Roller for cleaning phonograph records

• US 4,128,909 A
• Filed: 08/05/1977
• Issued: 12/12/1978
• Est. Priority Date: 09/07/1976
• Status: Expired due to Term

• Current Assignee: Nagaoka & Co., Ltd., Shin-Etsu Chemical Company Limited
• Original Assignee: Nagaoka & Co., Ltd., Shin-Etsu Chemical Company Limited
• Inventors: Imai, Kiyoshi, Kawabe, Hirokazu, Miyakoshi, Masanobu
• Primary Examiner(s): Blum, Daniel
• Application Number:
  US05/822,276
• Time in Patent Office: 494 Days
• Field of Search: 15/104 R, 15/104 A, 15/256.52, 29/132, 274/47
• US Class Current: 15/104.002
• CPC Class Codes: C08G 77/12 containing silicon bound to hydrogen C08G77/045 takes precedence
• CPC Class Codes: C08G 77/14 containing silicon bound to oxygen-containing groups C08G77/045 takes precedence
• CPC Class Codes: C08G 77/16 to hydroxyl groups
• CPC Class Codes: C08G 77/18 to alkoxy or aryloxy groups
• CPC Class Codes: C08G 77/20 containing silicon bound to unsaturated aliphatic groups C08G77/045 takes precedence
• CPC Class Codes: C08G 77/70 Siloxanes defined by use of the MDTQ nomenclature
• CPC Class Codes: C08L 83/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: G11B 3/589 before or after transducing operation
• CPC Class Codes: Y10S 528/901 Room temperature curable silicon-containing polymer

Abstract

The Gramophone record cleaner proposed is of the roller type having a sticky surface formed of a rubbery organopolysiloxane elastomer having a relatively low hardness and adapted to pick up dirt or dust and other contaminants from within the grooves of a record as the roller is passed over the record surface. The roller-type cleaners are superior in their easy performance of complete dirt removal in repeated operations, since the sticky surface of the roller once choked with contaminants can be cleaned simply by rinsing with water.

Claims

1. An improved Gramophone record cleaner of the roller type wherein at least one roller is rotatably supported by and between a pair of opposed, substantially parallel limbs on a handled bracket, the improvement comprising the roller having an outermost layer made of a rubbery organopolysiloxane elastomer having hardness not exceeding 40 as determined in accordance with Japanese Industrial Standard K 6301, the surface of the layer being sticky, the stickiness of the surface of the layer is in the range of 4 to 30 as determined by J. Dow'"'"'s rolling ball stick test, and said rubbery organopolysiloxane elastomer has a formulation comprising:

(a) a diorganopolysiloxane with a viscosity in the range from 100 to 500,000 centistokes at 25°

C. represented by the general formula ##STR3## where R is a monovalent hydrocarbon group free of aliphatic unsaturation, such as methyl and phenyl groups and m and n are each positive integers with the proviso that m/(m+n) is between 0.001 and 0.1,

(b) an organopolysiloxane with a viscosity not exceeding 10,000 centistokes at 25°

C., having 1.5 to 3 hydrogen atoms bonded directly to the silicon atoms per molecule, in an amount such that from 0.01 to 1.0 of the hydrogen atoms bonded directly to the silicon atoms are provided per vinyl group in component (a), and

(c) a catalytic amount of a platinum compound.

2. The roller-type cleaner as claimed in claim 1 wherein said outermost layer has a thickness in the range from 1 mm to 5 mm.

3. The roller-type cleaner as claimed in claim 1 wherein said rubbery organopolysiloxane elastomer has a compressive stress in the range from 0.05 to 8 kg/cm² at 25% compression.

4. In an improved Gramophone record cleaner of the roller type wherein at least one roller is rotatably supported by and between a pair of opposed, substantially parallel limbs on a handled bracket, the improvement comprising the roller having an outermost layer made of a rubbery organopolysiloxane elastomer having hardness not exceeding 40 as determined in accordance with Japanese Industrial Standard, K 6301, the surface of the layer being sticky, the stickiness of the surface of the layer is in the range of 4 to 30 as determined by J. Dow'"'"'s rolling ball stick test, and said rubbery organopolysiloxane elastomer has a formulation comprising:

(a) a diorganopolysiloxane with a viscosity in the range from 100 to 500,000 centistokes at 25°

C. represented by the general formula ##STR4## where R is a monovalent hydrocarbon group, such as methyl and phenyl groups and p is a positive integer, and

(b) an organosilane or an organopolysilozane having 2 to 4 hydrolyzable groups, such as alkoxy, acyloxy, aminoxy, amino, amido and oxime groups, per molecule in an account such that from 0.5 to 1.5 of the hydrolyzable groups are provided per hydroxy group in component (a).