Polymer modified asphalt roofing material

Patent metadata

Field	Value
Publication number	US-10907354-B2
Application number	US-201816222239-A
Country	US
Kind code	B2
Filing date	Dec 17, 2018
Priority date	Dec 15, 2017
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A shingle coating asphalt composition is provided that is produced from a paving grade asphalt. The asphalt composition comprises a paving-grade asphalt that has been modified with one or more polymer additives; and a secondary additive comprising one or more of a viscosity reducing agent, a wax, a salt of a fatty acid ester, and an amide of a fatty acid. The shingle coating asphalt coating composition is used to make a shingle. The shingle includes a substrate, the asphalt, and roofing granules.

First claim

The invention claimed is:

1. A roofing shingle comprising:
a substrate having a first surface and an opposing second surface;
a polymer and secondary additive modified asphalt coating on the first surface of the substrate;
wherein the polymer and secondary additive modified asphalt coating comprises:
40-80 wt. % of a filler based on the total weight of the polymer-modified asphalt composition;
a paving-grade asphalt;
a polymer additive; and
a secondary additive, wherein the secondary additive is a viscosity reducing agent, and
wherein the polymer and secondary additive modified asphalt coating comprises 85-99 wt. % asphalt, 1-13 wt. % polymer additive, and 1-6 wt. % secondary additive, based on the total weight of the components of the polymer and secondary additive modified asphalt coating excluding the filler;
a strip of nail zone reinforcement material on a first portion of the polymer and secondary additive modified asphalt coating, the strip of nail zone reinforcement material having a length and a width, where the width is from about 0.5 inches to about 2.0 inches and the length is greater than the width; and
roofing granules on a second portion of the polymer and secondary additive modified asphalt coating;
wherein a transverse adhesion of the strip of nail zone reinforcing material to the polymer and secondary additive modified asphalt coating is greater than a transverse adhesion of an otherwise identical shingle having the same nail zone reinforcement material and a conventional oxidized asphalt without secondary additive and without polymer additive.

2. The roofing shingle of claim 1 wherein the viscosity reducing agent comprises one or more of a wax, a salt of a fatty acid ester, and an amide of a fatty acid.

3. The roofing shingle of claim 1 wherein the transverse adhesion of the strip of nail zone reinforcing material to the polymer and secondary additive modified asphalt coating is more than 5% greater than the transverse adhesion of the otherwise identical shingle having the same nail zone reinforcement material and a conventional oxidized asphalt without secondary additive and without polymer additive.

4. The roofing shingle of claim 1 wherein the strip of nail zone reinforcement material is a woven polyester fabric.

5. The roofing shingle of claim 1 wherein the polymer additive is styrene-butadiene rubber.

6. The roofing shingle of claim 1 wherein the secondary additive is a Fischer-Tropsch wax.

7. The roofing shingle of claim 1 wherein the polymer and secondary additive modified asphalt coating includes the polymer additive in an amount of 2-7 wt. % and the secondary additive in an amount of 1.6-3 wt. % based on the total weight of the components of the polymer and secondary additive modified asphalt coating excluding the filler.

8. A roofing shingle comprising:
a substrate having a first surface and an opposing second surface;
a polymer and secondary additive modified asphalt coating on the first surface of the substrate;
wherein the polymer and secondary additive modified asphalt coating comprises:
40-80 wt. % of a filler based on the total weight of the polymer-modified asphalt composition;
a paving-grade asphalt;
a polymer additive; and
a secondary additive, wherein the secondary additive is a viscosity reducing agent, and
wherein the polymer and secondary additive modified asphalt coating comprises 85-99 wt. % asphalt, 1-13 wt. % polymer additive, and 1-6 wt. % secondary additive, based on the total weight of the components of the polymer and secondary additive modified asphalt coating excluding the filler;
a strip of nail zone reinforcement material on a first portion of the polymer and secondary additive modified asphalt coating, the strip of nail zone reinforcement material having a length and a width, where the width is from about 0.5 inches to about 2.0 inches and the length is greater than the width; and
roofing granules on a second portion of the polymer and secondary additive modified asphalt coating;
wherein a transverse adhesion of the strip of nail zone reinforcing material to the polymer and secondary additive modified asphalt coating is greater than 5 lbf.

9. The roofing shingle of claim 8 wherein the viscosity reducing agent comprises one or more of a wax, a salt of a fatty acid ester, and an amide of a fatty acid.

10. The roofing shingle of claim 8 wherein the strip of nail zone reinforcement material is a woven polyester fabric.

11. The roofing shingle of claim 8 wherein the polymer additive is styrene-butadiene rubber.

12. The roofing shingle of claim 8 wherein the secondary additive is a Fischer-Tropsch wax.

13. The roofing shingle of claim 8 wherein the transverse adhesion of the strip of nail zone reinforcing material to the polymer and secondary additive modified asphalt coating is more than 5% greater than the transverse adhesion of an otherwise identical shingle having the same nail zone reinforcement material and a conventional oxidized asphalt without the secondary additive and without the polymer additive.

14. The roofing shingle of claim 8 wherein the polymer and secondary additive modified asphalt coating includes the polymer additive in an amount of 2-7 wt. % and the secondary additive in an amount of 1.6-3 wt. % based on the total weight of the components of the polymer and secondary additive modified asphalt coating excluding the filler.

Assignees

• Owens Corning Intellectual Capital Llc

Inventors

• Latorre Carmen Anthony
• Honsvick Jacob Paul
• Kasprzak Christopher Patrick
• Buckwalter Daniel James
• Harrington Edward R
• Davis Jonathan Ross
• Lewandowski Laurand Henry
• Ploense David Michael
• Smith William Edwin
• Schweiger Scott W

Classifications

• E04D12/002

  Sheets of flexible material, e.g. roofing tile underlay · CPC title

• E04D2001/3467

  through apertures, holes or slots · CPC title

• E04D1/30

  Special roof-covering elements, e.g. ridge tiles, gutter tiles, gable tiles, ventilation tiles (E04D3/40 takes precedence) · CPC title

• B32B2262/10

  Inorganic fibres · CPC title

• B32B5/022

  Non-woven fabric · CPC title