# US 2018/0022880 A1 · Film

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- Number: US 2018/0022880 A1
- Document ID: US20180022880A1
- Status: Published application
- Kind: A1
- Application number: 15/546,728
- Filed: 2016-03-14
- Published: 2018-01-25
- Earliest claimed: 2015-03-17
- Assignees: Teijin Limited
- Applicants: Teijin Limited
- Inventors: Naoshi TAKAHASHI; Tetsuya MOTOYOSHI; Kenta IMAZATO; Toshiyuki SHIMIZU; Shoichi MAEKAWA; Katsuhiro YAMANAKA
- Web page: https://patentgrep.com/patent/US20180022880A1

## CPC

- C08J 5/18: Manufacture of films or sheets
- B32B 27/18: characterised by the use of special additives
- B32B 27/36: comprising polyesters
- B32B 27/365: {comprising polycarbonates}
- C08J 7/0427: {with only one layer of a composition containing a polymer binder (with more layers C08J7/042)}
- C08J 7/043: Improving the adhesiveness of the coatings per se, e.g. forming primers (adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50)
- C08J 7/046: Forming abrasion-resistant coatings; Forming surface-hardening coatings
- C08K 5/0041: {Optical brightening agents, organic pigments}
- C08K 5/3435: Piperidines
- C08K 5/3475: condensed with carbocyclic rings
- C08K 5/3492: Triazines
- C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates
- C08J 2369/00: Characterised by the use of polycarbonates; Derivatives of polycarbonates
- C08J 2475/06: from polyesters
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

A film having high transparency, weather resistance, moist heat resistance, excellent tensile characteristics, a good hue and high surface hardness. The film comprises: (a) 100 parts by weight of a polycarbonate resin (component a) containing a carbonate unit (A) represented by the following formula (A) and having a specific viscosity measured from a 20° C. methylene chloride solution of 0.2 to 0.5; (b) 0.03 to 2.5 parts by weight of at least one ultraviolet absorbent (component b) selected from the group consisting of an ultraviolet absorbent having a benzotriazole skeleton and an ultraviolet absorbent having a triazine skeleton; (c) 0.0001 to 0.02 part by weight of a coloring agent (component c); and (d) 0.01 to 1 part by weight of a hindered amine-based optical stabilizer (component (d):

## Claims

### Claim 1

A film comprising:
(a) 100 parts by weight of a polycarbonate resin (component a) comprising a carbonate unit (A) represented by the following formula (A) and having a specific viscosity measured with a 20° C. methylene chloride solution of 0.2 to 0.5;
(b) 0.03 to 2.5 parts by weight of at least one ultraviolet absorbent (component b) selected from the group consisting of an ultraviolet absorbent having a benzotriazole skeleton and an ultraviolet absorbent having a triazine skeleton;
(c) 0.0001 to 0.02 part by weight of a coloring agent (component c); and
(d) 0.01 to 1 part by weight of a hindered amine-based optical stabilizer (component d).

### Claim 2 (depends on 1)

The film according to claim 1, wherein the ultraviolet absorbent (component b) has a maximum absorbance (λmax) at a wavelength of 300 to 360 nm and the ultraviolet absorbent (component b) has an ultraviolet absorption rate at a wavelength of 315 nm measured by a method in this text of not less than 0.3%.

### Claim 3 (depends on 1)

The film according to claim 1, wherein the ultraviolet absorbent (component b) has a maximum absorbance (λmax) at a wavelength of 310 to 330 nm and the ultraviolet absorbent (component b) has an ultraviolet absorption rate at a wavelength of 315 nm measured by a method in this text of not less than 0.8%.

### Claim 4 (depends on 1)

The film according to claim 1, wherein the ultraviolet absorbent (component b) is 2-[4-[4,6-bis([1,1′-biphenyl]-4-yl)-1,3,5-triazin-2-yl]-3-hydroxyphenoxy]-isooctyl ester.

### Claim 5 (depends on 1)

The film according to claim 1, wherein the ultraviolet absorbent (component b) is 2,2-methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol].

### Claim 6 (depends on 1)

The film according to claim 1, wherein the hindered amine-based optical stabilizer (component d) is a compound including a structure represented by the following formula (D):
wherein in the formula (D), R1 to R4 may be the same or different and are each an aliphatic hydrocarbon group having 1 to 6 carbon atoms, and R5 is a hydrogen atom or aliphatic hydrocarbon group having 1 to 6 carbon atoms.

### Claim 7 (depends on 1)

The film according to claim 1, wherein the polycarbonate resin (component a) further comprises a carbonate unit (B-1) derived from at least one compound selected from the group consisting of an aliphatic diol compound and an alicyclic diol compound.

### Claim 8 (depends on 7)

The film according to claim 7, wherein the aliphatic diol compound is a linear aliphatic diol compound having 2 to 30 carbon atoms.

### Claim 9 (depends on 7)

The film according to claim 7, wherein the alicyclic diol compound is 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro(5.5)undecane.

### Claim 10 (depends on 1)

The film according to claim 1, wherein the glass transition temperature of the polycarbonate resin (component a) is 70 to 150° C.

### Claim 11 (depends on 1)

The film according to claim 1 which has a tensile elongation at the glass transition temperature (Tg) of not less than 100%.

### Claim 12 (depends on 1)

The film according to claim 1 which has a light transmittance at 315 nm of not more than 3%.

### Claim 13 (depends on 1)

The film according to claim 1 which has a thickness of 30 to 500 μm.

### Claim 14 (depends on 1)

A film having an anchor coat layer, a vapor-deposited layer or a hard coat layer on at least one side of the film of claim 1.

### Claim 15 (depends on 1)

A film for decoration including the film of claim 1.