US4128709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylate-based polymers and their use as flameproofing agents
Assignee: Dynamit Nobel AG
•
Filing: 1976-06-17
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Granted: 1978-12-05
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Expires: 1996-06-17
Abstract
Abstract A polymer having as a component thereof a moiety corresponding to a monomer having the following formula ##STR1## WHEREIN N = 0 OR 1, X is bromine, chlorine or a mixture thereof and R represents hyrogen or methyl, a method of preparing the same and the use of such a polymer, including a copolymer thereof in a plastic composition containing a normally flammable plastic.
Inventors
- 👤 Norbert Vollkommer
- 👤 Egon N. Petersen
- 👤 Herbert Klinkenberg
- 👤 Werner Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:53
CPC Classifications
C; C08; C08L; C08L101/00; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/22; C08F20/26; C08F20/30; C08L67/00; C08L67/02; C08L69/00; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
54 words
A solid homopolymer of a monomer having the formula ##STR12## wherein n = 0 or 1, X is bromine or chlorine, R is hydrogen or methyl, said polymer having a molecular weight between 1 × 10 3 and 10 × 10 6 , said molecular weight being determined by gel permeation chromatography in tetrahydrofuran.
Claim 2
Dependent Claim
54 words
A solid homopolymer of a monomer having the formula ##STR12## wherein n = 0 or 1, X is bromine or chlorine, R is hydrogen or methyl, said polymer having a molecular weight between 1 × 10 3 and 10 × 10 6 , said molecular weight being determined by gel permeation chromatography in tetrahydrofuran.
Claim 3
Dependent Claim
10 words
A polymer according to claim 1 wherein n = 0.
Claim 4
Dependent Claim
10 words
A polymer according to claim 2 wherein X is bromine.
Claim 5
Dependent Claim
15 words
A polymer according to claim 2 wherein X is a mixture of bromine and chlorine.
Claim 6
Dependent Claim
11 words
A polymer according to claim 2 which is cross-linked and infusible.
Claim 7
Dependent Claim
23 words
A polymer according to claim 1 having a molecular weight between 5·10 3 and 5·10 6 determined by gel permeation chromatography in tetrahydrofuran.
Claim 8
Dependent Claim
20 words
A polymer according to claim 1 having on the phenyl radical 4-5 bromine atoms and 0 or 1 chlorine atoms.
Claim 9
Dependent Claim
18 words
A polymer according to claim 1 having on the phenyl radical 3-4 bromine atoms and 0-1 chlorine atoms.
Claim 10
Dependent Claim
13 words
A polymer according to claim 1 wherein said monomer has the formula ##STR13##
Claim 11
Dependent Claim
13 words
A polymer according to claim 1 wherein said monomer has the formula ##STR14##
Claim 12
Dependent Claim
13 words
A polymer according to claim 1 wherein said monomer has the formula ##STR15##
Claim 13
Dependent Claim
11 words
A polymer according to claim 1 wherein said monomer is pentabromobenzylacrylate.
Claim 14
Dependent Claim
11 words
A polymer according to claim 1 wherein said monomer is pentachlorobenzylacrylate.
Claim 15
Dependent Claim
11 words
A polymer according to claim 1 wherein said monomer is pentabromobenzylmethacrylate.
Claim 16
Dependent Claim
11 words
A polymer according to claim 1 wherein said monomer is pentachlorobenzylmethylacrylate.
Claim 17
Dependent Claim
10 words
A polymer according to claim 1 wherein n = 1.
Claim 18
Dependent Claim
13 words
A polymer according to claim 16 wherein said polymer is thermoplastic and uncrosslinked.
Claim 19
Dependent Claim
12 words
A polymer according to claim 17 wherein said monomer is pentabromobenzyl acrylate.
Claim 20
Dependent Claim
11 words
A polymer according to claim 17 wherein said monomer is pentabromobenzylmethacrylate.
Claim 21
Dependent Claim
44 words
A process for preparing the polymer of claim 1 which comprises contacting a monomer of the formula ##STR16## wherein n = 0 or 1, X is bromine or chlorine, R is hydrogen or methyl with a radical polymerization catalyst under radical polymerization reaction conditions.
Claim 22
Dependent Claim
19 words
A process according to claim 20 wherein said reaction conditions include a temperature of between 0° and 150° C.
Claim 23
Dependent Claim
23 words
A process according to claim 21 wherein the radical polymerization catalyst is an organic peroxide, an inorganic peroxide or an aliphatic azo compound.
Claim 24
Dependent Claim
28 words
A process according to claim 22 wherein said radical polymerization catalyst is selected from the group consisting of dibenzoyl peroxide, dicumyl peroxide, potassium peroxydisulfate and azodiisobutyric acid nitrile.
Claim 25
Dependent Claim
15 words
A flame-retardant plastic composition comprising a normally flammable plastic and the polymer of claim 1.
Claim 26
Dependent Claim
21 words
A flame-retardant plastic composition according to claim 24 wherein the polymer of claim 1 contains 35 to 85% chlorine and/or bromine.
Claim 27
Dependent Claim
24 words
A flame-retardant plastic composition according to claim 24 wherein the polymer of claim 1 is present in an amount 5 to 20 weight percent.
Claim 28
Dependent Claim
26 words
A flame-retardant plastic composition according to claim 26 wherein said polymer is present in said plastic composition in an amount of 7 to 12% by weight.
References Cited (Backward Citations)
US2855434A
Cited
US2891092A
Cited
US3162613A
Cited
US3210326A
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US3538149A
Cited
US3639305A
Cited
US3629197A
Cited
US3649668A
Cited
US3891695A
Cited
US3817913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |