PATENT CLAIM ANALYSIS

Application Number: 15749414
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["528", "412000"]

Abstract:
This invention provides a production method of a poly(carbonate-ether)polyol, comprising the steps of: performing a reaction between a carboxylic acid and an epoxide to obtain an intermediate, wherein the carboxylic acid has an acidity constant of 0.2 to 4; and performing a polymerization reaction between the intermediate and carbon dioxide under the action of a rare earth doped double metal cyanide of Zn 3 [Co(CN) 6 ] 2  to obtain a poly(carbonate-ether)polyol. In the production method of the poly(carbonate-ether)polyol provided by this invention, a carboxylic acid having a suitable acidity constant is used as an initiator and an epoxide is firstly activated by using the carboxylic acid, and polyethers having different molecular weights generated in situ after activation are used as chain transfer agents to be involved in the polymerization reaction between carbon dioxide and the epoxide under the action of a rare earth doped double metal cyanide Zn 3 [Co(CN) 6 ] 2 . This production method of the poly(carbonate-ether)polyol has a shorter reaction time, and the content of a byproduct propylene carbonate in the product is relatively low.

Claim (Index 14):
The method according to  claim 1 , wherein the produced poly(carbonate-ether)polyol comprises a byproduct propylene carbonate having a content of 4.7% to 8.3% by mass.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 86.0
- Lexical Diversity: 2.31522
- Patent Class: 528.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14484490', '13394267', '14915668', '13406065', '15437729']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7559479816890398
- 35 USC 102 Novelty (BERT): 0.4934293463209329
- Combined Prediction Score: 0.7296961181522291
- Mean Citation Score: 211.004644
- Max Citation Score: 234.22185
- Similarity Product: 165.59274390344916

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test