Patent · US Expired

Method for making block-resistant soft polymer beads

US4463032A · kind A · utility

10Cited by

7References

14Claims

0Family size

Assignee

Rohm Co., Ltd. · JP

Inventors

Peter J. Arndt · Seeheim-Jugenheim, DE
Werner Siol · Pfungstadt, DE
Walter Ludwig · Bensheim, DE
Franz Wenzel · Darmstadt, DE

Key dates

Filing date	Dec 9, 1982
Grant date	Jul 31, 1984
Priority date	—
Expiry date	Dec 9, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2998
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

What are disclosed are a method for making non-blocking soft polymer beads by applying an adherent polymer deposit on the beads, said deposited polymer having a glass transition temperature at least 10.degree. C. higher than the glass transition temperature of the soft polymer beads, which latter temperature is below 70.degree. C., and non-blocking soft polymer beads made by this method.

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