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:
Oct. 11, 1983
Filed:
May. 26, 1982
Michael F Froix, Menlo Park, CA (US);
Rajal M Kusumgar, North Plainfield, NJ (US);
Celanese Corporation, New York, NY (US);
Abstract
A polymer blend comprising a first copolymer and a second copolymer and having improved impact resistance is provided. The first copolymer has recurring units which consist essentially of oxymethylene groups having the formula --OCH.sub.2 --interspersed with ##STR1## groups, where each R.sub.1 and R.sub.2 is selected from the group consisting of hydrogen, lower alkyl radicals, and halogen-substituted lower alkyl radicals, each R.sub.3 is selected from the group consisting of methylene, oxymethylene, lower alkyl and haloalkyl substituted methylene, and lower alkyl and haloalkyl substituted oxymethylene radicals, and n is an integer from zero to three, each lower alkyl radical having one to two carbon atoms. The oxymethylene units comprise approximately 85 to approximately 99.9 mole percent of the recurring units of the first copolymer. The second copolymer has recurring units which consist essentially of oxymethylene groups having the formula--OCH.sub.2 --interspersed with ##STR2## groups where R.sub.1, R.sub.2, R.sub.3, and n have the same meanings as the corresponding symbols used with regard to the first copolymer and where the selections made with regard to the second copolymer are independent of the selections made with regard to the first copolymer, the oxymethylene groups of the second copolymer comprising approximately 50 to approximately 75 mole percent of the recurring units of the second copolymer. The second copolymer comprises approximately 1.5 to approximately 40 weight percent of the blend.