Electron beam curable resin composition, reflector resin frame, reflector, semiconductor light-emitting device, and molded article production method
US-2015361246-A1 · Dec 17, 2015 · US
Flame-retarded transparent polycarbonate compositions
US10934489B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10934489-B2 |
| Application number | US-201716330012-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 5, 2017 |
| Priority date | Sep 8, 2016 |
| Publication date | Mar 2, 2021 |
| Grant date | Mar 2, 2021 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A transparent composition comprising polycarbonate and a mixture of flame retardants, wherein the flame retardants are aryl phosphate ester of hydroquinone and tris(2,4,6-tribromophenoxy)-s-triazine.
First claim
Opening claim text (preview).
The invention claimed is: 1. A transparent composition comprising polycarbonate and a mixture of flame retardants, wherein the flame retardants are: (i) aryl phosphate ester of hydroquinone of Formula I: wherein each of R 1 , R 2 , R 3 and R 4 is phenyl and 1.0<n≤1.1; and (ii) tris (2, 4, 6-tribromophenoxy)-s-triazine of Formula II: wherein the concentration of the mixture of flame retardants is the range of 10% to 20% by weight based on the total weight of the composition, and the weight ratio (i):(ii) is in the range of 1:2 to 1:5. 2. The composition according to claim 1 , wherein the concentration of the mixture of flame retardants is in the range from 11% to 15% based on the total weight of the composition. 3. The composition according to claim 2 , wherein the weight ratio (i):(ii) is in the range of 1:3 to 1:4. 4. The composition according to claim 1 , which when tested according to ASTM D1746-97, light transmission of not less than 96%, is recorded; and, when in a form of a test specimen having thickness (D) D≤0.8 mm, it meets the UL 94 V-0 test requirements. 5. A molded article comprising the composition of claim 1 . 6. A transparent composition comprising polycarbonate and a mixture of flame retardants, wherein the flame retardants are: (i) aryl phosphate ester of hydroquinone of Formula I: wherein R 1 , R 2 , R 3 and R 4 each independently is aryl or alkyl-substituted aryl, optionally interrupted with heteroatoms, and n has an average value of from about 1.0 to about 2.0; and (ii) tris(2,4,6-tribromophenoxy)-s-triazine of Formula II: wherein said composition, when tested according to ASTM D1746-97, light transmission of not less than 96%, is recorded; and, when in a form of a test specimen having thickness (D) D≤0.8 mm, it meets the UL 94 V-0 test requirements.
Assignees
Inventors
Classifications
Transparent films; Clear coatings; Transparent materials · CPC title
Flame or fire retardant/resistant · CPC title
Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title
- C08K5/523Primary
with hydroxyaryl compounds · CPC title
containing cyanurate groups; Tautomers thereof · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10934489B2 cover?
- A transparent composition comprising polycarbonate and a mixture of flame retardants, wherein the flame retardants are aryl phosphate ester of hydroquinone and tris(2,4,6-tribromophenoxy)-s-triazine.
- Who is the assignee on this patent?
- Bromine Compounds Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08K5/523. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 02 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).