Hardcoat compositions

A technology of composition and hard coating, which is applied in the direction of coating, instrument, photoplate process of patterned surface, etc., can solve the problem of limited release characteristics, and achieve low peeling force, good release characteristics, and high oil contact angle Effect

Inactive Publication Date: 2014-06-25
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, many of these protective overcoats have limited release characteristics, so even when additional slip agents are used, they can still stick to the photoresist surface, especially in the presence of viscous photoresists such as high viscosity solder mask inks. When resist material

Method used

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Examples

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preparation example Construction

[0076] The preparation of most of the above epoxy-terminated silane compounds is described in US Patent No. 3,131,161.

[0077] Other useful epoxy-terminated silanes are epoxy-terminated silanes represented by the formula:

[0078]

[0079] in

[0080] m is 1 to 6 (preferably 1 to 4),

[0081] n is 0 or 1 (preferably 1),

[0082] p is 1 to 6 (preferably 1 to 4), and

[0083] R 1 is H or an alkyl group of 1 to 10 carbon atoms (preferably an alkyl group of 1 to 4 carbon atoms).

[0084] In addition to any of the aforementioned epoxysilanes, partially hydrolyzed or condensed epoxysilanes which are further curable upon exposure to light in the presence of a photoacid generator may also be used in the present invention, alone or in combination with unhydrolyzed epoxysilanes. These partial hydrolysates can be obtained by silane OR 1 Formed by partial hydrolysis of the group. Thus, the term "precondensate" includes siloxanes in which some or all of the silicon atoms are bon...

example

[0317] Objects and advantages of this invention are further illustrated by the following examples, but the particular materials and amounts thereof recited in these examples, as well as other conditions and details, should not be construed to unduly limit this invention.

[0318] Material

[0319] Materials used in the examples are shown in Table 1.

[0320]

[0321]

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Abstract

A hardcoat composition comprises (a) an epoxy silane compound, (b) a reactive silicone additive and (c) photo-acid generator. The reactive silicone additive has one of the following general structures:formula (I) or X-SiR1R2-(O-SiR1R2)n-X (Formula 2) wherein: R1, R2, and R3 are independently a C1-C6 alkyl group or aromatic group with or without substitution; X is a curable group selected from -OH, -OR, -OC(0)R, -OSiY^Y3, -CHzCHrL-SiYVY3, and -C(O)(R)3, wherein: L is a divalent linkage group; Y1, Y2, and Y3 are independently selected from a C1-C6 alkyl group, and a curable group selected from -OH, -OC(O)R, and -OR, with the proviso that at least one of Y1, Y2, and Y3 is a curable group; R is a C1-C4 alkyl group; and n is at least 2 and m is at least 1, provided that the weight average molecular weight (Mw) of the reactive silicone additive is no more than 4200.

Description

[0001] Cross references to related patent applications [0002] This patent application claims priority to US Provisional Patent Application Serial No. 61 / 549,138, filed October 19, 2011. technical field [0003] The present invention relates to hardcoat compositions which can be used, for example, as protective layers for phototools. Background technique [0004] In the printed circuit industry, a photomask or stencil with a circuit pattern is called a negative. Photoresists can provide intricate images representing electrical circuits through such stencils through which they are exposed to light, such as ultraviolet (UV) light. The image is usually composed of many thin lines and connections that are closely spaced together. During the manufacture of printed circuit boards therefrom, a negative is placed face down on a photoresist layer, and then contact printing is achieved by exposing the photoresist to light through the negative. The negative must then be separated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/16C09D183/06
CPCC08G77/16C09D183/06G03F1/00
Inventor 裘再明
Owner 3M INNOVATIVE PROPERTIES CO
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