Abstract: A method of preparing a diluted chain extended organopolysiloxane containing polymer comprising the steps of reacting a pre-formed polymer with a suitable chain extender reactable with terminal groups of the polymer in the presence of a diluent material, a suitable catalyst and optionally an end-blocking agent; and Where required quenching the polymerization process wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane containing polymer. The case additionally relates to products of the process and subsequent applications for the polymer such as for example sealants and rubbers.

Abstract: A moisture curable composition is capable of cure to an elastomeric body. The composition includes an extended polymer, a suitable cross-linking agent, a suitable condensation catalyst, an organic plasticizer, and one or more fillers. The extended polymer includes an organosiloxane containing polymer of a specific formula and an organic extender selected from linear or branched mono unsaturated hydrocarbons, wherein the organopolysiloxane polymer comprises from 5 to 20% by weight of the composition. The cross-linking agent includes at least two hydroxyl and/or hydrolysable groups reactive with the organopolysiloxane polymer. The organic plasticizer is selected from one or more of the group of natural drying oils, fatty acid(s), fatty acid esters, polyols, and organic phosphates.

Abstract: A method of preparing a diluted chain extended organopolysiloxane containing polymer comprising the steps of reacting a pre-formed polymer with a suitable chain extender reactable with terminal groups of the polymer in the presence of a diluent material, a suitable catalyst and optionally an end-blocking agent; and Where required quenching the polymerisation process wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane containing polymer. The case additionally relates to products of the process and subsequent applications for the polymer such as for example sealants and rubbers.

Abstract: A moisture curable composition capable of cure to an elastomeric body comprising (a) a diluted polymer comprising (i) a silicon containing polymer of the formula X-A-X1 where X and X1 are independently selected from silyl groups which contain one or more condensable substituents per group and A is a polymeric chain having a number average molecular weight (Mn) of at least 132 000; and a degree of polymerization of at least 1800. (ii) an organic extender and/or plasticizer which diluted polymer is obtained by polymerization in the presence of the said organic extender and/or plasticizer (b) a suitable cross-linking agent which comprises at least two groups which are reactable with the condensable groups in the diluted polymer, (c) a suitable condensation catalyst and optionally (e) one or more fillers.

Abstract: A method of making a diluted organopolysiloxane containing polymer comprising the steps of:— (i) Preparing an organopolysiloxane containing polymer by reacting a siloxane containing material with:— (a) one or more organopolysiloxane polymers(s) or (b) one or more organic polymers(s) via an addition reaction pathway in the presence of an extender and/or plasticiser, a suitable catalyst and optionally an end-blocking agent; and (iii) Where required quenching the polymerisation process; wherein the extender and/or plasticiser is substantially retained within the resulting diluted organopolysiloxane containing polymer.

Abstract: A method of making a diluted polysiloxane containing polymer comprising the steps of: i) Preparing a polysiloxane containing polymer by the polycondensation of siloxane containing monomers and/or oligomers which comprise condensable groups in the presence of an organopolysiloxane and/or an organic based diluent material, a suitable catalyst and optionally an end-blocking agent; and ii) Where required quenching the polymerization process; wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane.

Abstract: A method of preparing a diluted chain extended organopolysiloxane containing polymer comprising the steps of reacting a pre-formed polymer with a suitable chain extender reactable with terminal groups of the polymer in the presence of a diluent material, a suitable catalyst and optionally an end-blocking agent; and Where required quenching the polymerization process wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane containing polymer. The case additionally relates to products of the process and subsequent applications for the polymer such as for example sealants and rubbers.

Abstract: A method of making a diluted organopolysiloxane polymer comprising the steps of:— (i) preparing an organopolysiloxane polymer by polymerizing cyclic organopolysiloxane monomer(s) in the presence of an organic diluent material, a suitable catalyst and an end-blocking agent; and (ii) Where required quenching the polymerization process; wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane.

Abstract: A moisture curable composition capable of cure to an elastomeric body comprising (a) a diluted polymer comprising (i) a silicon containing polymer of the formula X-A-X1 where X and X1 are independently selected from silyl groups which contain one or more condensable substituents per group and A is a polymeric chain having a number average molecular weight (Mn) of at least 132 000; and a degree of polymerisation of at least 1800. (ii) an organic extender and/or plasticiser which diluted polymer is obtained by polymerisation in the presence of the said organic extender and/or plasticiser (b) a suitable cross-linking agent which comprises at least two groups which are reactable with the condensable groups in the diluted polymer, (c) a suitable condensation catalyst and optionally (e) one or more fillers.

Abstract: A moisture curable composition capable of cure to an elastomeric body comprising (a) a diluted polymer comprising (i) a silicon containing polymer of the formula X-A-X1 where X and X1 are independently selected from silyl groups which contain one or more condensable substituents per group and A is a polymeric chain having a number average molecular weight (Mn) of at least 132 000; and a degree of polymerisation of at least 1800. (ii) an organic extender and/or plasticiser which diluted polymer is obtained by polymerisation in the presence of the said organic extender and/or plasticiser (b) a suitable cross-linking agent which comprises at least two groups which are reactable with the condensable groups in the diluted polymer, (c) a suitable condensation catalyst and optionally (e) one or more fillers.

Abstract: A coatable sealant composition comprising a moisture curable composition capable of cure to an elastomeric body comprising (a) an extended polymer comprising (i) an organosiloxane polymer of the formula X-A-X1 where X and X1 are independently selected from silyl groups containing hydroxyl or hydrolysable groups selected from —SiOH3, —(Ra)SiOH2, —(Ra)2SiOH, —RaSi(ORb)2, —Si(ORb)3, —Ra2SiORb and —Ra2Si —Rc—SiRdp(ORb)3?p where each Ra independently represents a monovalent hydrocarbyl group, each Rb and Rd group is independently an alkyl or alkoxy group in which the alkyl groups suitably have up to 6 carbon atoms; Rc is a divalent hydrocarbon group which may be interrupted by one or more siloxane spacers having up to six silicon atoms; and p has the value 0, 1 or 2; and A is an organopolysiloxane containing molecular chain; and (ii) an organic extender (b) a suitable cross-linking agent which has at least two hydroxyl and/or hydrolysable groups reactive with the organopolysiloxane polymer, (c)

Abstract: A method of making a diluted polysiloxane containing polymer comprising the steps of:— i) Preparing a polysiloxane containing polymer by the polycondensation of siloxane containing monomers and/or oligomers which comprise condensable groups in the presence of an organopolysiloxane and/or an organic based diluent material, a suitable catalyst and optionally an end-blocking agent; and ii) Where required quenching the polymerisation process; wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane.

Abstract: A method of making a diluted organopolysiloxane containing polymer comprising the steps of:— (i) Preparing an organopolysiloxane containing polymer by reacting a siloxane containing material with:— (a) one or more organopolysiloxane polymers(s) or (b) one or more organic polymers(s) via an addition reaction pathway in the presence of an extender and/or plasticiser, a suitable catalyst and optionally an end-blocking agent; and (iii) Where required quenching the polymerisation process; wherein the extender and/or plasticiser is substantially retained within the resulting diluted organopolysiloxane containing polymer.

Abstract: A method of preparing a diluted chain extended organopolysiloxane containing polymer comprising the steps of reacting a pre-formed polymer with a suitable chain extender reactable with terminal groups of the polymer in the presence of a diluent material, a suitable catalyst and optionally an end-blocking agent; and Where required quenching the polymerisation process wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane containing polymer. The case additionally relates to products of the process and subsequent applications for the polymer such as for example sealants and rubbers.

Abstract: A method of making a diluted organopolysiloxane polymer comprising the steps of:— (i) preparing an organopolysiloxane polymer by polymerising cyclic organopolysiloxane monomer(s) in the presence of an organic diluent material, a suitable catalyst and an end-blocking agent; and (ii) Where required quenching the polymerisation process; wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane.

Abstract: A moisture curable composition capable of cure to an elastomeric body comprising (a) a diluted polymer comprising (i) a silicon containing polymer of the formula X-A-X1 where X and X1 are independently selected from silyl groups which contain one or more condensable substituents per group and A is a polymeric chain having a number average molecular weight (Mn) of at least 132 000; and a degree of polymerisation of at least 1800. (ii) an organic extender and/or plasticiser ?which diluted polymer is obtained by polymerisation in the presence of the said organic extender and/or plasticiser (b) a suitable cross-linking agent which comprises at least two groups which are reactable with the condensable groups in the diluted polymer, (c) a suitable condensation catalyst and optionally (e) one or more fillers.