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Additive for increased hiding and paint composition comprising same

A composition and additive technology, applied in the direction of coating, etc., can solve the problem of not being able to reliably provide the spacing of titanium dioxide particles

Active Publication Date: 2019-09-20
BENJAMIN MOORE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Particles with a low glass transition temperature do not reliably provide spacing between titania particles

Method used

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  • Additive for increased hiding and paint composition comprising same
  • Additive for increased hiding and paint composition comprising same
  • Additive for increased hiding and paint composition comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1. In one embodiment, the additive was prepared by adding 666 g deionized water, 1.0 g emulsifier, 2.0 g sodium bicarbonate and 3.8 g polypropylene glycol PPG-725 to a 5 liter round bottom bottle, the emulsifier For example sodium lauryl sulfate emulsifier, such as commercially available from Solvay Novecare UB. The mixture was heated to about 75°C to 80°C with stirring under nitrogen.

[0046] Acrylic monomer preparation or pre-emulsion by adding 1077.7 g methyl methacrylate and 6.98 g methacrylic acid and 40.8 g sodium lauryl sulfate emulsifier to 301.6 g deionized water UB and 35.9 g of a second emulsifier, methacrylic acid is the main component and produces a polymer with a Tg of about 105°C, a second emulsifier such as polyoxyethylene tridecyl ether phosphate emulsifier, e.g. RS-610A25, which is commercially available from Rhodia. At a temperature of about 78°C, a first amount of about 77 g of the pre-emulsion was added to the round bottom bottle. Aft...

Embodiment 2

[0051] Example 2: A standard paint was produced using 269 pounds of titanium dioxide per 100 gallons of paint. First, the following recipe was used to produce the grind (all values ​​are in pounds per 100 gallons, which is a conventional unit in the paint industry):

[0052] Grinding:

[0053]

[0054] The resulting grind was then let down with the following film-forming binders and other additives.

[0055] Letting:

[0056]

[0057] The resulting paint had a viscosity of 98 KU and 1.12 ICI.

Embodiment 3

[0058] Example 3: Preparation of a paint comprising 85% of the titanium dioxide in the paint of Example 2. In this recipe, 228 lbs TiO 2 / 100 gallons of paint, and prepare the paint in a manner similar to that in Example 2. Supplemented with water by TiO 2 Volume reduction caused by volume reduction. Also, in the final letdown step, 72.7 pounds of water was used instead of 63.6. The viscosity of the resulting paint was 90 KU and 0.904 ICI.

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Abstract

Architectural compositions such as paints and stains contain additives comprising a plurality of latex particles which are added as admixtures to existing mixtures of opacifying pigments and film-forming binders. Each latex particle is made of a latex polymer copolymerized with a polymerizable surfactant. Latex polymers are non-film forming polymers at ambient temperature.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of co-pending US Patent Application Serial No. 13 / 717,781 filed December 18, 2012. The entire disclosure of this application is incorporated herein by reference. technical field [0003] The present invention generally relates to the copolymerization of high glass transition temperature latex monomers in the presence of polymerizable surfactants to produce additives for incorporation into architectural compositions comprising opacifying pigments and binders. Background technique [0004] Architectural compositions such as paints and stains comprise a film-forming continuous phase component which may be aqueous or non-aqueous and which comprises polymers as solutes or as colloidal dispersions. Opacifying pigments or pigments are particulate compounds dispersed in paint binders to provide hiding power and color to paints and coatings. Pigments also improve the durability and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/65C09D7/45
CPCC09D5/022C09D5/027C09D133/08C09D7/65C09D7/45
Inventor G·丹德里奥克斯A·布鲁尔C·雅德尔P·奥格萨列克C·卢斯罗伯特·谢林
Owner BENJAMIN MOORE & CO