IT1230723B - Modified asphalt prepn. having improved penetration resistance - Google Patents
Modified asphalt prepn. having improved penetration resistanceInfo
- Publication number
- IT1230723B IT1230723B IT8919443A IT1944389A IT1230723B IT 1230723 B IT1230723 B IT 1230723B IT 8919443 A IT8919443 A IT 8919443A IT 1944389 A IT1944389 A IT 1944389A IT 1230723 B IT1230723 B IT 1230723B
- Authority
- IT
- Italy
- Prior art keywords
- vinyl acetate
- prepn
- asphalt
- modified asphalt
- penetration resistance
- Prior art date
Links
- 239000010426 asphalt Substances 0.000 title abstract 4
- 230000035515 penetration Effects 0.000 title 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 abstract 3
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 239000003607 modifier Substances 0.000 abstract 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A process for modifying asphalt comprises mixing with asphalt, either as such or in aq. bituminous emulsion, 2.5-7.5 wt.% of a medium viscosity ethylene vinyl acetate (VA) polymer (I) having a melt index of 700-10,000 and contg. 5-40 wt.% pref. 11-40 wt.% of vinyl acetate. (I) has 0-10 alkyl-branches/1,000 backbone C atoms. The asphalt has a ring and ball softening point of more than 70 deg.C. (I) pref. contains 11-20 wt.% of vinyl acetate and is prepd. using a non-incorporating modifier. (I) has a density of more than 0.935 g/ml; a tensile strength at break of more than 5 MPa; a 1% secant modulus of more than 90 MPa; and/or Shore A hardness of more than 90.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB888803455A GB8803455D0 (en) | 1988-02-15 | 1988-02-15 | Asphalt modifiers processes for modifying asphalts & modified asphalts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8919443A0 IT8919443A0 (en) | 1989-02-15 |
| IT1230723B true IT1230723B (en) | 1991-10-29 |
Family
ID=10631728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT8919443A IT1230723B (en) | 1988-02-15 | 1989-02-15 | Modified asphalt prepn. having improved penetration resistance |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU2995689A (en) |
| ES (1) | ES2010866A6 (en) |
| GB (1) | GB8803455D0 (en) |
| IT (1) | IT1230723B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2153251B1 (en) * | 1997-08-04 | 2001-09-01 | Ditecpesa S A | MANUFACTURING PROCEDURE OF A NEW EVA TYPE POLYMER, PRODUCT SO OBTAINED AND ITS APPLICATIONS. |
-
1988
- 1988-02-15 GB GB888803455A patent/GB8803455D0/en active Pending
-
1989
- 1989-02-14 ES ES8900515A patent/ES2010866A6/en not_active Expired
- 1989-02-14 AU AU29956/89A patent/AU2995689A/en not_active Abandoned
- 1989-02-15 IT IT8919443A patent/IT1230723B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| GB8803455D0 (en) | 1988-03-16 |
| AU2995689A (en) | 1989-08-17 |
| ES2010866A6 (en) | 1989-12-01 |
| IT8919443A0 (en) | 1989-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19990129 |