摘要:
A process is disclosed for the preparation of multilayered composite materials comprising, as components: (A) a backing material, (B) optionally at least one tie layer and (C) a polymer layer, wherein a polymer layer (C) is formed using a mold, optionally at least one organic adhesive is applied all over or partially to backing material (A) and/or to polymer layer (C) and then polymer layer (C) is bonded with backing material (A) in point, strip or two-dimensional fashion, polymer layer (C) and/or at least one tie layer (B) being prepared from aqueous polymer dispersions which comprise at least one crosslinking agent C and from 0.1 to 5% by weight of at least one solvent selected from dipropylene glycol dimethyl ether and/or 1,2-propanediol diacetate.
摘要:
Multi-layer composite materials comprising a textile sheet material, production and corresponding method of use thereofMultilayered composite materials comprise as components: (D) a textile sheet material, (E) optionally at least one bonding layer, and (F) a polyurethane layer with capillaries passing through the entire thickness of the polyurethane layer, wherein textile sheet material (A) and polyurethane layer (C) are bonded to each other directly or via bonding layer (B).
摘要:
A process for the production of coated textiles comprises the steps of: providing a textile substrate having a first side and a second side opposing the first side; contacting at least a part of the first side of the textile substrate with a spreadable polyurethane mechanical foam; applying a reduced pressure to at least a part of the second side of the textile substrate opposing the first side which has been contacted with the polyurethane mechanical foam; and solidifying the polyurethane mechanical foam with which the textile substrate has been contacted. The invention further relates to a coated textile obtainable by such a process, in particular a synthetic leather.
摘要:
A process for the production of coated textiles comprises the steps of: providing a textile substrate having a first side and a second side opposing the first side; contacting at least a part of the first side of the textile substrate with a spreadable polyurethane mechanical foam; applying a reduced pressure to at least a part of the second side of the textile substrate opposing the first side which has been contacted with the polyurethane mechanical foam; and solidifying the polyurethane mechanical foam with which the textile substrate has been contacted. The invention further relates to a coated textile obtainable by such a process, in particular a synthetic leather.
摘要:
The present invention relates to a process for production of artificial leather comprising top coat, polyurethane layer and optional substrate layer, said process comprising i) providing a release layer, ii) applying one or more than one layer of a top coat to the release layer to an overall top coat layer thickness in the range from 1 to 500 μm, iii) applying first polyurethane system components comprising an isocyanate component (A) and a polyol component (B) to the top coat to form a first polyurethane layer, wherein the isocyanate index of the first polyurethane system components is in the range from 101 to 140, iv) optionally applying further polyurethane system components to the first polyurethane layer to form further polyurethane layers, v) optionally applying a substrate layer to the polyurethane system components, vi) curing the polyurethane system components to form a polyurethane layer, and vii) separating the release layer from the top coat, wherein the overall thickness of the first and optionally further polyurethane layers is in the range from 0.01 to 20 mm and the polyurethane system components are solvent-free. The present invention further relates to an artificial leather obtainable by such a process and to the use of the artificial leather as upper materials for footwear.
摘要:
The invention relates to a cut-to-size format comprising a more particularly sheeting-shaped or layer-shaped backing material (2) comprising a fibrous nonwoven web and/or loop-formingly knitted and/or woven fabric comprising polyamide and/or polyester threads, more particularly polyamide and/or polyester microfibers and/or cotton threads and, applied atop the backing material (2), a coating (4) comprising polyurethane dispersion on a patterned silicone rubber support/mold attached to the backing material (2), optionally via an adhesive layer (7) comprising polyurethane dispersion.The invention provides that the entire polyurethane content of the cut-to-size format (1) is in the range from 60 to 240 g/m2, this basis weight also including any polyurethane already present in the backing material (2) or introduced thereinto in the course of production thereof, and the basis weight of the backing material (2), in particular where applicable any polyurethane present therein, is in the range from 200 g/m2 to 450 g/m2 (FIG. 1).
摘要翻译:本发明涉及一种切割尺寸格式,其包括更特别的片状或层状背衬材料(2),其包括纤维非织造纤维网和/或成形织物和/或织物,其包含聚酰胺和/或聚酯 螺纹,更特别是聚酰胺和/或聚酯微纤维和/或棉线,并且涂覆在背衬材料(2)的顶上,包含聚氨酯分散体的涂层(4),所述涂层(4)在附着到背衬材料(2)上的图案化硅橡胶支撑件/模具上, ,任选地经由包含聚氨酯分散体的粘合剂层(7)。 本发明提供了切割尺寸形式(1)的全部聚氨酯含量在60至240g / m 2的范围内,该基重还包括已经存在于背衬材料(2)中的任何聚氨酯或引入其中的聚氨酯 在其生产过程中,背衬材料(2)的基重,特别是在适用的情况下,其中存在的任何聚氨酯的含量在200g / m 2至450g / m 2的范围内(图1)。
摘要:
Stretchable artificial leather comprising a fibrous substrate comprising tricot knitted fabric, and a polyurethane resin layer laminated on the surface of the fibrous substrate, the stretchable artificial leather having fixed load elongation of from 30 to 60% in each of a longitudinal direction, a lateral direction and a bias direction.
摘要:
An artificial leather comprising a protective layer, a surface layer, and a fibrous substrate, successively laminated, wherein a polyurethane resin forming the surface layer is obtained by reacting a urethane polyisocyanate prepolymer (A) and a polyol component (C) containing a urethane polyol prepolymer (B), the (A) has an equivalent ratio (isocyanate groups/hydroxyl groups) of from 2.0 to 6.0, and has a number average molecular weight of from 3,000 to 30,000, the (B) has an equivalent ratio (isocyanate groups/hydroxyl groups) of from 0.2 to 0.8, and has a number average molecular weight of from 3,000 to 30,000, an equivalent ratio between the urethane polyisocyanate prepolymer (A) and the polyol component (C) (isocyanate groups/active hydrogen groups) is from 1.01 to 2.0, and a weight ratio between the urethane polyisocyanate prepolymer (A) and the polyol component (C) ((A)/(C)) is from 0.7 to 2.0.
摘要:
A coated substrate comprises a substrate and a coating on at least one surface of the substrate. The coating comprises a prepolymer, polymer, or resin produced, for example, by the reaction of (i) an isocyanate (e.g., a polyisocyanate), (ii) an active hydrogen-terminated colorant, and optionally (iii) at least one reactant selected from the group consisting of chain extenders, polyols, internal surfactants, and combinations thereof. Polymer dispersions suitable for use in making such coated substrates comprise such a prepolymer, polymer, or resin.
摘要:
The present invention relates to an artificial leather and a method for manufacturing the same. According to the method of the invention, an elastic layer is disposed on a surface of a base material, a color pattern layer is disposed on an uneven surface of the elastic layer and a cover layer covers the color pattern layer, so as to form the artificial leather. The elastic layer includes a plurality of sparkling materials. By utilizing the sparkling materials, the color pattern layer and the uneven surface, the artificial leather has a sparkling effect at various angles by showing the gradation of the stacking particles (sparkling materials). In addition, the cover layer can protect the color pattern layer on the elastic layer, so that the color pattern layer has excellent sturdiness against peeling and light.