Search

CN-122011506-A - Modifier for resin sheet, polyester resin composition, polyester resin sheet, laminate sheet, and method for producing molded article

CN122011506ACN 122011506 ACN122011506 ACN 122011506ACN-122011506-A

Abstract

The invention provides a modifier for resin sheets, a polyester resin composition, a polyester resin sheet, a laminate sheet and a method for producing a molded article. The purpose of the present invention is to provide a modifier for a resin sheet, which is used in combination with a polyester resin and provides a resin sheet having excellent surface sliding properties without impairing transparency, and a polyester resin composition, a polyester resin sheet, a laminate sheet, and a method for producing a molded article, each comprising the modifier. The modifier for resin sheets of the present invention is a modifier for producing resin sheets, and comprises (A) an ester compound of a ternary-to-six-membered polyol and a fatty acid having a hydrocarbon group having 8 to 22 carbon atoms, and (B) a compound containing a calcium element, wherein the content ratio of the calcium element is 0.1 to 3.0 mass% relative to the modifier.

Inventors

  • YUICHIRO MURAKAMI

Assignees

  • 竹本油脂株式会社

Dates

Publication Date
20260512
Application Date
20211126
Priority Date
20201223

Claims (12)

  1. 1. A modifier for a resin sheet, characterized in that it is a modifier for producing a resin sheet, The modifier contains a component (A) and a component (B) wherein the modifier contains a calcium element in an amount of 0.1 to 3.0 mass%, The component (A) is an ester compound comprising a ternary-to-six-membered polyhydric alcohol of pentaerythritol and a fatty acid having a hydrocarbon group of 8 to 22 carbon atoms, Component (B) is a compound containing a calcium element.
  2. 2. The modifier for resin sheets according to claim 1, wherein the fatty acid used in the formation of the component (a) has the hydrocarbon group having 12 to 18 carbon atoms.
  3. 3. The modifier for resin sheets according to claim 1 or 2, wherein the component (B) contains at least one selected from talc and zeolite.
  4. 4. The modifier for resin sheets according to claim 3, wherein the component (A) is contained in a ratio of 40 to 80 mass% and the component (B) is contained in a ratio of 20 to 60 mass% with the total content ratio of the component (A) and the component (B) being 100 mass%.
  5. 5. A polyester resin composition, characterized in that it is a resin composition for producing a polyester resin sheet, A polyester resin, and a modifier for a resin sheet according to any one of claims 1 to 4.
  6. 6. The polyester resin composition according to claim 5, wherein the modifier for a resin sheet is contained in a ratio of 0.1 to 45 parts by mass, based on 100 parts by mass of the polyester resin.
  7. 7. The polyester resin composition according to claim 6, wherein the modifier for a resin sheet is contained in a ratio of 10 to 45 parts by mass, based on 100 parts by mass of the polyester resin.
  8. 8. A polyester resin sheet comprising a polyester resin and the modifier for a resin sheet according to any one of claims 1 to 4.
  9. 9. The polyester resin sheet according to claim 8, wherein the modifier for a resin sheet is contained in a ratio of 0.1 to 1.5 parts by mass, based on 100 parts by mass of the polyester resin.
  10. 10. A laminate sheet comprising a resin layer formed of the polyester resin sheet according to claim 8 or 9, and another resin layer.
  11. 11. A method for producing a molded article, characterized in that the polyester resin sheet according to claim 8 or 9 is subjected to molding.
  12. 12. A method for producing a molded article, wherein the laminate according to claim 10 is subjected to molding.

Description

Modifier for resin sheet, polyester resin composition, polyester resin sheet, laminate sheet, and method for producing molded article The present application is a divisional application of the application patent application having the application number 202111421214.2, the application day 2021, the application day 11, the application name "modifier for resin sheet, polyester resin composition, polyester resin sheet, laminate sheet and method for producing molded article". Technical Field The present invention relates to a modifier used for producing a polyester resin sheet excellent in transparency and surface sliding properties, and a polyester resin composition, a polyester resin sheet, a laminate sheet, and a method for producing a molded article, each comprising the modifier. Background Films and sheets formed of polyester resins such as polyethylene terephthalate (PET) are excellent in transparency and can be easily processed by bending, punching, cutting, and the like, and thus, for example, containers, lids, and the like of foods, medicines, stationery, and various members can be produced by subjecting the films and sheets to thermoforming. In producing these molded articles, 1 sheet of polyester sheet, which is formed by stacking a plurality of sheets of polyester sheets with a predetermined width and length, is fed to a thermoforming apparatus for processing. However, when the slidability of the sheet is insufficient or stuck, defective products or productivity is obtained. For example, a plurality of containers processed to have a shape are usually stacked and transported, and then 1 container is taken out from 1 container, and then the articles are stored in the containers. However, when the resin raw material is insufficient in slidability or stuck, a plurality of containers may be taken out in an overlapping manner. In order to solve such problems, the following techniques have been known in an attempt to improve the surface properties and to facilitate sliding of the surface of the polyester sheet and the surface of the molded article. Patent document 1 discloses a non-stretched or low-magnification stretched polyester sheet comprising a composition containing 0.04 to 1% by weight of a slip agent particle (silica or the like) having an average particle diameter of 8 to 50 μm and 99.0 to 99.96% by weight of a polyester. Patent document 2 discloses a biaxially stretched polyester film which is formed of a polyester containing internal particles containing a calcium element and a phosphorus element and 50 to 750ppm of silica particles, and has a calcium element content of 0.01 to 0.1 wt% and a phosphorus element content of 0.5 to 2 times equivalent relative to the element content of the calcium element, and in which protrusions having a maximum diameter of 5 μm or less are present on the film surface at a density of 20 to 60 particles/μm 2. Patent document 3 discloses a release laminated polyester film for green sheets, which has a laminated structure of at least 3 layers, wherein one film surface has a surface roughness (Ra) of 0.001 to 0.005 μm, the layer constituting the surface contains 1000ppm or more of alumina particles, the release layer and the green sheet are provided in this order on the surface, the surface roughness (Ra) of the other film surface is 0.010 to 0.030 μm, the depth of 0.2 μm or more of the depressions in the surface of the green sheet is1 or less per 100cm 2, and the layer constituting the surface contains polystyrene particles having a crosslinked structure by a compound containing 2 or more carbon-carbon double bonds in one molecule. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 5-17598 Patent document 2 Japanese patent laid-open No. 6-313095 Patent document 3 Japanese patent laid-open publication 2016-187963 Disclosure of Invention Problems to be solved by the invention The purpose of the present invention is to provide a modifier for a resin sheet, which is used in combination with a polyester resin and provides a resin sheet having excellent surface sliding properties without impairing transparency, and a polyester resin composition, a polyester resin sheet, a laminate sheet, and a method for producing a molded article, each comprising the modifier. Solution for solving the problem The present inventors have found that when a resin composition obtained by using a modifier containing a specific fatty acid ester and containing 0.1 to 3.0 mass% of calcium element relative to the modifier in combination with a polyester resin is used, a resin sheet having excellent surface sliding properties without impairing transparency can be obtained. The present invention is as follows. The modifier for resin sheets of the present invention is a modifier for producing resin sheets, and is characterized by comprising an ester compound of a ternary-to-six-membered polyol as component (A) and a fatty acid having a hydrocarbon group having 8 to