Base interlining, methods for their manufacture and application thereof

Patent metadata

Field	Value
Publication number	US-12359370-B2
Application number	US-202217872359-A
Country	US
Kind code	B2
Filing date	Jul 25, 2022
Priority date	Dec 14, 2007
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

The invention relates to a novel binder system and its use for bonding textile fabrics as well as products containing such bonded textile fabrics. The materials according to the invention are suitable for manufacturing base interlinings which may be used for manufacturing base interlinings for sarking, roofing and sealing membranes, particularly for manufacturing coated sarking, roofing and sealing membranes.

First claim

The invention claimed is:

1. A textile fabric comprising:
spunbonded textile fibers; and
a binder that solidifies the textile fibers into the textile fabric,
wherein the binder is formed from a binder system comprising an aqueous anionic dispersion of:
starch; and
emulsion polymers; and

wherein the emulsion polymers comprise from 20 to 80 parts by weight of vinyl aromatic compounds.

2. The textile fabric of claim 1 , wherein the binder system has 3 wt. % or less of the ethylenically unsaturated carboxylic acids based on the weight of the binder system.

3. The textile fabric of claim 1 , wherein the textile fabric has a heat dimensional stability of at most 1.6% in a longitudinal direction and at most 1.7% in a cross direction.

4. The textile fabric of claim 1 , wherein the textile fibers comprise polyester fibers.

5. The textile fabric of claim 1 , wherein the textile fibers comprise one or more type of reinforcing fibers selected from the group consisting of aramid fibers, carbon fibers, glass fibers, mineral fibers, high-strength polyester fibers, high-strength polyamide fibers, and metal fibers.

6. The textile fabric of claim 1 , wherein the starch comprises at least one vegetable starch selected from the group consisting of potatoes, manioc, arrowroot, batata, wheat, maize, rye, rice, barley, millet, oat, sorghum, chestnuts, acorns, beans, peas, and bananas.

7. The textile fabric of claim 1 , wherein the starch comprises a mixture of amylose and amylopectin, and has a molecular weight M w between 5×10 4 and 1×10 7 .

8. The textile fabric of claim 1 , wherein the binder system further comprises one or more emulgators.

9. The textile fabric of claim 8 , wherein the emulgators are selected from the group consisting of polyalkylene glycol, sulfonated parafinic hydrocarbons, alkyl sulphates, and alkaline metallic salts of fatty acids.

10. The textile fabric of claim 1 , wherein the binder system further comprises one or more additives selected from the group consisting of a preservative, a stabilizer, an antioxidant, an antifoaming agent, a waterproofing agent, a UV stabilizer, a filler, and a pigment.

11. The textile fabric of claim 1 , wherein the textile fabric has a weight per unit area of 20 g/m 2 to 500 g/m 2 .

12. An article comprising:
a fiber-containing textile fabric; and
a binder to solidify the textile fabric,
wherein the binder is formed from a binder system comprising an aqueous dispersion of:
starch; and
emulsion polymers; and

wherein the emulsion polymers comprise from 20 to 80 parts by weight of vinyl aromatic compounds.

13. The article of claim 12 , wherein the binder system has 3 wt. % or less of the ethylenically unsaturated carboxylic acids based on the weight of the binder system.

14. The article of claim 12 , wherein the article has a heat dimensional stability of at most 1.6% in a longitudinal direction and at most 1.7% in a cross direction.

15. The article of claim 12 , wherein the article is selected from the group consisting of a sarking membrane, a roofing membrane, and a sealing membrane.

16. The article of claim 15 , wherein the article is a bituminized roofing membrane.

17. The article of claim 12 , wherein the article further comprises a granular material on at least one surface of the article.

18. A textile fabric which has been bonded with a binder system, the binder system comprising:
10 to 90 wt. % (dry mass) of an aqueous anionic dispersion of polymerisates based on conjugated aliphatic dienes and vinyl aromatic compounds,
10 to 90 wt. % (dry mass) starch, and
0 to 10 wt. % (dry mass) additives,
wherein said fabric is a spunbonded nonwoven based on partially aromatic or fully aromatic polyesters; and
wherein the vinyl aromatic compounds are present in an amount from 20 to 80 parts by weight.

19. The textile fabric according to claim 18 , wherein the aqueous dispersion has 5 wt. % or less of ethylenically unsaturated carboxylic acids based on the weight of the binder system.

Assignees

• Johns Manville

Inventors

• Gamert Sven
• Draxo Krister

Classifications

• G02B27/0081

  with means for altering, e.g. enlarging, the entrance or exit pupil · CPC title

• D06N3/0056

  characterised by the compounding ingredients of the macro-molecular coating (D06N3/005 takes precedence) · CPC title

• D06N5/003

  coated with bitumen · CPC title

• D06N3/04

  with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• D06N3/18

  with two layers of different macromolecular materials (D06N3/08 takes precedence); {(with two layers of the same kind of macromolecular material D06N2213/03)} · CPC title