US 2025/0084588 A1 · TRANSLUCENT FILM CONTAINING PIGMENTS, PREPARATION METHOD, AND COMPOSITE STRUCTURE

Abstract

A method of preparing a translucent film comprising the steps of providing a thermoplastic polymer, using the polymer to prepare a first composition containing the polymer and a second composition containing the polymer, mixing the first composition and a pigment to obtain a masterbatch containing 1 mass % to less than 30 mass % of the pigment, mixing the second composition and the masterbatch to obtain a film raw material having a pigment content of 0.05 mass % to 5.0 mass %, and processing the film raw material to obtain the film; a translucent film having uniformly distributed pigments; a composite structure containing the film; and the used of the film and the composite structure as a coating in the interior of a vehicle.

Claims15

Dependent claims

A method of preparing a film having a thickness of 0.05 to 1.50 mm and having a light transmittance of at least 1% at λmax, wherein λmax is the wavelength within the range of 400 nm to 700 nm of the maximum transmittance, the method comprising the following steps:

(a) providing a polymer selected from at least one thermoplastic polymer;
(b) using the polymer to prepare a first composition containing the polymer and a second composition containing the polymer;
(c) mixing the first composition and pigments to obtain a masterbatch containing 1 mass % to less than 30 mass % of the pigments, wherein the pigments have a particle size Dv50, which is the median for a volume distribution as determined by Static Laser Light Scattering, of less than 10 μm;
(d) mixing the second composition and the masterbatch to obtain a film raw material having a pigment content of 0.05 mass % to 5.0 mass %;
and
(e) processing the film raw material to obtain the film.

3 more elements

A film made of a polymer selected from at least one thermoplastic polymer, wherein the film has a thickness of 0.3 to 1.5 mm, a pigment content of 0.05 to 5.0 mass %, and a light transmittance of at least 1% at λmax, wherein λmax is the wavelength within the range of 400 nm to 700 nm of the maximum transmittance, wherein the film has at least one of the following properties (i) to (iii):

(i) the number of particles having a size of more than 1 μm in any surface area of 0.01 mm2 of the film is less than 10, as measured by Scanning Electron Microscopy carried out by sputtering the sample for 60 s with pure gold using a Cressington Sputter Coater 180 Auto;
treating the sample at high vacuum with electron beam at 10-20 keV using a SEM JEOL JSM 6010 LV;
and detecting the secondary electrons, wherein the particle size is the longest diameter of the particle in a projection perpendicular to the film plane;
(ii) the ratio of the light transmittance at λmax between any two areas of 1 mm2 of the film is in the range of 9/10 to 10/9;
(iii) if the pigment content is 2.5 to 5.0 mass %, the light transmittance at λmax is at least 1%;
if the pigment content is more than 1.50 mass % to less than 2.5 mass %, the light transmittance at λmax is at least 10%;
if the pigment content is less than 0.30 mass %, the light transmittance at λmax is at least 40%;
if the pigment content is in the range of 0.30 mass % to 1.50 mass %, the product of the light transmittance (unit:
%) at λmax and the concentration of the pigment (unit:
mass %) is more than 15.

7 more elements

Dependencies are inferred from the claim text.

Translucent film containing pigments, preparation method, and composite structure

Life of this patent

Translucent film containing pigments, preparation method, and composite structure

Life of this patent

Abstract

Claims15