THERMOPLASTIC POLYMER COMPOSITION AND MOLDED ARTICLE

• US 20140349127A1
• Filed: 12/14/2012
• Published: 11/27/2014
• Est. Priority Date: 01/11/2012
• Status: Abandoned Application

• Current Assignee: Kuraray Company Limited
• Original Assignee: Kuraray Company Limited
• Inventors: Minamide, Asako, Masuda, Mikio, Suzuki, Masahiro
• Application Number:
  US14/371,858
• Publication Number:
  US 20140349127A1
• Time in Patent Office: Days
• US Class Current: 428/451
• CPC Class Codes: B29C 45/0001 characterised by the choice of material
• CPC Class Codes: B29C 45/14778 the article consisting of a material with particular properties, e.g. porous, brittle
• CPC Class Codes: B29C 70/68 by incorporating or moulding on preformed parts, e.g. inserts or layers , e.g. foam blocks mould constructions therefor B29C33/12; joining preformed parts by moulding B29C65/70
• CPC Class Codes: B29C 70/683 Pretreatment of the preformed part, e.g. insert
• CPC Class Codes: B29K 2023/12 PP, i.e. polypropylene
• CPC Class Codes: B29K 2023/14 Copolymers of polypropylene B29K2023/16 takes precedence
• CPC Class Codes: B29K 2096/04 Block polymers
• CPC Class Codes: B29K 2105/0005 containing compounding ingredients releasing, lubricating or separating agents B29C33/56, fibers B29K2105/08, B29K2105/12; fillers B29K2105/16, recycled material B29K2105/26
• CPC Class Codes: B29K 2105/0085 Copolymers
• CPC Class Codes: B29K 2105/0088 Blends of polymers
• CPC Class Codes: B29K 2705/02 Aluminium
• CPC Class Codes: B29K 2995/0088 Molecular weight
• CPC Class Codes: B29L 2031/3481 Housings or casings incorporating or embedding electric or electronic elements
• CPC Class Codes: B32B 15/085 comprising polyolefins
• CPC Class Codes: B32B 18/00 Layered products essentially comprising ceramics, e.g. refractory products
• CPC Class Codes: B32B 2270/00 Resin or rubber layer containing a blend of at least two different polymers
• CPC Class Codes: B32B 2274/00 Thermoplastic elastomer material thermoplastic elastomer fibres B32B2262/0215, thermoplastic elastomer particles B32B2264/0221, thermoplastic elastomer foam B32B2266/0292
• CPC Class Codes: B32B 2307/306 Resistant to heat
• CPC Class Codes: B32B 2457/00 Electrical equipment
• CPC Class Codes: B32B 27/06 as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08
• CPC Class Codes: B32B 27/08 : of synthetic resin
• CPC Class Codes: B32B 27/18 : characterised by the use of special additives
• CPC Class Codes: B32B 27/302 : comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 9/005 : comprising one layer of ceramic material, e.g. porcelain, ceramic tile layered products with at least two ceramic layers composed mainly of ceramic B32B18/00
• CPC Class Codes: B32B 9/045 : of synthetic resin
• CPC Class Codes: C04B 2237/34 : Oxidic
• CPC Class Codes: C04B 2237/343 : Alumina or aluminates
• CPC Class Codes: C04B 2237/346 : Titania or titanates
• CPC Class Codes: C04B 2237/348 : Zirconia, hafnia, zirconates or hafnates
• CPC Class Codes: C04B 2237/36 : Non-oxidic
• CPC Class Codes: C04B 2237/365 : Silicon carbide
• CPC Class Codes: C04B 2237/368 : Silicon nitride
• CPC Class Codes: C04B 35/63408 : Polyalkenes
• CPC Class Codes: C04B 35/6344 : Copolymers containing at least three different monomers
• CPC Class Codes: C04B 37/008 : by means of an interlayer consisting of an organic adhesive, e.g. phenol resin or pitch
• CPC Class Codes: C08L 23/10 : Homopolymers or copolymers of propene
• CPC Class Codes: C08L 51/06 : grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• CPC Class Codes: C08L 53/025 : modified
• CPC Class Codes: C09J 153/025 : modified
• CPC Class Codes: Y10T 428/31667 : Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31696 : Including polyene monomers [e.g., butadiene, etc.]
• CPC Class Codes: Y10T 428/31931 : Polyene monomer-containing

Abstract

The present invention is a thermoplastic polymer composition which contains 10-120 parts by mass of a polar group-containing polypropylene resin (B) per 100 parts by mass of a thermoplastic elastomer (A) that is a block copolymer having a polymer block containing an aromatic vinyl compound unit and a polymer block composed of a conjugated diene unit having 40% by mole or more of 1,2-bonds and 3,4-bonds in total, or a hydrogenated product of the block copolymer (provided that a thermoplastic polymer composition containing 1 part by mass or more of a polyvinyl acetal resin is excluded). This thermoplastic polymer composition is able to be bonded with a ceramic, a metal or a synthetic resin without requiring a primer treatment, and has excellent flexibility, mechanical characteristics, moldability, heat resistance and storage stability.

Claims

1. A thermoplastic polymer composition comprising from 10 to 120 parts by mass of a polar group-containing polypropylene resin (B) with respect to 100 parts by mass of a thermoplastic elastomer (A),

wherein thermoplastic elastomer (A) is a block copolymer comprising a polymer block comprising aromatic vinyl compound units and a polymer block comprising conjugated diene compound units having a total amount of 1,2-bonds and 3,4-bonds of 40 mol % or more, or a hydrogenated product of the block copolymer, and

provided that a thermoplastic polymer composition containing 1 part by mass or more of a polyvinyl acetal resin is excluded.

2. The thermoplastic polymer composition according to claim 1, wherein the conjugated diene compound units are isoprene units.

3. The thermoplastic polymer composition according to claim 1, wherein said thermoplastic polymer composition comprises 10 to 100 parts by mass of the polar group-containing polypropylene resin (B) with respect to 100 parts by mass of the thermoplastic elastomer (A).

4. The thermoplastic polymer composition according to claim 1, wherein the thermoplastic elastomer (A) has a weight average molecular weight (Mw) of from 70,000 to 200,000, and is a linear block copolymer.

5. The thermoplastic polymer composition according to claim 1, further comprising a tackifier resin (C) of from 1 to 100 parts by mass per 100 parts by mass of the thermoplastic elastomer (A).

6. The thermoplastic polymer composition according to claim 1, wherein the polar group-containing polypropylene resin (B) is a carboxylic acid-modified polypropylene resin.

7. A molded article comprising the thermoplastic polymer composition of claim 1.

8. The molded article according to claim 7, wherein the thermoplastic polymer composition is adhered to a first ceramic, metal and/or synthetic resin.

9. The molded article according to claim 8, further comprising a second ceramic, metal or synthetic resin, wherein the second ceramic, metal or synthetic resin is adhered to the first ceramic, metal, or synthetic resin via the thermoplastic polymer composition.

10. A method for producing a molded article prepared from a thermoplastic polymer composition by insert molding, the method comprising

filling a mold holding an insert part with the thermoplastic polymer composition of claim 1, and

molding the thermoplastic polymer composition, wherein a temperature of the insert part during the insert molding is from 30 to 150°

C.

11. The method for producing the molded article according to claim 10, wherein the insert part is a ceramic, a metal and/or a synthetic resin.

12. The thermoplastic polymer composition of claim 1 further comprising a softener, a plasticizer, an inorganic filler, an antioxidant, a lubricant, a light stabilizer, a processing aid, a coloring agent such as a pigment or a dye, a flame retardant, an antistatic agent, a matting agent, a silicone oil, a blocking inhibitor, an ultraviolet absorber, a release agent, a foaming agent, an antibacterial agent, an anti-mold agent, and/or a perfume.

13. The thermoplastic polymer composition of claim 1 wherein the A hardness is from 35 to 85.

14. The thermoplastic polymer composition of claim 1 wherein the melt flow rate at 230°

C. and a load of 21.18N is from 2 to 30 g/10 min.

15. The thermoplastic polymer composition according to claim 1 wherein the thermoplastic elastomer (A) has a weight average molecular weight (Mw) of from 80,000 to 180,000, and is a linear block copolymer.