Sealing agent and lubricant for medium-pressure and high-pressure autoclaves

US4409187A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Armin Kohler · Ingolstadt, DE
• Herbert Schuster · Grafing, DE
• Rudi Renner · Bensberg, DE

Key dates

• Filing date: Mar 6, 1981
• Grant date: Oct 11, 1983
• Expiry date: Mar 6, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/50
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

In an autoclave containing a sealing agent and/or lubricant the improvement wherein said sealing agent or lubricant is a polyether-polyol which has an average OH-functionality of 5.0 to 7.0 and an average OH number of 250 to 500 prepared by reacting a mixture of sucrose and at least one other starting molecule chosen from the group comprising PA0 (a) polyhydric alcohols with an OH-functionality of less than 8, PA0 (b) monoamines or polyamines which contain at least 2 hydrogen atoms bonded to the amino nitrogen and PA0 (c) water, with ethylene oxide and/or propylene oxide.