Resin compositions having excellent antistatic properties

• US 5,714,534 A
• Filed: 10/05/1995
• Issued: 02/03/1998
• Est. Priority Date: 12/27/1993
• Status: Expired due to Fees

• Current Assignee: Mitsui Chemicals Incorporated (Mitsui Chemicals)
• Original Assignee: Mitsui Toatsu Chemicals Incorporated (Mitsui Chemicals)
• Inventors: Kato, Mitsuyoshi, Ichikawa, Kouzo, Amemiya, Hideo, Kojima, Nobumoto, Okajima, Shinji, Sekido, Takayoshi
• Primary Examiner(s): REDDICK, MARIE L
• Application Number:
  US08/539,749
• Time in Patent Office: 852 Days
• Field of Search: 524/432, 524/433, 524/156, 524/161
• US Class Current: 524/156
• CPC Class Codes: C08K 5/0075 Antistatics
• CPC Class Codes: C08L 25/02 Homopolymers or copolymers of hydrocarbons
• CPC Class Codes: C08L 25/06 Polystyrene
• CPC Class Codes: C08L 25/14 with unsaturated esters
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 33/06 of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
• CPC Class Codes: C08L 71/02 Polyalkylene oxides

Abstract

A resin composition having excellent antistatic properties is provided which comprises (A) 100 parts by weight of a styrene resin, (B) 3 to 35 parts by weight of a polyethylene oxide, (C) 0.1 to 10 parts by weight of a styrene-acrylonitrile-hydroxyalkyl acrylate copolymer and/or a styrene-acrylonitrile-hydroxyalkyl methacrylate copolymer, (D) 4 to 100 parts by weight of a (meth)acrylic ester polymer, and/or an oxide selected from the group consisting of titanium oxide, zinc oxide and magnesium oxide, the oxide being present in an amount of 0.7 to 5 parts by weight per 100 parts by weight of the combined amount of components (A) and (B), and (E) a surface-active agent comprising a specified sulfonic acid salt or alkylsulfuric acid salt, the surface-active agent being present in an amount of 0.4 to 5 parts by weight per 100 parts by weight of the combined amount of components (A), (B), (C) and (D). This resin composition can be used for general household articles including, for example, wardrobe cases.

Claims

1. A resin composition having excellent antistatic properties which comprises

(A) 100 parts by weight of a styrene resin;

(B) 3 to 35 parts by weight per 100 parts by weight of (A) of a polyethylene oxide having a viscosity-average molecular weight of 15,000 to 1,500,000;

(C) 0.5 to 10 parts by weight per 100 parts by weight of (A) of a styrene-acrylonitrile-hydroxyalkyl acrylate copolymer and/or a styrene-acrylonitrile-hydroxyalkyl methacrylate copolymer different than the styrene resin of (A);

(D) 4 to 100 parts by weight per 100 parts by weight of (A) of a (meth)acrylic ester polymer; and

(E) a surface-active agent comprising a sulfonic acid salt of the formula ##STR2## where each of R¹ and R² represents a hydrogen atom or an alkyl group of 12 or less carbon atoms and X represents one or more alkali metal atoms selected from the group consisting of Na, Li and K, or an alkylsulfuric acid salt of the formula

space="preserve" listing-type="equation">R.sup.3 --OSO.sub.3 M

where R³ represents an alkyl group of 8 to 20 carbon atoms and M represents one or more ions selected from the group consisting of K, Na, and NH₄, the surface-active agent being present in an amount of 0.4 to 5 parts by weight per 100 parts by weight of the combined amount of components (A), (B), (C) and (D).

2. The resin composition as claimed in claim 1 which further comprises (F) a (poly)ethylene glycol having an average molecular weight of 62 to 1,200 calculated by OH values, the (poly)ethylene glycol being present in an amount of 0.05 to 5 parts by weight per 100 parts by weight of the combined amount of components (A), (B), (C) and (D).

3. A resin composition having excellent antistatic properties which comprises

(A) 100 parts by weight of a styrene resin;

(B) 3 to 35 parts by weight per 100 parts by weight of (A) of a polyethylene oxide having a viscosity-average molecular weight of 15,000 to 1,500,000;

(C) 0.5 to 10 parts by weight per 100 parts by weight of (A) of a styrene-acrylonitrile-hydroxyalkyl acrylate copolymer and/or a styrene-acrylonitrile-hydroxyalkyl methacrylate copolymer different than the styrene resin of (A);

(D) an oxide selected from the group consisting of titanium oxide, zinc oxide and magnesium oxide, the oxide being present in an amount of 0.7 to 5 parts by weight per 100 parts by weight of the combined amount of components (A) and (B); and

(E) a surface-active agent comprising a sulfonic acid salt of the formula ##STR3## where each of R¹ and R² represents a hydrogen atom or an alkyl group of 12 or less carbon atoms and X represents one or more alkali metal atoms selected from the group consisting of Na, Li and K, or an alkylsulfuric salt of the formula

space="preserve" listing-type="equation">R.sup.3 --OSO.sub.3 M

where R³ represents an alkyl group of 8 to 20 carbon atoms and M represents one or more ions selected from the group consisting of K, Na, and NH₄, the surface-active agent being present in an amount of 0.4 to 5 parts by weight per 100 parts by weight of the combined amount of components (A), (B), (C) and (D).

4. The resin composition as claimed in claim 3 which further comprises (F) a (poly)ethylene glycol having an average molecular weight of 62 to 1,200 calculated by OH values, the (poly)ethylene glycol being present in an amount of 0.05 to 5 parts by weight per 100 parts by weight of the combined amount of components (A), (B), (C) and (D).

5. A resin composition having excellent antistatic properties which comprises

(A) 100 parts by weight of a styrene resin;

(B) 3 to 35 parts by weight per 100 parts by weight of (A) of a polyethylene oxide having a viscosity-average molecular weight of 15,000 to 1,500,000;

(C) 0.5 to 10 parts by weight per 100 parts by weight of (A) of a styrene-acrylonitrile-hydroxyalkyl acrylate copolymer and/or a styrene-acrylonitrile-hydroxyalkyl methacrylate copolymer different than the styrene resin of (A);

(D₁) 4 to 100 parts by weight per 100 parts by weight of (A) of a (meth)acrylic ester polymer;

(D₂) and oxide selected from the group consisting of titanium oxide, zinc oxide and magnesium oxide, the oxide being present in an amount of 0.7 to 5 parts by weight per 100 parts by weight of the combined amount of components (A) and (B); and

(E) a surface-active agent comprising a sulfonic acid salt of the formula ##STR4## where each of R¹ and R² represents a hydrogen atom or an alkyl group of 12 or less carbon atoms and X represents one or more alkali metal atoms selected from the group consisting of Na, Li and K, or an alkylsulfuric salt of the formula

space="preserve" listing-type="equation">R.sup.3 --OSO.sub.3 M

where R³ represents an alkyl group of 8 to 20 carbon atoms and M represents one or more ions selected from the group consisting of K, Na, and NH₄, the surface-active agent being present in an amount of 0.4 to 5 parts by weight per 100 parts by weight of the combined amount of components (A), (B), (C) and (D).

6. The resin composition as claimed in claim 5 which further comprises (F) a (poly)ethylene glycol having an average molecular weight of 62 to 1,200 calculated by OH values, the (poly)ethylene glycol being present in an amount of 0.05 to 5 parts by weight per 100 parts by weight of the combined amount of components (A), (B), (C) and (D).