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:
Jul. 30, 2002
Filed:
Feb. 01, 2001
Applicant:
Inventors:
Yoshihisa Tajima, Fuji, JP;
Hidetoshi Okawa, Fuji, JP;
Assignee:
Polyplastics Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 6/102 ;
U.S. Cl.
CPC ...
C08L 6/102 ;
Abstract
To provide polyacetal which has excellent shock resistance, rigidity and creep resistance as essential properties of the polymer and makes a high flowability and an excellent molding property upon molding possible by improving the thermal stability. In the manufacture of a polyacetal copolymer by a copolymerization of 100 parts by weight of trioxane (a) with 0.05-20 parts by weight of a cyclic ether compound (b) which is copolymerizable with trioxane and 0.001-10 parts by weight of a mono-functional glycidyl compound (c), the mono-functional glycidyl compound (c) having a chlorine content of not more than 0.3% by weight is used.