Method for producing thermoplastic resin
US10654972B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Nov 2, 2016 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Nov 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound. In this production method, the dihydroxy compound comprises a dihydroxy compound represented by the following formula (1), wherein the total weight of a compound represented by the following formula (A), a compound represented by the following formula (B), and a compound represented by the following formula (C) in the dihydroxy compound is 1,500 ppm or less, based on 100 parts by weight of the dihydroxy compound represented by the formula (1):
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.