IP Library Patent Application 15684015
Patent Application
App. No. 15/684,015

MULTI-LAYER COMPOSITE MATERIAL, PRODUCTION AND USE THEREOF

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Quick Facts
Patent No.
US None
App. No.
15/684,015
Abstract

Multi-layer composite material, production and use thereof A multilayered composite material comprises as components: (A) a sheet material, (B) a material capable of absorbing water or aqueous fluids, (C) at least one bonding layer and (D) a polyurethane layer with capillaries passing through the entire thickness of the polyurethane layer, wherein the polyurethane layer (D) comes into direct contact with sheet material (A) or absorption-capable material (B) in one or more places.

Claims (12)

1 - 2 . (canceled)

22 . A process for producing a multilayered composite material comprising as components:

(A) a sheet material,

(B) a material capable of absorbing water or aqueous fluids,

(C) at least one bonding layer and

(D) a polyurethane layer with capillaries passing through the entire thickness of the polyurethane layer,

wherein the polyurethane layer (D) comes into direct contact with sheet material (A) or absorption-capable material (B) in one or more places;

the process comprising bonding a material (B), capable of absorbing water or aqueous fluids, to a sheet material (A), forming a polyurethane layer (D) with the aid of a mold, applying at least one organic adhesive uniformly or partially onto sheet material (A) bonded to absorption-capable material (B) and/or onto polyurethane layer (D) and then bonding polyurethane layer (D) pointwise, stripwise or areawise to said sheet material (A) combined with said absorption-capable material (B)

23 . The process according to claim 22 wherein said polyurethane layer (D) is formed with the aid of a silicone mold.

24 . The process according to claim 23 , wherein said silicone mold comprises a silicone mold structured with the aid of laser engraving.

25 . The process according to claim 22 , wherein said mold is structured by using a laser to cut wells into the mold which have an average depth in the range from 50 to 25 μm and a center-to-center spacing in the range from 50 to 250 μm.

26 . The process according to claim 22 , wherein an interlayer (E) is placed between said absorption-capable material (B) and said bonding layer (C), between said bonding layer (C) and polyurethane layer (D), or between two bonding layers (C).

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 12, 2018
From: BASF SE
To: BASF COATINGS GMBH
Reel/Frame 045518/0239 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 10, 2018
From: RUDOLF, PETER; JOKISCH, CARL; WEISER, JURGEN
To: BASF SE
Reel/Frame 045488/0136 →