发明名称 |
METHOD FOR PREPARING REINFORCED MULTIGRADE BITUMEN/POLYMER COMPOSITIONS, AND USE OF THE RESULTING COMPOSITIONS FOR PRODUCING BITUMEN/POLYMER BINDERS FOR SURFACE COATINGS |
摘要 |
Bitumen/polymer compositions with a broadened plasticity range are produced by contacting a bitumen or bitumen mixture with a sulphur-cross-linkable elastomer and a sulphur-donating coupling agent, at 100-230 DEG C and under stirring conditions, to produce a cross-linked bitumen/polymer composition, then adding to the composition, maintained at 100-230 DEG C and under stirring conditions, an acidic additive selected from polyphosphoric acids, acids of formula R-(COO)t-SO3H, wherein t = 0 or 1 and R is a monovalent hydrocarbyl radical having up to 12 carbon atoms, and mixtures of both types of acid separately or jointly with sulphuric acid, and maintaining the resulting reaction medium at 100-230 DEG C and under stirring conditions for at least ten minutes. Said bitumen/polymer compositions may be used directly or in diluted form to produce bituminous binders for making road surfaces, coated materials or sealing coatings. |
申请公布号 |
WO9714753(A1) |
申请公布日期 |
1997.04.24 |
申请号 |
WO1996FR01605 |
申请日期 |
1996.10.15 |
申请人 |
ELF ANTAR FRANCE;PLANCHE, JEAN-PASCAL;TURELLO, PATRICK |
发明人 |
PLANCHE, JEAN-PASCAL;TURELLO, PATRICK |
分类号 |
C08J3/24;C08K3/06;C08K3/24;C08K3/30;C08K3/32;C08K5/42;C08K13/02;C08L53/02;C08L95/00 |
主分类号 |
C08J3/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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