GB2151237A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Intumescent coating composition
Assignee: BP PLC
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Filing: 1984-12-05
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Granted: —
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Expires: 2004-12-05
Abstract
Abstract An intumescent composition suitable for use as a coating comprises as essential components:- (A) a chlorinated polymer which is a chlorinated rubber or a chlorinated polyalkylene (B) a phenol-formaldehyde novalak resin and (C) a plasticiser for the chlorinated polymer which is a chlorinated plasticiser or a phosphorous-containing plasticiser. The composition forms flexible, glossy coatings which are relatively water insoluble.
Inventors
- 👤 John Groves Dolden
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-30 09:09
CPC Classifications
C; C09; C09D; C09D115/00; C09D115/02; C09D123/00; C09D123/26; C09D123/28; C09D5/00; C09D5/18; C09D5/185
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
39 words
An intumescent composition comprising as essential components;
(A) a chlorinated polymer which is a chlorinated rubber or a chlorinated polyalkylene,
(B) a phenol-formaldehyde novolak resin and
(C) a plasticiser for the chlorinated polymerwhich is a chlorinated plasticiserora phosphorous-containing plasticiser.
Claim 2
Dependent Claim
39 words
An intumescent composition comprising as essential components;
(A) a chlorinated polymer which is a chlorinated rubber or a chlorinated polyalkylene,
(B) a phenol-formaldehyde novolak resin and
(C) a plasticiser for the chlorinated polymerwhich is a chlorinated plasticiserora phosphorous-containing plasticiser.
Claim 3
Dependent Claim
66 words
A composition as claimed in claim 1 in which the proportions of the essential components are as follows;
(A) 40 to 90 parts by weight of the chlorinated polymer,
(B) 5 to 55 parts by weight of the phenol-formaldehyde novolak resin
(C) 5 to 25 parts by weight of the plasticiser and the ratio of the chlorinated polymer to the phenol-formaldehyde resin is at least 1:1.
Claim 4
Dependent Claim
51 words
A composition as claimed in claim 2 in which the proportions of the essential components are as follows;
(A) 60 to 80 parts by weight of the chlorinated polymer,
(B) 10 to 30 parts by weight of the phenol-formaldehyde novolak resin
(C) 10 to 20 parts by weight of the plasticiser.
Claim 5
Dependent Claim
29 words
A composition as claimed in any of claims 1 to 3 in which the ratio of chlorinated polymer to phenol-formaldehyde novolak resin is in the range 1:1 to 5:1.
Claim 6
Dependent Claim
38 words
A composition as claimed in any of claims 1 to 4 in which the chlorinated polymer has a number average molecular weight of from 10,000 to 100,000 and a chlorine content of from 30 to 70% by weight.
Claim 7
Dependent Claim
32 words
A composition as claimed in any of claims 1 to 5 in which the chlorinated polymer is a chlorinated synthetic rubber having a chlorine content of from 60 to 65% by weight.
Claim 8
Dependent Claim
30 words
A composition as claimed in any of claims 1 to 6 in which the phenol-formaldehyde novolak resin is prepared from a phenol substituted with a C1 to C10 alkyl group.
Claim 9
Dependent Claim
19 words
A composition as claimed in claim 7 in which the phenol is substituted with a branched chain alkyl group.
Claim 10
Dependent Claim
15 words
A composition as claimed in claim 8 in which the alkyl substituted phenol is p-isobutyl-phenol.
Claim 11
Dependent Claim
55 words
A composition as claimed in any of claims 1 to 9 in which the plasticiser is selected from the group comprising a chlorinated paraffin wax having a molecular weight of from 400 to 1200 and a chlorine content of from 30 to 70% by weight, triphenyl phosphites, triphenyl phosphates, tricresyl phosphates, and alkyl phenyl phosphates.
Claim 12
Dependent Claim
44 words
A composition as claimed in any of claims 1 to 10 in which the essential components are dissolved or dispersed in a solvent, the amount of solvent being from 40 to 150 parts by weight per hundred parts by weight of the essential components.
Claim 13
Dependent Claim
34 words
A composition as claimed in any of claims 1 to 11 which also comprises from 10 to 40% by weight of a filler based on the total weight of filler and the essential components.
Claim 14
Dependent Claim
35 words
A composition as claimed in claim 12 in which the filler is selected from the group comprising calcium carbonate, alumina trihydrate and zinc borate and has an average particle size of less than 10 microns.
Claim 15
Dependent Claim
19 words
A composition as claimed in claim 12 or claim 13 comprising from 15 to 25% by weight of filler.
Claim 16
Dependent Claim
27 words
A composition as claimed in any of claims 1 to 12 which also comprises magnesium ammonium phosphate, magnesium oxide, melamine phosphate or ammonium polyphosphate as thermal stabilisers.
Claim 17
Dependent Claim
31 words
A composition as claimed in any of claims 12 to 14 in which the total amount of fillers and other additives is less than the total weight of the essential components.
Claim 18
Dependent Claim
31 words
A composition as claimed in claim 15 in which the total amount of fillers and other additives is less than 60 parts by weight per hundred parts of the essential components.
Claim 19
Dependent Claim
10 words
A composition substantially as described with reference to the Examples.
Claim 20
Dependent Claim
10 words
A composition substantially as described with reference to the Examples.
References Cited (Backward Citations)
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