The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 1978
Filed:
Dec. 06, 1977
Applicant:
Inventor:
Jorgen Petersen, Sundsvall, SE;
Assignee:
KemaNobel AB, Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E08J / ;
U.S. Cl.
CPC ...
521 56 ; 526 80 ;
Abstract
This invention relates to a process for production of expandable thermoplastic beads with improved yield and with improved expandability. The process involves maintaining the polymerization vessel full of liquid at a certain pressure or with a gradually increased outside pressure on the reaction media.