The present invention relates to an aircraft tire, the tread of which comprises a rubber composition based on at least one first diene elastomer, a reinforcing filler and a crosslinking system, which first diene elastomer comprises ethylene units and diene units comprising a carbon-carbon double bond, which units are distributed randomly within the first diene elastomer, the ethylene units representing at least 50 mol % of the combined monomer units of the first diene elastomer. Such a tire exhibits a performance on landing which is greatly improved, in particular with regard to the wear resistance at very high speeds.

A method of crosslinking a polyolefin resin with a silyl hydride crosslinking agent is disclosed. Crosslinkable compositions containing a polyolefin resin having about 0.9% to about 10% diene groups and a silyl hydride crosslinking agent are also disclosed.

A method of crosslinking a polyolefin resin with a silyl hydride crosslinking agent is disclosed. Crosslinkable compositions containing a polyolefin resin having about 0.9% to about 10% diene groups and a silyl hydride crosslinking agent are also disclosed.

A heterogeneous in-situ polymer blend comprising a continuous phase comprising a polypropylene having a crystallinity of at least 30% and a melting point temperature T.sub.m greater than 130 C., and a heat of fusion H.sub.f greater than 65 J/g; and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron, the elastomeric copolymer comprising ethylene units and 0.001 to 5 wt % diene by weight of the copolymer, and having a crystallinity of less than 20% and being at least partially cross-linked such that the degree of cross-link is at least 20%.

A heterogeneous in-situ polymer blend comprising a continuous phase comprising a polypropylene having a crystallinity of at least 30% and a melting point temperature T.sub.m greater than 130 C., and a heat of fusion H.sub.f greater than 65 J/g; and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron, the elastomeric copolymer comprising ethylene units and 0.001 to 5 wt % diene by weight of the copolymer, and having a crystallinity of less than 20% and being at least partially cross-linked such that the degree of cross-link is at least 20%.

The present invention relates to novel polymer compositions, particularly in the form of thermoplastic Vulcanisates, said compositions comprising the reaction product of a first polymer (rubber phase); a second polymer (thermoplastic phase); a carboxylic acid anhydride; either a vinylsilane in combination with a peroxide or a sulphursilane; and whereby said silane is allowed to react with the polymers first. The invention further provides for processes of manufacturing such compositions and for articles comprising such compositions.

The present invention relates to novel polymer compositions, particularly in the form of thermoplastic Vulcanisates, said compositions comprising the reaction product of a first polymer (rubber phase); a second polymer (thermoplastic phase); a carboxylic acid anhydride; either a vinylsilane in combination with a peroxide or a sulphursilane; and whereby said silane is allowed to react with the polymers first. The invention further provides for processes of manufacturing such compositions and for articles comprising such compositions.

The present invention relates to a branched modifier and a composition comprising more than 25 wt % (based on the weight of the composition) of one or more linear ethylene polymers having a g.sub.vis of 0.97 or more and an M.sub.w of 20,000 g/mol or more and at least 0.1 wt % of a branched modifier where the modifier has a g.sub.vis of less than 0.97, wherein the ethylene polymer has a g.sub.vis of at least 0.01 units higher than the g.sub.vis of the branched modifier.

Described herein are thermoplastic vulcanizates comprising thermoplastic resin, an at least partially vulcanized rubber dispersed in the thermoplastic resin, and process oil. The process oil in the thermoplastic vulcanizate may be selected from extension oil, free oil, curative-in-oil, and/or combination thereof. At least a portion of the process oil in the thermoplastic vulcanizate is a low aromatic/sulfur content oil and has an aromatic content of less than 5 wt %, and a sulfur content of less than 0.03 wt %, based on the weight of that portion of the process oil. The thermoplastic vulcanizate exhibits improved gravimetric fogging properties.

A cyclic olefin-based resin composition contains a cyclic olefin-based copolymer (A), an azo compound (B) which has an azo group in a molecule and includes no heteroatom other than a nitrogen atom constituting the azo group, and a hindered phenol compound (C), in which an iodine value of the cyclic olefin-based copolymer (A) is in a range of equal to or more than 20 g/100 g and equal to or less than 120 g/100 g, and a number-average molecular weight Mn of the cyclic olefin-based copolymer (A) is in a range of equal to or more than 3,000 and equal to or less than 30,000.