GB2305667A - Bitumen-polymer compositions - Google Patents

Bitumen-polymer compositions Download PDF

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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
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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Withdrawn
Application number
GB9519736A
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GB9519736D0 (en
Inventor
Lawrence Lester
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Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9519736A priority Critical patent/GB2305667A/en
Publication of GB9519736D0 publication Critical patent/GB9519736D0/en
Publication of GB2305667A publication Critical patent/GB2305667A/en
Withdrawn legal-status Critical Current

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    • 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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

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.
GB9519736A 1995-09-27 1995-09-27 Bitumen-polymer compositions Withdrawn GB2305667A (en)

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 (9)

* Cited by examiner, † Cited by third party
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
US12006692B2 (en) 2016-03-25 2024-06-11 Holcim Technology Ltd Fully-adhered roof system adhered and seamed with a common adhesive

Citations (7)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Title
WPI Abstract Accession No. 80-22273C/13 & DE 2840599 A *

Cited By (13)

* Cited by examiner, † Cited by third party
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
US10370854B2 (en) 2013-09-18 2019-08-06 Firestone Building Products Company, Llc Peel and stick roofing membranes with cured pressure-sensitive adhesives
US10132082B2 (en) 2013-09-18 2018-11-20 Firestone Building Products Co., 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
US12006692B2 (en) 2016-03-25 2024-06-11 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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