Reactive modifier of elastomeric comb copolymer for thermosetting resins and process for making the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 9, 1996
Issued Date -
N/A
app pub date -
Jul 6, 1993
filing date -
May 7, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reactive polymeric modifier to improve toughness and/or flexibility of thermosetting resins where the polymer has a comb configuration including a saturated polymeric backbone having reactive groups at each end and at least one pendent chain which is miscible with the thermosetting resin while it is uncured; the backbone being a polymeric chain of carbon-carbon linkages free of olefinic unsaturation, having a glass transition temperature Tg in the range from -100.degree. C. to 25.degree. C.; the reactive groups being reactive with the thermosetting resin, being positioned on both ends of the backbone, and comprising, on average, at least 1.2 but less than 2 reactive groups positioned so as to yield a substantially difunctionalized comb; the pendent chain or chains being linked to said backbone, being present in an amount in the range from 3% to 40% by weight of said comb copolymer, and having from 2 to 250 repeating units selected from the group consisting of polyester, polyether, polystyrene, and polymethacrylate; and, the comb polymer having a number average molecular weight in the range from 1,000 to 20,000, and a process for making the modifier.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully