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US 9,574,291 B2Granted
Base interlining, methods for their manufacture and application thereof
AssigneeJohns Manville
InventorsSven Gamert, Krister Draxö
Life of this patent
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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.
Claims20
A binder system comprising:
- a) 10 to 90 wt % (dry mass) of an aqueous dispersion of polymers based on conjugated aliphatic dienes and vinyl aromatic compounds;
- b) 90 to 10 wt % (dry mass) starch, wherein the starch comprises a mixture of amylose and amylopectin and has a molecular weight Mw between 5×104 and 1×107;
- and
- c) 0 to 10 wt % (dry mass) additives;
- with the figures for the percentage by weight relating to the dry mass of the binder system;
- wherein a textile fabric is bonded with the binder system,
- wherein the starch replaces a formaldehyde-containing binder component, and
- wherein the polymers are emulsion polymers consisting of:
- a) 20 to 80 parts by weight of conjugated aliphatic dienes,
- b) 20 to 80 parts by weight of vinyl aromatic compounds,
- c) 0 to 10 parts by weight of ethylenic unsaturated carboxylic acids and/or dicarboxylic acids,
- d) 0 to 20 parts by weight of ethylenic unsaturated carboxylic acid nitriles, manufactured in the presence of water, emulgators and water soluble initiators.
9 more elements
Dependencies are inferred from the claim text.