Vanessa R Gordon

US Patent:

20200263359, Aug 20, 2020

Filed:

May 7, 2020

Appl. No.:

16/868856

Inventors:

- Parsippany NJ, US
Vanessa Gordon - Montvale NJ, US
Philippe Schottland - Sparta NJ, US

Assignee:

SUN CHEMICAL CORPORATION - Parsippany NJ

International Classification:

D21H 19/58
C09D 133/12
C09D 7/20
C09D 7/40
C09D 7/61
C09D 7/65
D21H 19/40

Abstract:

The present invention provides water-based coatings that provide liquid resistance when applied to various substrates. In some embodiments, more than one layer of coatings can be applied, using multiple coating stations. The coatings are particularly suitable for cellulosic substrates such as paper or paper board. In addition to liquid resistance, the coatings have good heat sealability, and are resistant to roll blocking. Preferably, the coatings are recyclable and/or repulpable with the substrates to which they are applied. The coating compositions comprise one or more polymer binders, and one or more particles. Preferably, at least one polymer binder has a glass transition temperature (Tg) less than 10 C. Preferably, at least one polymer binder has a heat seal onset temperature of less than 200 C. Preferably, at least one particle has a mean particle size greater than 4 μm. It is also preferable that the particles have a melting point greater than 60 C.

US Patent:

20200056052, Feb 20, 2020

Filed:

Oct 31, 2017

Appl. No.:

16/341741

Inventors:

- Parsippany NJ, US
Vanessa Gordon - Montvale NJ, US
Saverio Lucci - Clifton NJ, US
Philippe Schottland - Sparta NJ, US

Assignee:

SUN CHEMICAL CORPORATION - Parsippany NJ

International Classification:

C09D 5/00
C09D 125/14
C09D 133/06
C09D 7/40
C09D 7/65

Abstract:

Described herein are coatings which impart oil, grease, and water resistance to various materials, such as paper, paperboard and polymeric materials. Such coatings may be applied as barrier coatings to the substrate materials in order to inhibit and prevent the transmission of oil, grease and water; that is, to prevent oil, water grease from passing into and/or through the substrate material. The coatings include an acrylic-based polymer latex, a styrene-butadiene rubber latex, a styrene-acrylic resin solution, a large particle size wax, and optionally, a small particle size wax. Also disclosed herein is a process of preparing the coatings. Also disclosed are products to which the coatings have been applied in order to impart oil, grease and/or water resistance, and processes for preparing such products.