Randomly branched aromatic polycarbonate from triphenol
First Claim
Patent Images
1. A composition comprising a high molecular weight, thermoplastic randomly branched polycarbonate derived from an aromatic dihydric phenol, a carbonate precursor, and a branching component in an amount sufficient to produce a thermoplastic randomly branched polycarbonate which is substantially free of crosslinking;
- said randomly branched polycarbonate having an intrinsic viscosity of about 0-3 to 1.0 dl/g in methylene chloride at 25°
C. wherein the branching component comprises one or more compounds of the formula ##STR3## wherein X1, X2, X3, Y1, Y2, and Y3 are independently selected from the group consisting of hydrogen, chlorine, bromine, lower alkyl of from 1 to 6 carbon atoms;
R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, lower alkyl of from 1 to 6 carbon atoms; and
n is an integer of 0, 1, 2, 3, 4, 5 and 6;
m and r are integers of 0, 1 or 2 with the proviso that the sum of n+m+r is at least 1 and mixtures of said triphenolic compounds.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention relates to triphenolic compounds that may be used as branching agents for the manufacture of novel randomly branched polycarbonates. The polycarbonates are useful for the fabrication of blow molded articles.
-
Citations
4 Claims
-
1. A composition comprising a high molecular weight, thermoplastic randomly branched polycarbonate derived from an aromatic dihydric phenol, a carbonate precursor, and a branching component in an amount sufficient to produce a thermoplastic randomly branched polycarbonate which is substantially free of crosslinking;
- said randomly branched polycarbonate having an intrinsic viscosity of about 0-3 to 1.0 dl/g in methylene chloride at 25°
C. wherein the branching component comprises one or more compounds of the formula ##STR3## wherein X1, X2, X3, Y1, Y2, and Y3 are independently selected from the group consisting of hydrogen, chlorine, bromine, lower alkyl of from 1 to 6 carbon atoms;
R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, lower alkyl of from 1 to 6 carbon atoms; and
n is an integer of 0, 1, 2, 3, 4, 5 and 6;
m and r are integers of 0, 1 or 2 with the proviso that the sum of n+m+r is at least 1 and mixtures of said triphenolic compounds. - View Dependent Claims (2, 3, 4)
- said randomly branched polycarbonate having an intrinsic viscosity of about 0-3 to 1.0 dl/g in methylene chloride at 25°
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeGeneral Electric Company
-
Original AssigneeGeneral Electric Company
-
InventorsMark, Victor, Hedges, Charles V.
-
Primary Examiner(s)ANDERSON, HAROLD
-
Application NumberUS06/359,987Time in Patent Office606 DaysField of Search528/204, 528/196US Class Current528/204CPC Class CodesC08G 64/14 containing a chain-terminat...C08G 64/1616 containing a chain-terminat...
