PATENT CLAIM ANALYSIS

Application Number: 16137400
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-03
Patent Classification: ["523", "429000"]

Abstract:
A Formula of a phosphorous fire-retardant hardener having fire-retardant and heat-resistant properties as well as a low-dielectric constant. With a preparation of glass-fiber laminated board, the hardener meets UL-94V fire-retardant requirements and has a dielectric constant 5 of 4.0 (1 GHz).

Claim (Index 2):
A process for the preparation of low-dielectric phosphoric phenolic resin hardener as claimed in  claim 1  includes following step (1) to step (4):\n in step (1): first to add 2,6 xylenol into methanal to react and generate it into phenolic resin (resol) under an alkaline catalytic condition, wherein 2,6 xylenol reacts with aldehyde by a mole rate of 1:1 to 1:5; such a reaction will be introduced from 20 min to 5 h at 30-70\u00b0 C., the preferential condition based upon a 2,6 xylenol and aldehyde reaction by a mole rate of 1:3 to 1:4 at 30-50\u00b0 C. for 20-40 minutes. The alkaline catalysis herein has no special limitations, as long as it is used to react with resol (phenolic resin compound), including alkaline catalysis obtained in market, for example, Na\u2014OH, K\u2014OH, CaCO 3 , K 2 CO 3 , and amine, consumption for alkaline catalysis is only 1-5% polyformaldehyde (92%). Then dissolve the resol into MIBK and neutralize them and separate the solution after washing it with water to remove the residual alkaline catalysis and aldehyde from the water layer; \n in step (2): in an acid catalysis, dip and add resol into bisphenol A to make it branch into bisphenol A. Dip and add resol into BPA under acid catalysis. The acid catalysis used in step (2) may include those obtained from market, for example, oxalic acid, MSA, PTSA, sulfur acid, hydrochloric acid, phosphor acid, etc., including resol reacting with bisphenol A with a mole ratio of 1:1 to 2:1. Such a reaction may occur at 2-6 h under an MIBK solvent system at 80\u02dc120\u00b0 C., and the consumption of the acid catalysis is 0.5 to 2% bisphenol A; \n in step (3): to branch BPA onto a phenolic resin product (hereinafter abbreviated BDP) about 2,6 xylenol resin (resol), and react with aldehyde and generate it into resol under an alkaline catalyst condition. Such an alkaline catalysis is better selected as a low boiling-point amine. After reaction, a vacuum pump is used to separate the water, so that this separates the residual amine and residual aldehyde and reduces resol self-polymerization at temperatures less than 75\u00b0 C. This step has a mole ratio of 1:1 to 1:3 about BPA branching into 2,6 xylenol phenolic resin (BDP) and aldehyde, with a reaction of 40-80\u00b0 C. for 1-6 h and a return rate of more than 99%; consumption of the alkaline catalysis is only 1-5% poly-formaldehyde (92%). Dissolve the resol obtained in Step (3) into solvent (PM) and then add it into DOPO for a reaction to generate it into low-dielectric phosphorous hardener (hereinafter abbreviated BDPD), resol (BDR) and with a DOPO mole ratio of 1:1 to 1:3 and a better reaction temperature of less than 135\u02dc145\u00b0 C.; the dipping and reaction lasts for 2-6 h; \n in step (4): once the reaction of step (3) is completed, analyze for less than 0.1% residual DOPO (by GPC gel chromatography), add melamine formaldehyde into the BDPD obtained from Step (3) at 145\u00b0 C. to make it react with CH 2 OH residual resol (BDPD), and branch it onto the BDPD compound and generate it into low-cost low-dielectric phosphorous hardener. Such a melamine formaldehyde and bisphenol A has a relative mole ratio of 0.05:1 to 0.5:1.0 and reacts for 1 or 2 h; continue to raise the temperature to 185\u00b0 C. and react for 30 min to 1 h, and fully react with non-reacted CH 2 OH base grouping; the phosphor content of such a hardener is 5% to 9.5%, the preferential content is 6% to 9.5%, and the nitrogen content is 0% to 2.0%.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 97.0
- Lexical Diversity: 1.35294
- Patent Class: 523.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14223300', '14312703', '14821783', '10633890', '12724030']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7746809523924103
- 35 USC 102 Novelty (BERT): 0.5088825663732519
- Combined Prediction Score: 0.7481011137904945
- Mean Citation Score: 249.541534
- Max Citation Score: 262.70737
- Similarity Product: 172.99930558934452

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

Dataset: test