Composition for making coated yarn

Patent metadata

Field	Value
Publication number	US-10870768-B2
Application number	US-201816203696-A
Country	US
Kind code	B2
Filing date	Nov 29, 2018
Priority date	Nov 29, 2018
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

An aqueous composition is used to clad yarn cores to provide unique coated yarns. This aqueous composition contains: (i) porous particles present in an amount of at least 2 weight % and up to and including 10 weight %, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of 2-50 μm; (ii) a film-forming binder material having a Tg of less than or equal to 25° C., that is present in an amount of 25-60 weight %; (iii) an inorganic filler material having a value of less than 5 on the MOHS scale of mineral hardness, in an amount of at least 2-15 weight %; and (iv) an aqueous medium in an amount of at least 35 weight % in which the film-forming binder material is soluble or dispersible.

First claim

The invention claimed is:

1. An aqueous composition comprising:
(i) porous particles present in an amount of at least 2 weight % and up to and including 10 weight %, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of at least 2 μm and up to and including 50 μm;
(ii) a film-forming binder material having a T g of less than or equal to 25° C., which film-forming binder material is present in an amount of at least 25 weight % and up to and including 60 weight %;
(iii) an inorganic filler material having a value of less than 5 on the MOHS scale of mineral hardness, which non-abrasive, whitening inorganic filler material is present in an amount of at least 2 weight % and up to and including 15 weight %; and
(iv) an aqueous medium in an amount of at least 35 weight % in which the film-forming binder material is soluble or dispersible,
wherein the amounts of the (i) porous particles, the (ii) film-forming binder material, the (iii) inorganic filler material, and the (iv) aqueous medium are based on the total weight of the aqueous composition.

2. The aqueous composition of claim 1 , consisting essentially of the (i) porous particles, the (ii) film-forming binder material, the (iii) inorganic filler material, and the (iv) aqueous medium.

3. The aqueous composition of claim 1 , wherein the (iv) aqueous medium comprises water in an amount of at least 80 weight %, based on the total weight of solvents.

4. The aqueous composition of claim 1 having a viscosity of at least 5 centipoise (0.005 Pa-sec) and up to and including 5000 centipoise (5 Pa-sec) at a shear rate of 10K sec −1 as measured at 25° C.

5. The aqueous composition of claim 1 , wherein the (iii) inorganic filler material is a non-abrasive, whitening inorganic filler material.

6. The aqueous composition of claim 1 , wherein the (iii) inorganic filler material comprises barium sulfate, calcium carbonate, mica, fluorite, clay, gypsum, or zinc sulfide.

7. The aqueous composition of claim 1 , wherein the (iii) inorganic filler material comprises zinc sulfide.

8. The aqueous composition of claim 1 , wherein the (i) porous particles have a mode particle size of at least 3 μm and up to and including 30 μm, a porosity of at least 30 volume % and up to and including 65 volume %, and have a continuous polymeric phase composed of one or more of a polyester, a vinyl copolymer, and a cellulosic polymer such as cellulose acetate, cellulose butyrate, cellulose acetate butyrate, and cellulose acetate propionate.

9. The aqueous composition of claim 1 , having a solids content of at least 30% and up to and including 65%.

10. The aqueous composition of claim 1 , wherein the (ii) film-forming binder material comprises one or more acrylic polymers.

11. The aqueous composition of claim 1 , wherein the (ii) film-forming binder material comprises a copolymer derived from vinyl chloride and one or more non-halogenated acrylic monomers.

12. The aqueous composition of claim 1 , further containing one or more of the following optional materials that are different from all of (i), (ii), and (iii): thickening agent, flame retardant, UV radiation stabilizer, tinting agent, dispersant, biocide, heat stabilizer, lubricant, and moisture or deflection control agent, and the total amount of all of these optional materials is less than 15 weight %, based on the total weight of the aqueous composition.

13. An aqueous composition consisting essentially of:
(i) porous particles present in an amount of at least 2 weight % and up to and including 10 weight %, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of at least 3 μm and up to and including 30 μm;
(ii) a film-forming binder material having a T g of less than or equal to 0° C., which film-forming binder material is water-soluble or water-dispersible, and is present in an amount of at least 25 weight % and up to and including 60 weight %;
(iii) a non-abrasive, whitening inorganic filler material having a value of less than 5 on the MOHS scale of mineral hardness, which non-abrasive, whitening inorganic filler material comprises zinc sulfide and is present in an amount of at least 2 weight % and up to and including 15 weight %; and
(iv) an aqueous medium in an amount of at least 35 weight %, and comprises water in an amount of at least 80 weight % based on the weight of total solvents,
wherein the amounts of the (i) porous particles, the (ii) film-forming binder material, the (iii) non-abrasive, whitening inorganic filler material, and the (iv) aqueous medium are based on the total weight of the aqueous composition.

14. The aqueous composition of claim 13 , wherein the (i) porous particles contain no carbon black.

Assignees

• Eastman Kodak Co

Inventors

• Brick Mary Christine
• Nair Mridula
• Sedita Joseph Salvatore

Classifications

• D06M15/507

  Polyesters · CPC title

• C09D7/20

  Diluents or solvents · CPC title

• C09D127/06

  Homopolymers or copolymers of vinyl chloride · CPC title

• D06M11/76

  with carbon oxides or carbonates (D06M11/75 takes precedence; with percarbonic acids or their salts D06M11/50; with urea D06M13/432) · CPC title

• D06M15/37

  Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title