Lubricant composition for plastic processing

Patent metadata

Field	Value
Publication number	US-11261397-B2
Application number	US-201816759933-A
Country	US
Kind code	B2
Filing date	Sep 10, 2018
Priority date	Nov 1, 2017
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

Provided is a lubricant composition for plastic working which lubricant composition is excellent in lubricity and mold releasability. The lubricant composition for plastic working which lubricant composition contains: (a) silica; and (b) an alkali metal salt of an organic acid, a weight ratio of (b) the alkali metal salt of the organic acid to (a) the silica (a weight of (b)/a weight of (a)) being not less than 2, is used.

First claim

The invention claimed is:

1. A lubricant composition for plastic working, comprising:
(a) silica;
(b) an alkali metal salt of an organic acid; and
(c) a water-soluble polymer,
a weight ratio of (b) the alkali metal salt of the organic acid to (a) the silica (a weight of (b)/a weight of (a)) being not less than 2;
(b) the alkali metal salt of the organic acid is an alkali metal salt of an aliphatic carboxylic acid and/or an alkali metal salt of an aromatic carboxylic acid,
wherein (a) the silica is non-hollow silica, and
the lubricant composition for plastic working is a non-emulsion composition.

2. The lubricant composition for plastic working as set forth in claim 1 , further comprising (d) talc.

3. The lubricant composition for plastic working as set forth in claim 1 , further comprising (e) a nonionic surfactant.

4. The lubricant composition for plastic working as set forth in claim 1 , further comprising (f) water.

5. The lubricant composition for plastic working as set forth in claim 2 , wherein a weight ratio of (b) the alkali metal salt of the organic acid to (a) the silica and (d) the talc (the weight of (b)/{the weight of (a)+a weight of (d)}) is not less than 2.

6. A lubricant composition for plastic working comprising:
(a) silica;
(b) an alkali metal salt of an organic acid;
(c) a water-soluble polymer
(e) a nonionic surfactant; and
(f) water,
a weight ratio of (b) the alkali metal salt of the organic acid to (a) the silica (a weight of (b)/a weight of (a)) being not less than 2;
the lubricant composition for plastic working is a non-emulsion composition;
(b) the alkali metal salt of the organic acid is an alkali metal salt of an aliphatic carboxylic acid and/or an alkali metal salt of an aromatic carboxylic acid,
wherein (a) the silica is non-hollow silica, and
with respect to 100% by weight of the lubricant composition for plastic working,
an amount of (a) the silica is 0.5% by weight to 8% by weight;
an amount of (b) the alkali metal salt of the organic acid is 15% by weight to 40% by weight;
an amount of (c) a water-soluble polymer is 0.02% by weight to 30% by weight;
an amount of (e) the nonionic surfactant is 0.01% by weight to 5% by weight; and
a rest is (f) the water.

7. The lubricant composition for plastic working as set forth in claim 6 , further comprising:
(d) talc,
wherein with respect to 100% by weight of the lubricant composition for plastic working,
an amount of (d) the talc is 0.1% by weight to 10% by weight.

8. The lubricant composition for plastic working as set forth in claim 7 , wherein
a weight ratio of (b) the alkali metal salt of the organic acid to (a) the silica and (d) the talc (the weight of (b)/{the weight of (a)+a weight of (d)}) is not less than 2.

Assignees

• Moresco Corp

Inventors

• Hamashima Kentaro

Classifications

• C10M2207/142

  polycarboxylic · CPC title

• C10N2040/246

  Iron or steel · CPC title

• C10M2209/12

  Polysaccharides, e.g. cellulose, biopolymers · CPC title

• C10N2030/06

  Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title

• C10M2201/105

  Silica · CPC title