Thermoplastic resin composition and toilet components made therefrom

Patent metadata

Field	Value
Publication number	US-9321897-B2
Application number	US-201214349572-A
Country	US
Kind code	B2
Filing date	Oct 25, 2012
Priority date	Oct 26, 2011
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

Provided is a thermoplastic resin composition that is free of discoloration defects, is resistant to the staining and deterioration caused by urine, fecal matter, detergents and so forth, exhibits an excellent tactile sensation, and also exhibits an excellent marring resistance and that is thus well suited for toilet components. Toilet components comprising this thermoplastic resin composition are also provided.
The thermoplastic resin composition comprises (A) a thermoplastic resin and, per 100 weight parts thereof, (B) 2 to 40 weight parts of an organic flame retardant, 0.1 to 2 weight parts of a component (D), and as desired, (C) 0.1 to 20 weight parts of a flame retardant synergist, wherein the component (D) satisfies the following condition:
condition: the component (D) is at least one compound selected from the group consisting of polyolefin-based waxes, alcohols, carboxylic acids, and esters, and having a melting point of not more than 100° C. and an HLB value of not more than 5.
The toilet components and so forth comprise this thermoplastic resin composition.

First claim

The invention claimed is:

1. A thermoplastic resin composition, consisting of:
(A) a thermoplastic resin, per 100 weight parts thereof;
(B) 2 to 40 weight parts of an organic flame retardant;
0.1 to 2 weight parts of a component (D);
optionally (C) a flame retardant synergist; and
optionally (E) other additives,
wherein
the component (D) is at least one compound selected from the group consisting of a polyolefin-based wax, an alcohol, a carboxylic acid, and an ester, and the component (D) has a melting point of not more than 100° C. and an HLB value of not more than 5,
wherein
the carboxylic acid is at least one selected from the group consisting of unsaturated carboxylic acids, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, isopropyl acrylate, isopropyl methacrylate, n-butyl acrylate, n-butyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, lauryl acrylate, lauryl methacrylate, stearyl acrylate, stearyl methacrylate, monomethyl maleate, monoethyl maleate, diethyl maleate, monomethyl fumarate, glycidyl acrylate and glycidyl methacrylate, and
the ester is at least one selected from the group consisting of are mono- and diesters of glycerol with fatty acids, mono-, di and triesters of sorbitan with fatty acids, and pentaerythritol esters of fatty acids, and

the other additives (E) are at least one selected from the group consisting of nucleating agents, molecular weight modifiers, foaming agents, pigments, dispersing agents, ultraviolet absorbers, antioxidants, static inhibitors, neutralizing agents, metal deactivators, stabilizers, antimicrobials, inorganic fillers and rubbery components.

2. The thermoplastic resin composition according to claim 1 , wherein
the organic flame retardant (B) is a halogen-type flame retardant, and
the thermoplastic resin composition comprises (C) 0.1 to 20 weight parts of the flame retardant synergist per 100 weight parts of the thermoplastic resin (A).

3. The thermoplastic resin composition according to claim 1 , wherein the organic flame retardant (B) is a brominated flame retardant.

4. The thermoplastic resin composition according to claim 2 , wherein the flame retardant synergist (C) is an antimony compound.

5. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin (A) is a polypropylene-based resin.

6. The thermoplastic resin composition according to claim 5 , wherein the polypropylene-based resin is a propylene-α-olefin block copolymer or propylene-α-olefin random copolymer that has a melt flow rate of 1.0 to 150 g/10 minutes at a temperature of 230° C. and a load of 2.16 kg and a non-propylene α-olefin content of 1 to 30 weight %.

7. The thermoplastic resin composition according to claim 1 , wherein the component (D) is a fatty acid ester that has a molecular weight of 350 to 2,000.

8. An injection-moldable thermoplastic resin composition, comprising: the thermoplastic resin composition according to claim 1 .

9. A toilet component obtained by a process comprising: molding the injection-moldable thermoplastic resin composition according to claim 8 .

10. The thermoplastic resin composition according to claim 2 , wherein the organic flame retardant (B) is a brominated flame retardant.

11. The thermoplastic resin composition according to claim 1 , consisting of the (A) a thermoplastic resin, the organic flame retardant (B), the component (D), the flame retardant synergist (C), and the other additives (E).

12. The thermoplastic resin composition according to claim 1 , consisting of the (A) a thermoplastic resin, the organic flame retardant (B), and the component (D).

13. The thermoplastic resin composition according to claim 1 , consisting of the (A) a thermoplastic resin, the organic flame retardant (B), the component (D), and the flame retardant synergist (C).

Assignees

• Japan Polypropylene Corp

Inventors

• KABEYA Masayuki
• Yoshida Toshihiro
• Imamura Itsushi

Classifications

• C08K3/016

  Flame-proofing or flame-retarding additives · CPC title

• B29C45/0001

  characterised by the choice of material · CPC title

• A47K13/02

  of plastic materials · CPC title

• E03D11/02

  Water-closet bowls (auxiliary chambers with connections to flushing water for bowl-cleaning utensils E03D9/06; modified for using upwardly-directed sprays E03D9/08; seats or covers A47K13/00 ){; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl (parts or details of bowls E03D11/13)} · CPC title

• C08K5/04

  Oxygen-containing compounds {(C08K5/0091 takes precedence)} · CPC title