Patent · US Active

Method for the vacuum-assisted production of a PUR/PIR foam body

US9950454B2 · kind B2 · utility

0Cited by

6References

12Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Reinhard Albers · Leverkusen, DE
Patrick Klasen · Vettweiß, DE
Stephanie Vogel · Langenfeld, DE

Key dates

Filing date	Jul 29, 2013
Grant date	Apr 24, 2018
Priority date	—
Expiry date	Oct 27, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/1376
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a method for producing a PUR/PIR foam body, comprising the steps of providing a mold adapted for applying an underpressure to the interior of the mold; introducing a reaction mixture comprising an isocyanate-reactive component A and an isocyanate B into the mold, and applying an underpressure to the interior of the mold, so the underpressure acts on the introduced reaction mixture. The underpressure is applied to the interior of the mold no later than the reaction mixture has started to set in the mold, and the isocyanate index of the reaction mixture is ≥300.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.