Blends of bisphenol a polycarbonate and polyesters
US6011124A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1997 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Dec 23, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/199
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are clear blends comprising: PA1 (A) from 1 to 99 percent by weight of a polycarbonate comprising a diol component comprising from 90 to 100 mol percent 4,4'-isopropylidenediphenol units and from 0 to 10 mol percent modifying diol units having 2 to 16 carbons, wherein the total mol percent of diol units is equal to 100 mol percent; and PA1 (B) from 1 to 99 percent by weight of a polyester comprising PA2 (a) a dicarboxylic acid component comprising from 80 to 100 mol percent dicarboxylic acid units selected from the group consisting of terephthalic acid units, isophthalic acid units, and mixtures thereof; and from 0 to 20 mol percent modifying dicarboxylic acid units having about 2 to 20 carbons, wherein the total mol percent of dicarboxylic acid units is equal to 100 mol percent; and PA2 (b) a glycol component comprising from 30 to 99 mol percent 2,2,4,4-tetramethyl-1,3-cyclobutanediol units, from 1 to 70 mol percent ethylene glycol units, and from 0 to 10 mol percent modifying glycol units having from 3 to 16 carbons, wherein the total mol percent of glycol units is equal to 100 mol percent; PA1 wherein the total units of said polyester is equal to 200 mol percent; where…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.