acrylates of Synthesis Example 2 and Synthesis Example 3 were prepared in the same manner as in Synthesis Example 1, wherein the types and amounts of each component are shown in Table 1.

Embodiment 1

[0074] [Example 1] Preparation of photocurable polysiloxane polyurethane (meth)acrylate composition

[0075] Stir and mix 81 grams of polysiloxane urethane methacrylate of Synthesis Example 1, 17.9 grams of lauryl acrylate, 0.4 grams of I819 and 0.7 grams of TMMP at 25° C. After machine defoaming, the photocurable polysiloxane polyurethane (meth)acrylate composition can be obtained. Various property tests were carried out, and the test results are shown in Table 2.

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PUM

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Abstract

A photo-curable polysiloxane polyurethane (methyl) acrylate composition comprises polysiloxane polyurethane (methyl) acrylate, a compound containing ethylenic-bond unsaturated functional groups, a photoinitiator and a thiol compound. The polysiloxane polyurethane (methyl) acrylate comprises polymerization products obtained by polymerization reaction of reactants, the reactants of the weight-average molecular weight of less than 5000 have polysiloxane polymers having dyhydroxy, diisocyanate compounds and (methyl) acrylate compounds having hydroxyl. The mole ratio of diisocyanate compounds to the (methyl) acrylate compounds having hydroxyl is from 1.05 to 1.45. The cured product formed by the composition has a tensile failure length of more than 680% and a volume shrinkage of less than 1.95%.

Description

technical field [0001] The present invention relates to a photocurable adhesive composition, in particular to a photocurable polysiloxane polyurethane (meth)acrylate containing the photocurable polysiloxane polyurethane (meth)acrylate and a thiol compound. ) acrylate composition. Background technique [0002] At present, in display devices, the transparent cover lens made of glass, acrylic resin plate, polycarbonate plate (polycarbonate plate) and other materials are attached to the touch panel, or the touch panel and the display element are pasted by adhesive bonding. agent. Adhesives can generally be divided into heat-curable adhesives and light-curable adhesives. Among them, light-curable adhesives require less curing time than heat-curable adhesives, and are suitable for use in production lines. [0003] US Patent No. 6265476 discloses a radiation-curable composition. In the specific example of its description, it is stated that the radiation curable composition compr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C08G18/67C08G18/61
Inventor 钟显政李宛谕
Owner DAXIN MATERIALS
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