Coating for projection screen and preparation method thereof

A technology for projection screens and coatings, which is applied in the direction of fireproof coatings, reflection/signal coatings, polyurea/polyurethane coatings, etc., which can solve the problems of indoor darkening and low brightness, and achieve improved brightness coefficient, excellent heat resistance of coatings, Good chemical resistance effect

Active Publication Date: 2022-03-22
DONGLAI COATING TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, due to the low brightness of the previous projection effect, it is necessary to darken the room when using it.

Method used

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  • Coating for projection screen and preparation method thereof
  • Coating for projection screen and preparation method thereof
  • Coating for projection screen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A coating composition for a projection screen, which is composed of a component A resin paint and a component B curing agent in a weight ratio of 100:25;

[0036] Wherein, the A component resin paint comprises the following components and parts by weight:

[0037]

[0038] The curing agent of the B component includes the following components and parts by weight:

[0039]

[0040] A method for preparing a coating composition for a projection screen specifically comprises the following steps:

[0041] (1) Add effect aluminum pigment, effect pearl powder, hollow glass powder diffusing agent, hollow organic powder diffusing agent, titanium dioxide and other pigments and dispersants and hydroxyl acrylic resin into the dispersion tank by weight, and stir evenly , then add relevant solvents, stir at low speed for 20-30min, and then stir at high speed for 25-35min, then import it into a sand mill disperser to grind and disperse to a fineness below 30μm, add thixotropic a...

Embodiment 2

[0045] A coating composition for a projection screen, which is composed of a component A resin paint and a component B curing agent in a weight ratio of 100:25;

[0046] Wherein, the A component resin paint comprises the following components and parts by weight:

[0047]

[0048] The curing agent of the B component includes the following components and parts by weight:

[0049]

[0050]

[0051] A method for preparing a coating composition for a projection screen specifically comprises the following steps:

[0052] (1) Add effect aluminum pigment, effect pearl powder, hollow glass powder diffusing agent, hollow organic powder diffusing agent, titanium dioxide and other pigments and dispersants and hydroxyl acrylic resin into the dispersion tank by weight, and stir evenly , then add relevant solvents, stir at low speed for 20-30min, and then stir at high speed for 25-35min, then import it into a sand mill disperser to grind and disperse to a fineness below 30μm, add t...

Embodiment 3

[0056] A coating composition for a projection screen, which is composed of a component A resin paint and a component B curing agent in a weight ratio of 100:25;

[0057] Wherein, the A component resin paint comprises the following components and parts by weight:

[0058]

[0059]

[0060] The curing agent of the B component includes the following components and parts by weight:

[0061]

[0062] A method for preparing a coating composition for a projection screen specifically comprises the following steps:

[0063] (1) Add effect aluminum pigment, effect pearl powder, hollow glass powder diffusing agent, hollow organic powder diffusing agent, titanium dioxide and other pigments and dispersants and hydroxyl acrylic resin into the dispersion tank by weight, and stir evenly , then add relevant solvents, stir at low speed for 20-30min, and then stir at high speed for 25-35min, then import it into a sand mill disperser to grind and disperse to a fineness below 30μm, add t...

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Abstract

The invention relates to a coating for projection screen and a preparation method thereof. The coating comprises the following components in parts by mass: component A: 0-20 parts of effect aluminum pigment, 0-20 parts of effect pearl powder, and 1-20 parts of hollow glass powder diffusing agent 10 parts, 1-10 parts of hollow organic powder diffusing agent, 0-20 parts of other pigments, 20-70 parts of hydroxyl acrylic resin, 2-20 parts of thixotropic additive, 0.2-5 parts of dispersant, 10-40 parts of solvent, Component B: 2-20 parts of polydiisocyanate containing NCO effective groups, 0.2-2 parts of additives, 2-20 parts of solvent; the mass ratio of A component to B component is (3-5):1 . Compared with the prior art, the present invention can prepare a wide range of light diffusing and light reflective primer coatings, effectively improve the brightness coefficient of the screen, provide wider horizontal and vertical viewing angles, and improve projection effects.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a coating for a projection screen and a preparation method thereof. Background technique [0002] As a one-to-many or many-to-many communication method, projectors can effectively help business elites communicate and interact to achieve simple and effective business effects. On the other hand, with the advancement and development of science and technology, in recent years, large-scale home projectors for the purpose of achieving perfect and pleasant viewing effects have gradually become popular, and you can also experience the visual impact of a movie theater at home. [0003] Conventional coatings for projection screens have low light diffusivity, and the resulting screens can only be viewed from a limited range of angles relative to the projection surface. As a general paint improvement method, there are methods such as i) increasing the aluminum pigment content in the paint,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/33C09D5/00C09D7/61
CPCC09D175/04C09D5/004C09D5/002C09D5/18C09D7/61C09D7/70C09D7/69C08K2003/0812C08K2003/265C08K2201/014C08L2201/08C08L89/00C08K3/08C08K3/26C08K7/28C08K7/22C08K13/04
Inventor 朱忠敏罗映兵叶小明
Owner DONGLAI COATING TECH SHANGHAI
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