Preparations as hydrophobing agents

US10822500B2 · kind B2 · utility

Assignee

• RUDOLF GMBH · DE

Inventors

• Helmut Glas · Penzberg, DE
• Christine C. Albert · Noderwiechs, DE
• Gunther Duschek · Penzberg, DE
• Dirk SIELEMANN · Wolfratshausen, DE

Key dates

• Filing date: Jul 6, 2017
• Grant date: Nov 3, 2020
• Expiry date: Jul 6, 2037

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M2200/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Preparations of a polyurethane and/or polyurea and a copolymer which are hydrophobic contain at least one conversion product (S), at least one copolymer (C), optionally at least one (blocked) polyisocyanate, optionally a solvent, and optionally at least one surface-active substance. The conversion product (S) may be the reaction product of at least one compound (A) with at least one unblocked or at least partially blocked di-, tri- or polyisocyanate (IC). The compound A may be the reaction product of a polyhydric alcohol with a carboxylic acid or with an alkylisocyanate, or a reaction product of an alkanolamine and/or alkylamine (a3) with a carboxylic acid and/or alkylisocyanate. The highly hydrophobic preparations may be applied to textiles without negatively influencing a subsequent adhesion of the textile substrate or the membrane permeability of the substrate even after thermal treatment, and exhibit very good wash permanence on the substrates.