GB2305667A - Bitumen-polymer compositions - Google Patents
Bitumen-polymer compositions Download PDFInfo
- Publication number
- GB2305667A GB2305667A GB9519736A GB9519736A GB2305667A GB 2305667 A GB2305667 A GB 2305667A GB 9519736 A GB9519736 A GB 9519736A GB 9519736 A GB9519736 A GB 9519736A GB 2305667 A GB2305667 A GB 2305667A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- adhesive composition
- bitumen
- styrene
- adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J195/00—Adhesives based on bituminous materials, e.g. asphalt, tar, pitch
Abstract
An adhesive composition comprises bitumen and styrene-butadiene block copolymer and optionally a tackifier, sulphur, stearic acid, zinc oxide and tetra-methyl thiuram disulphide. The bitumen and copolymer may be blended and then the copolymer is dynamically partially crosslinked. The adhesive may be used to form a waterproof membrane with the adhesive covered with a release paper sheet.
Description
PROCESS FOR PRODUCING ADHESIVE BITUMEN-POLYMER COMPOSITIONS
The present invention relates to a process for producing bitumen-polymer adhesive compositions and to the compositions obtainable by the process. In particular, the invention relates to a process for producing bitumen-polymer compositions containing styrene-diene block copolymers which compositions are suitable for use as pressure sensitive adhesives.
Bitumen-polymer compositions containing a low concentration of
Styrene-diene block copolymers are known. However, in order to obtain a stable blend having stable elastomeric properties, the bitumen for use in such compositions must be selected from a relatively narrow range of suitable bitumens.
It is an object of the present invention to provide a process for producing bitumen-polymer compositions containing a low concentration of styrene-diene block copolymers which process can use a wide range of bitumens. The thermoplastic compositions produced according to the process of the present invention have
improved tack, cohesive strength, low temperature flexibility, and heat stability.
According to the present invention a process for producing a bituminous composition containing a styrene-diene block copolymer comprises blending together a bitumen, a styrene diene block co polyiner followed by a controlled amount oficross-linking agents
oss-linking agents for the diene phaserand heating and mixing the blend until the diene phase is partially cross linked.
The bitumen is preferably a straight run bitumen having a penetration value as determined by the standard test method
ASTM D5 of from 50 to 450 and more preferably from 100 to 250.
Styrene-diene block copolymers are known and any of these copolymers may be used in the process according to the present invention. The copolymers are block copolymers comprising styrene groups and conjugated diene groups. The conjugated diene groups may be, for example, butadiene or isoprene groups. Preferably the styrene-diene copolymer is a block copolymer comprising styrene groups and butadiene groups. The styrene-diene copolymer preferably has a mean modecular weight of 140,000.The amount of styrene-diene copolymer included in the composition according to the present invention is preferably from 2 to 20 and more preferably 5 to 15 parts by weight per 100 parts of the combined weight of the bitumen.
it
Curing agents for dienes are known and any of these may be used in the process according to the present invention. ror a a example, a curing system for use in the present invention may
zinc oxide stearic acid, and sulphur. Thetcuring system may also comprise suitable accelerators such as, for example, tetramethyl thiuram disulphide and Vanax OBTS 90. Compositions which are to be used as adhesives may also contain tackifying resins.
The process according to the present invention may be carried out using conventional inline blending equipment. The bitumen, and styrene-diene block copolymers are first blended together to form a homogeneous mixture. The diene phase is then dynamically 11 partially cross-linked by the addition of the curing agents and subsequently mixing the blend at a temperature above the activation temperature of the curing system.
The present invention includes the bitumen-polymer compositions obtainable by the process according to the present invention.
The compositions are particularly suitable for use as pressure sensitive adhesives.
Accordingly the present invention provides an adhesive composition suitable for use on self-adhesive waterproof membranes consisting of a sheet-like substrate and contiguous thereto a coating of pressure sensitive adhesive composition.
The adhesive composition is protected by a release film i.e.
siliconised paper.
The compositions remain tacky over a relatively wide temperature range e.g. from 00C-600C.
The compositions have an improved co-hesive strength, low temperature flexibility down to -200C and resistance to flow at 800C.
The compositions retain their thermoplastic characteristics.
The invention is illustrated with reference to the following example.
Example t 4000 kilograms of straight run bitumen having a penetration value of 200 were added to a reaction vessel fitted with a propeller stirrer and a high shear inline blender. The contents of the vessel were heated to 1600C-1800C. 40.4 kilograms of a tackifier, a tall oil residue sold under the trade name Unitol P by Union
Corp. UK Ltd, were added. 351.3 kilograms of a radial styrene butadiene block copolymer sold under the trade name Finaprene 411 by Fina Chemicals Ltd were added to the reaction vessel and thoroughly dispersed at 1600C-1800C utilising both stirrer and blender.
After mixing the composition for 1-2 hours the curing system was added.
The curing system comprised 3.95 kilograme of sulphur, 3.95 kilogrames of stearic acid, 3.95 kilograms of zinc oxide, 0.395 kilograms of tetramethyl thiuram disulphide and 0.88 kilograms of Vanax OBTS 90 which is a mixture of 2 morpholinothio benzothiazole (90t) and di-benzothiazyl - 2 - disulphide sold by Vanderbilt Ltd, USA.
The temperature of the reactor was maintained at 1500C-1600C for 1 hr.
with continuous stirring of the mixture.
The bitumen polymer composition prepared according to the process of the present invention had a ring and ball softening point of 1090C, a penetration at 250C of 116, a viscosity at 1500C of 6.3 poise, a viscosity at 1750C of 3.5 poise, a viscosity at 2000C of 2.2 poise.
The composition exhibited good tack at OOC.
The composition exhibited nil slump at 80 C.
The composition exhibited flexibility down to -200C.
The composition exhibited release at 80 C from a standard silicone release paper generally used for bitumen-polymer laminate compositions.
A sample of the composition was maintained at a temperature of 1650C for 2 weeks. There was no substantial change in physical properties.
Claims (7)
1. A process for producing a bitumen polymer adhesive composttion
and to the compositions obtainable by the process.
2. An adhesive composition which comprises:
50-98% by weight of bitumen
2-20% by weight Styrene Butadiene block copolymer
0-10% by weight Tackyfing Agent 0-0.1 % by weight Cross Linking Agent (sulphur)
0-0.1% by weight additive (stearic acid) 0-0.1% by weight additive yinc oxide)
0-0.05% by weight accelerators (tetra-methyl thiuram
disulphide and VANAX OBTS 90)
3. An adhesive composition according to Claim 1 and 2 wherein
the block copolymer comprises styrene groups and conjugated
diene groups.
4. An adhesive composition accbrding to Claim 1 and 2 wherein
the cross linking system used is established as a cross linking
agent for polyalkadienes.
5. An adhesive composition substantially as described in Example I.
6. A waterproof membrane comprising a flexible backing and a
layer of adhesive composition according to Claims 1 and 2.
7. A composite måterial comprising a layer of the adhesive
composition claimed in 1 and 2 between two sheets of release
paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9519736A GB2305667A (en) | 1995-09-27 | 1995-09-27 | Bitumen-polymer compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9519736A GB2305667A (en) | 1995-09-27 | 1995-09-27 | Bitumen-polymer compositions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9519736D0 GB9519736D0 (en) | 1995-11-29 |
| GB2305667A true GB2305667A (en) | 1997-04-16 |
Family
ID=10781378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9519736A Withdrawn GB2305667A (en) | 1995-09-27 | 1995-09-27 | Bitumen-polymer compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2305667A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19755224A1 (en) * | 1997-12-12 | 1999-06-17 | Cww Gerko Akustik Gmbh & Co Kg | Adhesive composition containing brominated polystyrene or red phosphorous, used for e.g. roofing panels |
| EP1035269A2 (en) * | 1999-03-05 | 2000-09-13 | Premier Coatings Limited | Composite membrane |
| EP1065249A1 (en) * | 1999-06-18 | 2001-01-03 | G. Grisard Ag | Bitumen Composition |
| WO2003066739A1 (en) * | 2002-02-07 | 2003-08-14 | Kraton Polymers Research B.V. | Polymer modified bitumen compositions |
| CN103525107A (en) * | 2013-10-22 | 2014-01-22 | 山西省交通科学研究院 | Preparation method of stable SBS (Styrene Butadiene Styrene) modified asphalt |
| WO2015134889A1 (en) * | 2014-03-07 | 2015-09-11 | Firestone Building Products Co., LLC | Roofing membranes with pre-applied, cured, pressure-sensitive seam adhesives |
| US10132082B2 (en) | 2013-09-18 | 2018-11-20 | Firestone Building Products Co., LLC | Peel and stick roofing membranes with cured pressure-sensitive adhesives |
| US11624189B2 (en) | 2016-03-25 | 2023-04-11 | Holcim Technology Ltd | Fully-adhered roof system adhered and seamed with a common adhesive |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1143895A (en) * | 1967-02-10 | |||
| GB1481506A (en) * | 1976-03-30 | 1977-08-03 | Shell Int Research | Articles having a pressure-sensitive layer |
| GB1493951A (en) * | 1973-11-14 | 1977-12-07 | Uniroyal Ltd | Thermoplastic elastomeric blend of rubber and bituminous material |
| GB1548451A (en) * | 1975-06-19 | 1979-07-18 | Sick Optik Elektronik Erwin | Process for the formation of a reference square wave s signal in line follower apparatus |
| GB2038848A (en) * | 1978-11-09 | 1980-07-30 | Elf Union | A process for preparing bitumen polymer compounds |
| GB2164344A (en) * | 1984-09-12 | 1986-03-19 | Exxon France | Bituminous compositions and preparation thereof |
| US5382612A (en) * | 1990-07-20 | 1995-01-17 | Elf France | Process for preparing in aqueous emulsion a bitumen/polymer binder with continuous three-dimensional polymeric structure and application of this binder to the production of facings or bituminous mixes |
-
1995
- 1995-09-27 GB GB9519736A patent/GB2305667A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1143895A (en) * | 1967-02-10 | |||
| GB1493951A (en) * | 1973-11-14 | 1977-12-07 | Uniroyal Ltd | Thermoplastic elastomeric blend of rubber and bituminous material |
| GB1548451A (en) * | 1975-06-19 | 1979-07-18 | Sick Optik Elektronik Erwin | Process for the formation of a reference square wave s signal in line follower apparatus |
| GB1481506A (en) * | 1976-03-30 | 1977-08-03 | Shell Int Research | Articles having a pressure-sensitive layer |
| GB2038848A (en) * | 1978-11-09 | 1980-07-30 | Elf Union | A process for preparing bitumen polymer compounds |
| GB2164344A (en) * | 1984-09-12 | 1986-03-19 | Exxon France | Bituminous compositions and preparation thereof |
| US5382612A (en) * | 1990-07-20 | 1995-01-17 | Elf France | Process for preparing in aqueous emulsion a bitumen/polymer binder with continuous three-dimensional polymeric structure and application of this binder to the production of facings or bituminous mixes |
Non-Patent Citations (1)
| Title |
|---|
| WPI Abstract Accession No. 80-22273C/13 & DE 2840599 A * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19755224A1 (en) * | 1997-12-12 | 1999-06-17 | Cww Gerko Akustik Gmbh & Co Kg | Adhesive composition containing brominated polystyrene or red phosphorous, used for e.g. roofing panels |
| EP1035269A2 (en) * | 1999-03-05 | 2000-09-13 | Premier Coatings Limited | Composite membrane |
| EP1035269A3 (en) * | 1999-03-05 | 2002-03-20 | Premier Coatings Limited | Composite membrane |
| EP1065249A1 (en) * | 1999-06-18 | 2001-01-03 | G. Grisard Ag | Bitumen Composition |
| WO2003066739A1 (en) * | 2002-02-07 | 2003-08-14 | Kraton Polymers Research B.V. | Polymer modified bitumen compositions |
| US10132082B2 (en) | 2013-09-18 | 2018-11-20 | Firestone Building Products Co., LLC | Peel and stick roofing membranes with cured pressure-sensitive adhesives |
| US10370854B2 (en) | 2013-09-18 | 2019-08-06 | Firestone Building Products Company, Llc | Peel and stick roofing membranes with cured pressure-sensitive adhesives |
| US10519663B2 (en) | 2013-09-18 | 2019-12-31 | Firestone Building Products Company, Llc | Peel and stick roofing membranes with cured pressure-sensitive adhesives |
| CN103525107A (en) * | 2013-10-22 | 2014-01-22 | 山西省交通科学研究院 | Preparation method of stable SBS (Styrene Butadiene Styrene) modified asphalt |
| WO2015134889A1 (en) * | 2014-03-07 | 2015-09-11 | Firestone Building Products Co., LLC | Roofing membranes with pre-applied, cured, pressure-sensitive seam adhesives |
| US10065394B2 (en) | 2014-03-07 | 2018-09-04 | Firestone Building Products Co., LLC | Roofing membranes with pre-applied, cured, pressure-sensitive seam adhesives |
| US11624189B2 (en) | 2016-03-25 | 2023-04-11 | Holcim Technology Ltd | Fully-adhered roof system adhered and seamed with a common adhesive |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9519736D0 (en) | 1995-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |