Oil-absorbent polymer and use therefor

• US 5,374,600 A
• Filed: 09/27/1993
• Issued: 12/20/1994
• Est. Priority Date: 01/29/1990
• Status: Expired due to Fees

• Current Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
• Original Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
• Inventors: Inaoka, Toru, Uno, Toru, Hozumi, Yoshiyuki, Rakutani, Kenji, Gomi, Tomoki, Goto, Takakiyo
• Primary Examiner(s): Schofer, Joseph L.
• Assistant Examiner(s): Cheng, Wu C.
• Application Number:
  US08/126,731
• Time in Patent Office: 449 Days
• Field of Search: 526/328, 526/328.5, 502/402
• US Class Current: 502/402
• CPC Class Codes: A01K 97/045 Preparation of bait; Ingredients
• CPC Class Codes: A01N 25/10 Macromolecular compounds
• CPC Class Codes: B01D 15/00 Separating processes involving the treatment of liquids with solid sorbents using liquid sorbents B01D11/00; ion exchange processes or materials, sorbent materials in general B01J, e.g. sorbents for chromatography B01J20/281; for investigating or analysing materials G01N30/00; Apparatus therefor
• CPC Class Codes: B01D 17/0202 by ab- or adsorption
• CPC Class Codes: B01J 20/26 Synthetic macromolecular compounds
• CPC Class Codes: B41M 5/132 Chemical colour-forming components; Additives or binders therefor
• CPC Class Codes: B41M 5/3331 Macromolecular compounds
• CPC Class Codes: C02F 1/681 by addition of solid materials for removing an oily layer on water
• CPC Class Codes: C08F 2/44 Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
• CPC Class Codes: C08F 220/1812 C12-(meth)acrylate, e.g. lauryl (meth)acrylate

Abstract

A swellable oil-absorbent agent formed of cross-linked polymer (P) obtained by polymerizing a monomer component comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth)acrylate the alkyl group of which has 10 to 16 carbon atoms and possessing one polymerizable unsaturated group in the molecular unit thereof and 0.001 to 10% by weight of a cross-linkable monomer possessing at least two polymerizable unsaturated groups in the molecular unit thereof (providing that the total of the amount of the polymerizable monomer and that of the cross-linkable monomer is 100% by weight).

Claims

1. An oil-absorbent pack which comprises particles of cross-linked polymer (P) packed in a bag made of a hydrophobic porous cloth, wherein said particles absorb oil which passes through said cloth from an outer side to an inner side of said pack and said cross-linked polymer (P) is obtained by polymerizing a monomer component (A) comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth) acrylate, the alkyl group of which has 10 to 16 carbon atoms and having one polymerizable unsaturated group in the molecular unit thereof and 0.001 to 10% by weight of a cross-linkable monomer (B) having at least two polymerizable unsaturated groups in the molecular unit thereof, providing that the total of the amount of the polymerizable monomer and that of the cross-linkable monomer is 100% by weight.

2. An oil-absorbent pack according to claim 1, wherein particle diameter of said particles is 0.01 to 2 mm.